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Current File : C:/Program Files (x86)/Mail Enable/Bin/NETWebAdmin/Mondo/lang/sys/scripts/jquery.layout.min.js
/**
 * @preserve
 * jquery.layout 1.8.5
 * $Date: 2020-08-22 $
 * $Rev: 1.8.5 $
 *
 * Copyright (c) 2014 Kevin Dalman (http://jquery-dev.com)
 * Based on work by Fabrizio Balliano (http://www.fabrizioballiano.net)
 *
 * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
 * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
 *
 * SEE: http://layout.jquery-dev.com/LICENSE.txt
 *
 * Changelog: http://layout.jquery-dev.com/changelog.cfm
 *
 * Docs: http://layout.jquery-dev.com/documentation.html
 * Tips: http://layout.jquery-dev.com/tips.html
 * Help: http://groups.google.com/group/jquery-ui-layout
 *
 * History
 * 2016/28/10 - Added responsiveness - marc magon
 * 2018/01/27 - Updated the toggler class and responsive properties
 * 2018/04/02 - Switch unbinds to .off() as recommended
 *
 * 2019/02/09 - @rsprinkle      Add AMD Support,
 *              @alexsielicki   Fixing issue with running under webpack with jQuery 3.3.1 and jQuery Migrate plugin
 *
 * 2019/03/25 - @rsprinkle      AMD Support - Return JQuery
 */

/* JavaDoc Info: http://code.google.com/closure/compiler/docs/js-for-compiler.html
 * {!Object} non-nullable type (never NULL)
 * {?string} nullable type (sometimes NULL) - default for {Object}
 * {number=} optional parameter
 * {*}   ALL types
 */
// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars
(function (factory)
{
    if (typeof define === 'function' && define.amd)
    {
        // AMD. Register as anonymous module.
        define(['jquery'], factory);
    }
    else
    {
        // Browser globals.
        factory(jQuery);
    }
}(function(jQuery)
{
    (function ($) {
// alias Math methods - used a lot!
            var min = Math.min, max = Math.max, round = Math.floor, isStr = function (v) {
                    return typeof(v) === "string";
                }

                /**
                 * @param {!Object}   Instance
                 * @param {Array.<string>} a_fn
                 */
                , runPluginCallbacks = function (Instance, a_fn) {
                    if (Array.isArray(a_fn))
                        for (var i = 0, c = a_fn.length; i < c; i++) {
                            var fn = a_fn[i];
                            try {
                                if (isStr(fn)) // 'name' of a function
                                    fn = eval(fn);
                                if (typeof fn === "function")
                                    g(fn)(Instance);
                            } catch (ex) {
                            }
                        }

                    function g(f) {
                        return f;
                    }

                    // compiler hack
                }
            ;

            /*
     * GENERIC $.layout METHODS - used by all layouts
     */
            $.layout = {
                version: "1.8.4"
                , revision: 1.8004 // eg: ver 1.4.4 = rev 1.0404 - major(n+).minor(nn)+patch(nn+)

                // $.layout.browser REPLACES $.browser
                , browser: {} // set below

                // *PREDEFINED* EFFECTS & DEFAULTS
                // MUST list effect here - OR MUST set an fxSettings option (can be an empty hash: {})
                , effects: {
                    // Pane Open/Close Animations
                    slide: {
                        all: {duration: "fast"} // eg: duration: 1000, easing: "easeOutBounce"
                        , north: {direction: "up"}
                        , south: {direction: "down"}
                        , east: {direction: "right"}
                        , west: {direction: "left"}
                    }
                    , drop: {
                        all: {duration: "slow"}
                        , north: {direction: "up"}
                        , south: {direction: "down"}
                        , east: {direction: "right"}
                        , west: {direction: "left"}
                    }
                    , scale: {
                        all: {duration: "fast"}
                    }
                    // these are not recommended, but can be used
                    , blind: {}
                    , clip: {}
                    , explode: {}
                    , fade: {}
                    , fold: {}
                    , puff: {}

                    // Pane Resize Animations
                    , size: {
                        all: {easing: "swing"}
                    }
                }

                // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
                , config: {
                    optionRootKeys: "effects,panes,north,south,west,east,center".split(",")
                    , allPanes: "north,south,west,east,center".split(",")
                    , borderPanes: "north,south,west,east".split(",")
                    , oppositeEdge: {
                        north: "south"
                        , south: "north"
                        , east: "west"
                        , west: "east"
                    }
                    // offscreen data
                    , offscreenCSS: {left: "-99999px", right: "auto"} // used by hide/close if useOffscreenClose=true
                    , offscreenReset: "offscreenReset" // key used for data
                    // CSS used in multiple places
                    , hidden: {visibility: "hidden"}
                    , visible: {visibility: "visible"}
                    // layout element settings
                    , resizers: {
                        cssReq: {
                            position: "absolute"
                            , padding: 0
                            , margin: 0
                            , fontSize: "1px"
                            , textAlign: "left" // to counter-act "center" alignment!
                            , overflow: "hidden" // prevent toggler-button from overflowing
                            // SEE $.layout.defaults.zIndexes.resizer_normal
                        }
                        , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                            background: "#DDD"
                            , border: "none"
                        }
                    }
                    , togglers: {
                        cssReq: {
                            position: "absolute"
                            , display: "block"
                            , padding: 0
                            , margin: 0
                            , overflow: "hidden"
                            , textAlign: "center"
                            , fontSize: "1px"
                            , cursor: "pointer"
                            , zIndex: 1
                        }
                        , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                            background: "#AAA"
                        }
                    }
                    , content: {
                        cssReq: {
                            position: "relative" /* contain floated or positioned elements */
                        }
                        , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                            overflow: "auto"
                            , padding: "10px"
                        }
                        , cssDemoPane: {// DEMO CSS - REMOVE scrolling from 'pane' when it has a content-div
                            overflow: "hidden"
                            , padding: 0
                        }
                    }
                    , panes: {// defaults for ALL panes - overridden by 'per-pane settings' below
                        cssReq: {
                            position: "absolute"
                            , margin: 0
                            // $.layout.defaults.zIndexes.pane_normal
                        }
                        , cssDemo: {// DEMO CSS - applied if: options.PANE.applyDemoStyles=true
                            padding: "10px"
                            , background: "#FFF"
                            , border: "1px solid #BBB"
                            , overflow: "auto"
                        }
                    }
                    , north: {
                        side: "top"
                        , sizeType: "Height"
                        , dir: "horz"
                        , cssReq: {
                            top: 0
                            , bottom: "auto"
                            , left: 0
                            , right: 0
                            , width: "auto"
                            // height:  DYNAMIC
                        }
                    }
                    , south: {
                        side: "bottom"
                        , sizeType: "Height"
                        , dir: "horz"
                        , cssReq: {
                            top: "auto"
                            , bottom: 0
                            , left: 0
                            , right: 0
                            , width: "auto"
                            // height:  DYNAMIC
                        }
                    }
                    , east: {
                        side: "right"
                        , sizeType: "Width"
                        , dir: "vert"
                        , cssReq: {
                            left: "auto"
                            , right: 0
                            , top: "auto" // DYNAMIC
                            , bottom: "auto" // DYNAMIC
                            , height: "auto"
                            // width:   DYNAMIC
                        }
                    }
                    , west: {
                        side: "left"
                        , sizeType: "Width"
                        , dir: "vert"
                        , cssReq: {
                            left: 0
                            , right: "auto"
                            , top: "auto" // DYNAMIC
                            , bottom: "auto" // DYNAMIC
                            , height: "auto"
                            // width:   DYNAMIC
                        }
                    }
                    , center: {
                        dir: "center"
                        , cssReq: {
                            left: "auto" // DYNAMIC
                            , right: "auto" // DYNAMIC
                            , top: "auto" // DYNAMIC
                            , bottom: "auto" // DYNAMIC
                            , height: "auto"
                            , width: "auto"
                        }
                    }
                }

                // CALLBACK FUNCTION NAMESPACE - used to store reusable callback functions
                , callbacks: {}

                , getParentPaneElem: function (el) {
                    // must pass either a container or pane element
                    var $el = $(el)
                        , layout = $el.data("layout") || $el.data("parentLayout");
                    if (layout) {
                        var $cont = layout.container;
                        // see if this container is directly-nested inside an outer-pane
                        if ($cont.data("layoutPane"))
                            return $cont;
                        var $pane = $cont.closest("." + $.layout.defaults.panes.paneClass);
                        // if a pane was found, return it
                        if ($pane.data("layoutPane"))
                            return $pane;
                    }
                    return null;
                }

                , getParentPaneInstance: function (el) {
                    // must pass either a container or pane element
                    var $pane = $.layout.getParentPaneElem(el);
                    return $pane ? $pane.data("layoutPane") : null;
                }

                , getParentLayoutInstance: function (el) {
                    // must pass either a container or pane element
                    var $pane = $.layout.getParentPaneElem(el);
                    return $pane ? $pane.data("parentLayout") : null;
                }

                , getEventObject: function (evt) {
                    return typeof evt === "object" && evt.stopPropagation ? evt : null;
                }
                , parsePaneName: function (evt_or_pane) {
                    var evt = $.layout.getEventObject(evt_or_pane)
                        , pane = evt_or_pane;
                    if (evt) {
                        // ALWAYS stop propagation of events triggered in Layout!
                        evt.stopPropagation();
                        pane = $(this).data("layoutEdge");
                    }
                    if (pane && !/^(west|east|north|south|center)$/.test(pane)) {
                        $.layout.msg('LAYOUT ERROR - Invalid pane-name: "' + pane + '"');
                        pane = "error";
                    }
                    return pane;
                }


                // LAYOUT-PLUGIN REGISTRATION
                // more plugins can added beyond this default list
                , plugins: {
                    draggable: !!$.fn.draggable // resizing
                    , effects: {
                        core: !!$.effects  // animimations (specific effects tested by initOptions)
                        , slide: $.effects && ($.effects.slide || ($.effects.effect && $.effects.effect.slide)) // default effect
                    }
                }

// arrays of plugin or other methods to be triggered for events in *each layout* - will be passed 'Instance'
                , onCreate: [] // runs when layout is just starting to be created - right after options are set
                , onLoad: [] // runs after layout container and global events init, but before initPanes is called
                , onReady: [] // runs after initialization *completes* - ie, after initPanes completes successfully
                , onDestroy: [] // runs after layout is destroyed
                , onUnload: [] // runs after layout is destroyed OR when page unloads
                , afterOpen: [] // runs after setAsOpen() completes
                , afterClose: [] // runs after setAsClosed() completes

                /*
                 * GENERIC UTILITY METHODS
                 */

                // calculate and return the scrollbar width, as an integer
                , scrollbarWidth: function () {
                    return window.scrollbarWidth || $.layout.getScrollbarSize('width');
                }
                , scrollbarHeight: function () {
                    return window.scrollbarHeight || $.layout.getScrollbarSize('height');
                }
                , getScrollbarSize: function (dim) {
                    var $c = $('<div style="position: absolute; top: -10000px; left: -10000px; width: 100px; height: 100px; border: 0; overflow: scroll;"></div>').appendTo("body")
                        , d = {width: $c.outerWidth - $c[0].clientWidth, height: 100 - $c[0].clientHeight};
                    $c.remove();
                    window.scrollbarWidth = d.width;
                    window.scrollbarHeight = d.height;
                    return dim.match(/^(width|height)$/) ? d[dim] : d;
                }


                , disableTextSelection: function () {
                    var $d = $(document)
                        , s = 'textSelectionDisabled'
                        , x = 'textSelectionInitialized'
                    ;
                    if ($.fn.disableSelection) {
                        if (!$d.data(x)) // document hasn't been initialized yet
                            $d.on('mouseup', $.layout.enableTextSelection).data(x, true);
                        if (!$d.data(s))
                            $d.disableSelection().data(s, true);
                    }
                }
                , enableTextSelection: function () {
                    var $d = $(document)
                        , s = 'textSelectionDisabled';
                    if ($.fn.enableSelection && $d.data(s))
                        $d.enableSelection().data(s, false);
                }


                /**
                 * Returns hash container 'display' and 'visibility'
                 *
                 * @see $.swap() - swaps CSS, runs callback, resets CSS
                 * @param  {!Object}  $E    jQuery element
                 * @param  {boolean=} [force=false] Run even if display != none
                 * @return {!Object}      Returns current style props, if applicable
                 */
                , showInvisibly: function ($E, force) {
                    if ($E && $E.length && (force || $E.css("display") === "none")) { // only if not *already hidden*
                        var s = $E[0].style
                            // save ONLY the 'style' props because that is what we must restore
                            , CSS = {display: s.display || '', visibility: s.visibility || ''};
                        // show element 'invisibly' so can be measured
                        $E.css({display: "block", visibility: "hidden"});
                        return CSS;
                    }
                    return {};
                }

                /**
                 * Returns data for setting size of an element (container or a pane).
                 *
                 * @see  _create(), onWindowResize() for container, plus others for pane
                 * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, outerWidth, innerHeight, etc
                 */
                , getElementDimensions: function ($E, inset) {
                    var
                        // dimensions hash - start with current data IF passed
                        d = {css: {}, inset: {}}
                        , x = d.css   // CSS hash
                        , i = {bottom: 0} // TEMP insets (bottom = complier hack)
                        , N = $.layout.cssNum
                        , R = Math.round
                        , off = $E.offset()
                        , b, p, ei   // TEMP border, padding
                    ;
                    d.offsetLeft = off.left;
                    d.offsetTop = off.top;

                    if (!inset)
                        inset = {}; // simplify logic below

                    $.each("Left,Right,Top,Bottom".split(","), function (idx, e) { // e = edge
                        b = x["border" + e] = $.layout.borderWidth($E, e);
                        p = x["padding" + e] = $.layout.cssNum($E, "padding" + e);
                        ei = e.toLowerCase();
                        d.inset[ei] = inset[ei] >= 0 ? inset[ei] : p; // any missing insetX value = paddingX
                        i[ei] = d.inset[ei] + b; // total offset of content from outer side
                    });

                    x.width = R($E.width());
                    x.height = R($E.height());
                    x.top = N($E, "top", true);
                    x.bottom = N($E, "bottom", true);
                    x.left = N($E, "left", true);
                    x.right = N($E, "right", true);

                    d.outerWidth = R($E.outerWidth());
                    d.outerHeight = R($E.outerHeight());
                    // calc the TRUE inner-dimensions, even in quirks-mode!
                    d.innerWidth = max(0, d.outerWidth - i.left - i.right);
                    d.innerHeight = max(0, d.outerHeight - i.top - i.bottom);
                    // layoutWidth/Height is used in calcs for manual resizing
                    // layoutW/H only differs from innerW/H when in quirks-mode - then is like outerW/H
                    d.layoutWidth = R($E.innerWidth());
                    d.layoutHeight = R($E.innerHeight());

                    //if ($E.prop('tagName') === 'BODY') { debugData( d, $E.prop('tagName') ); } // DEBUG

                    //d.visible = $E.is(":visible");// && x.width > 0 && x.height > 0;

                    return d;
                }

                , getElementStyles: function ($E, list) {
                    var
                        CSS = {}
                        , style = $E[0].style
                        , props = list.split(",")
                        , sides = "Top,Bottom,Left,Right".split(",")
                        , attrs = "Color,Style,Width".split(",")
                        , p, s, a, i, j, k
                    ;
                    for (i = 0; i < props.length; i++) {
                        p = props[i];
                        if (p.match(/(border|padding|margin)$/))
                            for (j = 0; j < 4; j++) {
                                s = sides[j];
                                if (p === "border")
                                    for (k = 0; k < 3; k++) {
                                        a = attrs[k];
                                        CSS[p + s + a] = style[p + s + a];
                                    }
                                else
                                    CSS[p + s] = style[p + s];
                            }
                        else
                            CSS[p] = style[p];
                    }
                    return CSS
                }

                /**
                 * Return the innerWidth for the current browser/doctype
                 *
                 * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
                 * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
                 * @param  {number=}   outerWidth (optional) Can pass a width, allowing calculations BEFORE element is resized
                 * @return {number}   Returns the innerWidth of the elem by subtracting padding and borders
                 */
                , cssWidth: function ($E, outerWidth) {
                    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
                    if (outerWidth <= 0)
                        return 0;

                    var lb = $.layout.browser
                        , bs = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
                        , b = $.layout.borderWidth
                        , n = $.layout.cssNum
                        , W = outerWidth
                    ;
                    // strip border and/or padding from outerWidth to get CSS Width
                    if (bs !== "border-box")
                        W -= (b($E, "Left") + b($E, "Right"));
                    if (bs === "content-box")
                        W -= (n($E, "paddingLeft") + n($E, "paddingRight"));
                    return max(0, W);
                }

                /**
                 * Return the innerHeight for the current browser/doctype
                 *
                 * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
                 * @param  {Array.<Object>} $E  Must pass a jQuery object - first element is processed
                 * @param  {number=}   outerHeight  (optional) Can pass a width, allowing calculations BEFORE element is resized
                 * @return {number}   Returns the innerHeight of the elem by subtracting padding and borders
                 */
                , cssHeight: function ($E, outerHeight) {
                    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
                    if (outerHeight <= 0)
                        return 0;

                    var lb = $.layout.browser
                        , bs = !lb.boxModel ? "border-box" : lb.boxSizing ? $E.css("boxSizing") : "content-box"
                        , b = $.layout.borderWidth
                        , n = $.layout.cssNum
                        , H = outerHeight
                    ;
                    // strip border and/or padding from outerHeight to get CSS Height
                    if (bs !== "border-box")
                        H -= (b($E, "Top") + b($E, "Bottom"));
                    if (bs === "content-box")
                        H -= (n($E, "paddingTop") + n($E, "paddingBottom"));
                    return max(0, H);
                }

                /**
                 * Returns the 'current CSS numeric value' for a CSS property - 0 if property does not exist
                 *
                 * @see  Called by many methods
                 * @param {Array.<Object>} $E     Must pass a jQuery object - first element is processed
                 * @param {string}   prop    The name of the CSS property, eg: top, width, etc.
                 * @param {boolean=}   [allowAuto=false] true = return 'auto' if that is value; false = return 0
                 * @return {(string|number)}      Usually used to get an integer value for position (top, left) or size (height, width)
                 */
                , cssNum: function ($E, prop, allowAuto) {
                    if (!$E.jquery)
                        $E = $($E);
                    var CSS = $.layout.showInvisibly($E)
                        , p = $.css($E[0], prop, true)
                        , v = allowAuto && p == "auto" ? p : Math.round(parseFloat(p) || 0);
                    $E.css(CSS); // RESET
                    return v;
                }

                , borderWidth: function (el, side) {
                    if (el.jquery)
                        el = el[0];
                    var b = "border" + side.substr(0, 1).toUpperCase() + side.substr(1); // left => Left
                    return $.css(el, b + "Style", true) === "none" ? 0 : Math.round(parseFloat($.css(el, b + "Width", true)) || 0);
                }

                /**
                 * Mouse-tracking utility - FUTURE REFERENCE
                 *
                 * init: if (!window.mouse) {
                 *   window.mouse = { x: 0, y: 0 };
                 *   $(document).mousemove( $.layout.trackMouse );
                 *  }
                 *
                 * @param {Object}  evt
                 *
                 , trackMouse: function (evt) {
         window.mouse = { x: evt.clientX, y: evt.clientY };
         }
                 */

                /**
                 * SUBROUTINE for preventPrematureSlideClose option
                 *
                 * @param {Object}  evt
                 * @param {Object=}  el
                 */
                , isMouseOverElem: function (evt, el) {
                    var
                        $E = $(el || this)
                        , d = $E.offset()
                        , T = d.top
                        , L = d.left
                        , R = L + $E.outerWidth()
                        , B = T + $E.outerHeight()
                        , x = evt.pageX // evt.clientX ?
                        , y = evt.pageY // evt.clientY ?
                    ;
                    // if X & Y are < 0, probably means is over an open SELECT
                    return ($.layout.browser.msie && x < 0 && y < 0) || ((x >= L && x <= R) && (y >= T && y <= B));
                }

                /**
                 * Message/Logging Utility
                 *
                 * @example $.layout.msg("My message");    // log text
                 * @example $.layout.msg("My message", true);  // alert text
                 * @example $.layout.msg({ foo: "bar" }, "Title"); // log hash-data, with custom title
                 * @example $.layout.msg({ foo: "bar" }, true, "Title", { sort: false }); -OR-
                 * @example $.layout.msg({ foo: "bar" }, "Title", { sort: false, display: true }); // alert hash-data
                 *
                 * @param {(Object|string)}   info   String message OR Hash/Array
                 * @param {(Boolean|string|Object)=} [popup=false] True means alert-box - can be skipped
                 * @param {(Object|string)=}   [debugTitle=""] Title for Hash data - can be skipped
                 * @param {Object=}     [debugOpts]  Extra options for debug output
                 */
                , msg: function (info, popup, debugTitle, debugOpts) {
                    if ($.isPlainObject(info) && window.debugData) {
                        if (typeof popup === "string") {
                            debugOpts = debugTitle;
                            debugTitle = popup;
                        } else if (typeof debugTitle === "object") {
                            debugOpts = debugTitle;
                            debugTitle = null;
                        }
                        var t = debugTitle || "log( <object> )"
                            , o = $.extend({sort: false, returnHTML: false, display: false}, debugOpts);
                        if (popup === true || o.display)
                            debugData(info, t, o);
                        else if (window.console)
                            console.log(debugData(info, t, o));
                    } else if (popup)
                        alert(info);
                    else if (window.console)
                        console.log(info);
                    else {
                        var id = "#layoutLogger"
                            , $l = $(id);
                        if (!$l.length)
                            $l = createLog();
                        $l.children("ul").append('<li style="padding: 4px 10px; margin: 0; border-top: 1px solid #CCC;">' + info.replace(/\</g, "&lt;").replace(/\>/g, "&gt;") + '</li>');
                    }

                    function createLog() {
                        var pos = $.support.fixedPosition ? 'fixed' : 'absolute'
                            , $e = $('<div id="layoutLogger" style="position: ' + pos + '; top: 5px; z-index: 999999; max-width: 25%; overflow: hidden; border: 1px solid #000; border-radius: 5px; background: #FBFBFB; box-shadow: 0 2px 10px rgba(0,0,0,0.3);">'
                            + '<div style="font-size: 13px; font-weight: bold; padding: 5px 10px; background: #F6F6F6; border-radius: 5px 5px 0 0; cursor: move;">'
                            + '<span style="float: right; padding-left: 7px; cursor: pointer;" title="Remove Console" onclick="$(this).closest(\'#layoutLogger\').remove()">X</span>Layout console.log</div>'
                            + '<ul style="font-size: 13px; font-weight: none; list-style: none; margin: 0; padding: 0 0 2px;"></ul>'
                            + '</div>'
                        ).appendTo("body");
                        $e.css('left', $(window).width() - $e.outerWidth() - 5);
                        if ($.ui.draggable)
                            $e.draggable({handle: ':first-child'});
                        return $e;
                    }
                }

            };


            /*
     * $.layout.browser REPLACES removed $.browser, with extra data
     * Parsing code here adapted from jQuery 1.8 $.browse
     */
            (function () {
                var u = navigator.userAgent.toLowerCase()
                    , m = /(chrome)[ \/]([\w.]+)/.exec(u)
                    || /(webkit)[ \/]([\w.]+)/.exec(u)
                    || /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(u)
                    || /(msie) ([\w.]+)/.exec(u)
                    || u.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(u)
                    || []
                    , b = m[1] || ""
                    , v = m[2] || 0
                    , ie = b === "msie"
                    , cm = document.compatMode
                    , $s = $.support
                    , bs = $s.boxSizing !== undefined ? $s.boxSizing : $s.boxSizingReliable
                    , bm = !ie || !cm || cm === "CSS1Compat" || $s.boxModel || false
                    , lb = $.layout.browser = {
                    version: v
                    , safari: b === "webkit" // webkit (NOT chrome) = safari
                    , webkit: b === "chrome" // chrome = webkit
                    , msie: ie
                    , isIE6: ie && v == 6
                    // ONLY IE reverts to old box-model - Note that compatMode was deprecated as of IE8
                    , boxModel: bm
                    , boxSizing: !!(typeof bs === "function" ? bs() : bs)
                };
                if (b)
                    lb[b] = true; // set CURRENT browser
                /* OLD versions of jQuery only set $.support.boxModel after page is loaded
         * so if this is IE, use support.boxModel to test for quirks-mode (ONLY IE changes boxModel) */
                if (!bm && !cm)
                    $(function () {
                        lb.boxModel = $s.boxModel;
                    });
            })();


// DEFAULT OPTIONS
            $.layout.defaults = {
                /*
         * LAYOUT & LAYOUT-CONTAINER OPTIONS
         * - none of these options are applicable to individual panes
         */
                name: ""   // Not required, but useful for buttons and used for the state-cookie
                , containerClass: "ui-layout-container" // layout-container element
                , inset: null  // custom container-inset values (override padding)
                , scrollToBookmarkOnLoad: true  // after creating a layout, scroll to bookmark in URL (.../page.htm#myBookmark)
                , resizeWithWindow: true  // bind thisLayout.resizeAll() to the window.resize event
                , resizeWithWindowDelay: 200   // delay calling resizeAll because makes window resizing very jerky
                , resizeWithWindowMaxDelay: 0   // 0 = none - force resize every XX ms while window is being resized
                , maskPanesEarly: false  // true = create pane-masks on resizer.mouseDown instead of waiting for resizer.dragstart
                , onresizeall_start: null  // CALLBACK when resizeAll() STARTS - NOT pane-specific
                , onresizeall_end: null  // CALLBACK when resizeAll() ENDS - NOT pane-specific
                , onload_start: null  // CALLBACK when Layout inits - after options initialized, but before elements
                , onload_end: null  // CALLBACK when Layout inits - after EVERYTHING has been initialized
                , onunload_start: null  // CALLBACK when Layout is destroyed OR onWindowUnload
                , onunload_end: null  // CALLBACK when Layout is destroyed OR onWindowUnload
                , initPanes: true  // false = DO NOT initialize the panes onLoad - will init later
                , showErrorMessages: true  // enables fatal error messages to warn developers of common errors
                , showDebugMessages: false  // display console-and-alert debug msgs - IF this Layout version _has_ debugging code!
// Changing this zIndex value will cause other zIndex values to automatically change
                , zIndex: null  // the PANE zIndex - resizers and masks will be +1
// DO NOT CHANGE the zIndex values below unless you clearly understand their relationships
                , zIndexes: {// set _default_ z-index values here...
                    pane_normal: 0   // normal z-index for panes
                    , content_mask: 1   // applied to overlays used to mask content INSIDE panes during resizing
                    , resizer_normal: 2   // normal z-index for resizer-bars
                    , pane_sliding: 100   // applied to *BOTH* the pane and its resizer when a pane is 'slid open'
                    , pane_animate: 1000  // applied to the pane when being animated - not applied to the resizer
                    , resizer_drag: 10000  // applied to the CLONED resizer-bar when being 'dragged'
                }
                , errors: {
                    pane: "pane"  // description of "layout pane element" - used only in error messages
                    , selector: "selector" // description of "jQuery-selector" - used only in error messages
                    , addButtonError: "Error Adding Button\nInvalid "
                    , containerMissing: "UI Layout Initialization Error\nThe specified layout-container does not exist."
                    , centerPaneMissing: "UI Layout Initialization Error\nThe center-pane element does not exist.\nThe center-pane is a required element."
                    , noContainerHeight: "UI Layout Initialization Warning\nThe layout-container \"CONTAINER\" has no height.\nTherefore the layout is 0-height and hence 'invisible'!"
                    , callbackError: "UI Layout Callback Error\nThe EVENT callback is not a valid function."
                }
                /*
         * PANE DEFAULT SETTINGS
         * - settings under the 'panes' key become the default settings for *all panes*
         * - ALL pane-options can also be set specifically for each panes, which will override these 'default values'
         */
                , panes: {// default options for 'all panes' - will be overridden by 'per-pane settings'
                    applyDemoStyles: false  // NOTE: renamed from applyDefaultStyles for clarity

                    //Add responsiveness
                    , responsive:
                        {
                            enabled: false,
                            when: 'md'
                            , sizes: {
                                xl: 1140,
                                lg: 992,
                                md: 768,
                                sm: 576,
                                xs: 0
                            }
                        }
                    , closable: true  // pane can open & close
                    , resizable: true  // when open, pane can be resized
                    , slidable: true  // when closed, pane can 'slide open' over other panes - closes on mouse-out
                    , initClosed: false  // true = init pane as 'closed'
                    , initHidden: false   // true = init pane as 'hidden' - no resizer-bar/spacing
                    // SELECTORS
                    //, paneSelector:   ""   // MUST be pane-specific - jQuery selector for pane
                    , contentSelector: ".ui-layout-content" // INNER div/element to auto-size so only it scrolls, not the entire pane!
                    , contentIgnoreSelector: ".ui-layout-ignore" // element(s) to 'ignore' when measuring 'content'
                    , findNestedContent: false  // true = $P.find(contentSelector), false = $P.children(contentSelector)
                    // GENERIC ROOT-CLASSES - for auto-generated classNames
                    , paneClass: "ui-layout-pane" // Layout Pane
                    , resizerClass: "ui-layout-resizer" // Resizer Bar
                    , togglerClass: "ui-layout-toggler" // Toggler Button
                    , buttonClass: "ui-layout-button" // CUSTOM Buttons - eg: '[ui-layout-button]-toggle/-open/-close/-pin'
                    // ELEMENT SIZE & SPACING
                    //, size:     100   // MUST be pane-specific -initial size of pane
                    , minSize: 0   // when manually resizing a pane
                    , maxSize: 0   // ditto, 0 = no limit
                    , spacing_open: 6   // space between pane and adjacent panes - when pane is 'open'
                    , spacing_closed: 6   // ditto - when pane is 'closed'
                    , togglerLength_open: 50   // Length = WIDTH of toggler button on north/south sides - HEIGHT on east/west sides
                    , togglerLength_closed: 50   // 100% OR -1 means 'full height/width of resizer bar' - 0 means 'hidden'
                    , togglerAlign_open: "center" // top/left, bottom/right, center, OR...
                    , togglerAlign_closed: "center" // 1 => nn = offset from top/left, -1 => -nn == offset from bottom/right
                    , togglerContent_open: ""   // text or HTML to put INSIDE the toggler
                    , togglerContent_closed: ""   // ditto
                    // RESIZING OPTIONS
                    , resizerDblClickToggle: true  //
                    , autoResize: true  // IF size is 'auto' or a percentage, then recalc 'pixel size' whenever the layout resizes
                    , autoReopen: true  // IF a pane was auto-closed due to noRoom, reopen it when there is room? False = leave it closed
                    , resizerDragOpacity: 1   // option for ui.draggable
                    , draggableIframeFix: false //use the jquery ui 1.11.1 ifame fix for draggable elements
                    //, resizerCursor:   ""   // MUST be pane-specific - cursor when over resizer-bar
                    , maskContents: false  // true = add DIV-mask over-or-inside this pane so can 'drag' over IFRAMES
                    , maskObjects: false  // true = add IFRAME-mask over-or-inside this pane to cover objects/applets - content-mask will overlay this mask
                    , maskZindex: null  // will override zIndexes.content_mask if specified - not applicable to iframe-panes
                    , resizingGrid: false  // grid size that the resizers will snap-to during resizing, eg: [20,20]
                    , livePaneResizing: false  // true = LIVE Resizing as resizer is dragged
                    , liveContentResizing: false  // true = re-measure header/footer heights as resizer is dragged
                    , liveResizingTolerance: 1   // how many px change before pane resizes, to control performance
                    // SLIDING OPTIONS
                    , sliderCursor: "pointer" // cursor when resizer-bar will trigger 'sliding'
                    , slideTrigger_open: "click"  // click, dblclick, mouseenter
                    , slideTrigger_close: "mouseleave"// click, mouseleave
                    , slideDelay_open: 300   // applies only for mouseenter event - 0 = instant open
                    , slideDelay_close: 300   // applies only for mouseleave event (300ms is the minimum!)
                    , hideTogglerOnSlide: false  // when pane is slid-open, should the toggler show?
                    , preventQuickSlideClose: $.layout.browser.webkit // Chrome triggers slideClosed as it is opening
                    , preventPrematureSlideClose: false // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
                    // PANE-SPECIFIC TIPS & MESSAGES
                    , tips: {
                        Open: "Open"  // eg: "Open Pane"
                        , Close: "Close"
                        , Resize: "Resize"
                        , Slide: "Slide Open"
                        , Pin: "Pin"
                        , Unpin: "Un-Pin"
                        , noRoomToOpen: "Not enough room to show this panel." // alert if user tries to open a pane that cannot
                        , minSizeWarning: "Panel has reached its minimum size" // displays in browser statusbar
                        , maxSizeWarning: "Panel has reached its maximum size" // ditto
                    }
                    // HOT-KEYS & MISC
                    , showOverflowOnHover: false  // will bind allowOverflow() utility to pane.onMouseOver
                    , enableCursorHotkey: true  // enabled 'cursor' hotkeys
                    //, customHotkey:   ""   // MUST be pane-specific - EITHER a charCode OR a character
                    , customHotkeyModifier: "SHIFT"  // either 'SHIFT', 'CTRL' or 'CTRL+SHIFT' - NOT 'ALT'
                    // PANE ANIMATION
                    // NOTE: fxSss_open, fxSss_close & fxSss_size options (eg: fxName_open) are auto-generated if not passed
                    , fxName: "slide"  // ('none' or blank), slide, drop, scale -- only relevant to 'open' & 'close', NOT 'size'
                    , fxSpeed: null  // slow, normal, fast, 200, nnn - if passed, will OVERRIDE fxSettings.duration
                    , fxSettings: {}   // can be passed, eg: { easing: "easeOutBounce", duration: 1500 }
                    , fxOpacityFix: true  // tries to fix opacity in IE to restore anti-aliasing after animation
                    , animatePaneSizing: false  // true = animate resizing after dragging resizer-bar OR sizePane() is called
                    /*  NOTE: Action-specific FX options are auto-generated from the options above if not specifically set:
                     fxName_open:   "slide"  // 'Open' pane animation
                     fnName_close:   "slide"  // 'Close' pane animation
                     fxName_size:   "slide"  // 'Size' pane animation - when animatePaneSizing = true
                     fxSpeed_open:   null
                     fxSpeed_close:   null
                     fxSpeed_size:   null
                     fxSettings_open:  {}
                     fxSettings_close:  {}
                     fxSettings_size:  {}
                     */
                    // CHILD/NESTED LAYOUTS
                    , children: null  // Layout-options for nested/child layout - even {} is valid as options
                    , containerSelector: ''   // if child is NOT 'directly nested', a selector to find it/them (can have more than one child layout!)
                    , initChildren: true  // true = child layout will be created as soon as _this_ layout completes initialization
                    , destroyChildren: true  // true = destroy child-layout if this pane is destroyed
                    , resizeChildren: true  // true = trigger child-layout.resizeAll() when this pane is resized
                    // EVENT TRIGGERING
                    , triggerEventsOnLoad: false  // true = trigger onopen OR onclose callbacks when layout initializes
                    , triggerEventsDuringLiveResize: true // true = trigger onresize callback REPEATEDLY if livePaneResizing==true
                    // PANE CALLBACKS
                    , onshow_start: null  // CALLBACK when pane STARTS to Show - BEFORE onopen/onhide_start
                    , onshow_end: null  // CALLBACK when pane ENDS being Shown - AFTER  onopen/onhide_end
                    , onhide_start: null  // CALLBACK when pane STARTS to Close - BEFORE onclose_start
                    , onhide_end: null  // CALLBACK when pane ENDS being Closed - AFTER  onclose_end
                    , onopen_start: null  // CALLBACK when pane STARTS to Open
                    , onopen_end: null  // CALLBACK when pane ENDS being Opened
                    , onclose_start: null  // CALLBACK when pane STARTS to Close
                    , onclose_end: null  // CALLBACK when pane ENDS being Closed
                    , onresize_start: null  // CALLBACK when pane STARTS being Resized ***FOR ANY REASON***
                    , onresize_end: function () {
                    }  // CALLBACK when pane ENDS being Resized ***FOR ANY REASON***
                    , onsizecontent_start: null  // CALLBACK when sizing of content-element STARTS
                    , onsizecontent_end: null  // CALLBACK when sizing of content-element ENDS
                    , onswap_start: null  // CALLBACK when pane STARTS to Swap
                    , onswap_end: null  // CALLBACK when pane ENDS being Swapped
                    , ondrag_start: null  // CALLBACK when pane STARTS being ***MANUALLY*** Resized
                    , ondrag_end: null  // CALLBACK when pane ENDS being ***MANUALLY*** Resized
                }
                /*
         * PANE-SPECIFIC SETTINGS
         * - options listed below MUST be specified per-pane - they CANNOT be set under 'panes'
         * - all options under the 'panes' key can also be set specifically for any pane
         * - most options under the 'panes' key apply only to 'border-panes' - NOT the the center-pane
         */
                , north: {
                    paneSelector: ".ui-layout-north"
                    , size: "auto"  // eg: "auto", "30%", .30, 200
                    , resizerCursor: "n-resize" // custom = url(myCursor.cur)
                    , customHotkey: ""   // EITHER a charCode (43) OR a character ("o")
                }
                , south: {
                    paneSelector: ".ui-layout-south"
                    , size: "auto"
                    , resizerCursor: "s-resize"
                    , customHotkey: ""
                }
                , east: {
                    paneSelector: ".ui-layout-east"
                    , size: 200
                    , resizerCursor: "e-resize"
                    , customHotkey: ""
                }
                , west: {
                    paneSelector: ".ui-layout-west"
                    , size: 200
                    , resizerCursor: "w-resize"
                    , customHotkey: ""
                }
                , center: {
                    paneSelector: ".ui-layout-center"
                    , minWidth: 0
                    , minHeight: 0
                }
            };

            $.layout.optionsMap = {
                // layout/global options - NOT pane-options
                layout: ("name,instanceKey,stateManagement,effects,inset,zIndexes,errors,"
                    + "zIndex,scrollToBookmarkOnLoad,showErrorMessages,maskPanesEarly,"
                    + "outset,resizeWithWindow,resizeWithWindowDelay,resizeWithWindowMaxDelay,"
                    + "onresizeall,onresizeall_start,onresizeall_end,onload,onload_start,onload_end,onunload,onunload_start,onunload_end").split(",")
// borderPanes: [ ALL options that are NOT specified as 'layout' ]
                // default.panes options that apply to the center-pane (most options apply _only_ to border-panes)
                , center: ("paneClass,contentSelector,contentIgnoreSelector,findNestedContent,applyDemoStyles,triggerEventsOnLoad,"
                    + "showOverflowOnHover,maskContents,maskObjects,liveContentResizing,"
                    + "containerSelector,children,initChildren,resizeChildren,destroyChildren,"
                    + "onresize,onresize_start,onresize_end,onsizecontent,onsizecontent_start,onsizecontent_end").split(",")
                // options that MUST be specifically set 'per-pane' - CANNOT set in the panes (defaults) key
                , noDefault: ("paneSelector,resizerCursor,customHotkey").split(",")
            };

            /**
             * Processes options passed in converts flat-format data into subkey (JSON) format
             * In flat-format, subkeys are _currently_ separated with 2 underscores, like north__optName
             * Plugins may also call this method so they can transform their own data
             *
             * @param  {!Object} hash   Data/options passed by user - may be a single level or nested levels
             * @param  {boolean=} [addKeys=false] Should the primary layout.options keys be added if they do not exist?
             * @return {Object}      Returns hash of minWidth & minHeight
             */
            $.layout.transformData = function (hash, addKeys) {
                var json = addKeys ? {panes: {}, center: {}} : {} // init return object
                    , branch, optKey, keys, key, val, i, c;

                if (typeof hash !== "object")
                    return json; // no options passed

                // convert all 'flat-keys' to 'sub-key' format
                for (optKey in hash) {
                    branch = json;
                    val = hash[optKey];
                    keys = optKey.split("__"); // eg: west__size or north__fxSettings__duration
                    c = keys.length - 1;
                    // convert underscore-delimited to subkeys
                    for (i = 0; i <= c; i++) {
                        key = keys[i];
                        if (i === c) { // last key = value
                            if ($.isPlainObject(val))
                                branch[key] = $.layout.transformData(val); // RECURSE
                            else
                                branch[key] = val;
                        } else {
                            if (!branch[key])
                                branch[key] = {}; // create the subkey
                            // recurse to sub-key for next loop - if not done
                            branch = branch[key];
                        }
                    }
                }
                return json;
            };

// INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
            $.layout.backwardCompatibility = {
                // data used by renameOldOptions()
                map: {
                    // OLD Option Name:   NEW Option Name
                    applyDefaultStyles: "applyDemoStyles"
                    // CHILD/NESTED LAYOUTS
                    , childOptions: "children"
                    , initChildLayout: "initChildren"
                    , destroyChildLayout: "destroyChildren"
                    , resizeChildLayout: "resizeChildren"
                    , resizeNestedLayout: "resizeChildren"
                    // MISC Options
                    , resizeWhileDragging: "livePaneResizing"
                    , resizeContentWhileDragging: "liveContentResizing"
                    , triggerEventsWhileDragging: "triggerEventsDuringLiveResize"
                    , maskIframesOnResize: "maskContents"
                    // STATE MANAGEMENT
                    , useStateCookie: "stateManagement.enabled"
                    , "cookie.autoLoad": "stateManagement.autoLoad"
                    , "cookie.autoSave": "stateManagement.autoSave"
                    , "cookie.keys": "stateManagement.stateKeys"
                    , "cookie.name": "stateManagement.cookie.name"
                    , "cookie.domain": "stateManagement.cookie.domain"
                    , "cookie.path": "stateManagement.cookie.path"
                    , "cookie.expires": "stateManagement.cookie.expires"
                    , "cookie.secure": "stateManagement.cookie.secure"
                    // OLD Language options
                    , noRoomToOpenTip: "tips.noRoomToOpen"
                    , togglerTip_open: "tips.Close" // open   = Close
                    , togglerTip_closed: "tips.Open"  // closed = Open
                    , resizerTip: "tips.Resize"
                    , sliderTip: "tips.Slide"
                }

                /**
                 * @param {Object} opts
                 */
                , renameOptions: function (opts) {
                    var map = $.layout.backwardCompatibility.map
                        , oldData, newData, value
                    ;
                    for (var itemPath in map) {
                        oldData = getBranch(itemPath);
                        value = oldData.branch[oldData.key];
                        if (value !== undefined) {
                            newData = getBranch(map[itemPath], true);
                            newData.branch[newData.key] = value;
                            delete oldData.branch[oldData.key];
                        }
                    }

                    /**
                     * @param {string} path
                     * @param {boolean=} [create=false] Create path if does not exist
                     */
                    function getBranch(path, create) {
                        var a = path.split(".") // split keys into array
                            , c = a.length - 1
                            , D = {branch: opts, key: a[c]} // init branch at top & set key (last item)
                            , i = 0, k, undef;
                        for (; i < c; i++) { // skip the last key (data)
                            k = a[i];
                            if (D.branch[k] === undefined) { // child-key does not exist
                                if (create) {
                                    D.branch = D.branch[k] = {}; // create child-branch
                                } else // can't go any farther
                                    D.branch = {}; // branch is undefined
                            } else
                                D.branch = D.branch[k]; // get child-branch
                        }
                        return D;
                    }
                }

                /**
                 * @param {Object} opts
                 */
                , renameAllOptions: function (opts) {
                    var ren = $.layout.backwardCompatibility.renameOptions;
                    // rename root (layout) options
                    ren(opts);
                    // rename 'defaults' to 'panes'
                    if (opts.defaults) {
                        if (typeof opts.panes !== "object")
                            opts.panes = {};
                        $.extend(true, opts.panes, opts.defaults);
                        delete opts.defaults;
                    }
                    // rename options in the the options.panes key
                    if (opts.panes)
                        ren(opts.panes);
                    // rename options inside *each pane key*, eg: options.west
                    $.each($.layout.config.allPanes, function (i, pane) {
                        if (opts[pane])
                            ren(opts[pane]);
                    });
                    return opts;
                }
            };


            /* ============================================================
     * BEGIN WIDGET: $( selector ).layout( {options} );
     * ============================================================
     */
            $.fn.layout = function (opts) {
                var
                    // local aliases to global data
                    browser = $.layout.browser
                    , _c = $.layout.config

                    // local aliases to utlity methods
                    , cssW = $.layout.cssWidth
                    , cssH = $.layout.cssHeight
                    , elDims = $.layout.getElementDimensions
                    , styles = $.layout.getElementStyles
                    , evtObj = $.layout.getEventObject
                    , evtPane = $.layout.parsePaneName

                    /**
                     * options - populated by initOptions()
                     */
                    , options = $.extend(true, {}, $.layout.defaults)
                    , effects = options.effects = $.extend(true, {}, $.layout.effects)

                    /**
                     * layout-state object
                     */
                    , state = {
                        // generate unique ID to use for event.namespace so can unbind only events added by 'this layout'
                        id: "layout" + $.now() // code uses alias: sID
                        , initialized: false
                        , paneResizing: false
                        , panesSliding: {}
                        , container: {// list all keys referenced in code to avoid compiler error msgs
                            innerWidth: 0
                            , innerHeight: 0
                            , outerWidth: 0
                            , outerHeight: 0
                            , layoutWidth: 0
                            , layoutHeight: 0
                        }
                        , north: {childIdx: 0}
                        , south: {childIdx: 0}
                        , east: {childIdx: 0}
                        , west: {childIdx: 0}
                        , center: {childIdx: 0}
                    }

                    /**
                     * parent/child-layout pointers
                     */
//, hasParentLayout = false - exists ONLY inside Instance so can be set externally
                    , children = {
                        north: null
                        , south: null
                        , east: null
                        , west: null
                        , center: null
                    }

                    /*
         * ###########################
         *  INTERNAL HELPER FUNCTIONS
         * ###########################
         */

                    /**
                     * Manages all internal timers
                     */
                    , timer = {
                        data: {}
                        , set: function (s, fn, ms) {
                            timer.clear(s);
                            timer.data[s] = setTimeout(fn, ms);
                        }
                        , clear: function (s) {
                            var t = timer.data;
                            if (t[s]) {
                                clearTimeout(t[s]);
                                delete t[s];
                            }
                        }
                    }

                    /**
                     * Alert or console.log a message - IF option is enabled.
                     *
                     * @param {(string|!Object)} msg    Message (or debug-data) to display
                     * @param {boolean=}   [popup=false] True by default, means 'alert', false means use console.log
                     * @param {boolean=}   [debug=false] True means is a widget debugging message
                     */
                    , _log = function (msg, popup, debug) {
                        var o = options;
                        if ((o.showErrorMessages && !debug) || (debug && o.showDebugMessages))
                            $.layout.msg(o.name + ' / ' + msg, (popup !== false));
                        return false;
                    }

                    /**
                     * Executes a Callback function after a trigger event, like resize, open or close
                     *
                     * @param {string}    evtName     Name of the layout callback, eg "onresize_start"
                     * @param {(string|boolean)=} [pane=""]    This is passed only so we can pass the 'pane object' to the callback
                     * @param {(string|boolean)=} [skipBoundEvents=false] True = do not run events bound to the elements - only the callbacks set in options
                     */
                    , _runCallbacks = function (evtName, pane, skipBoundEvents) {
                        var hasPane = pane && isStr(pane)
                            , s = hasPane ? state[pane] : state
                            , o = hasPane ? options[pane] : options
                            , lName = options.name
                            // names like onopen and onopen_end separate are interchangeable in options...
                            , lng = evtName + (evtName.match(/_/) ? "" : "_end")
                            , shrt = lng.match(/_end$/) ? lng.substr(0, lng.length - 4) : ""
                            , fn = o[lng] || o[shrt]
                            , retVal = "NC" // NC = No Callback
                            , args = []
                            , $P = hasPane ? $Ps[pane] : 0
                        ;
                        if (hasPane && !$P) // a pane is specified, but does not exist!
                            return retVal;
                        if (!hasPane && typeof(pane) === "boolean") {
                            skipBoundEvents = pane; // allow pane param to be skipped for Layout callback
                            pane = "";
                        }

                        // first trigger the callback set in the options
                        if (fn) {
                            try {
                                // convert function name (string) to function object
                                if (isStr(fn)) {
                                    if (fn.match(/,/)) {
                                        // function name cannot contain a comma,
                                        // so must be a function name AND a parameter to pass
                                        args = fn.split(",")
                                            , fn = eval(args[0]);
                                    } else // just the name of an external function?
                                        fn = eval(fn);
                                }
                                // execute the callback, if exists
                                if (typeof fn === "function") {
                                    if (args.length)
                                        retVal = g(fn)(args[1]); // pass the argument parsed from 'list'
                                    else if (hasPane)
                                        // pass data: pane-name, pane-element, pane-state, pane-options, and layout-name
                                        retVal = g(fn)(pane, $Ps[pane], s, o, lName);
                                    else // must be a layout/container callback - pass suitable info
                                        retVal = g(fn)(Instance, s, o, lName);
                                }
                            } catch (ex) {
                                _log(options.errors.callbackError.replace(/EVENT/, String.prototype.trim((pane || "") + " " + lng)), false);
                                if (typeof(ex) === "string" && string.length)
                                    _log("Exception:  " + ex, false);
                            }
                        }

                        // trigger additional events bound directly to the pane
                        if (!skipBoundEvents && retVal !== false) {
                            if (hasPane) { // PANE events can be bound to each pane-elements
                                o = options[pane];
                                s = state[pane];
                                $P.triggerHandler("layoutpane" + lng, [pane, $P, s, o, lName]);
                                if (shrt)
                                    $P.triggerHandler("layoutpane" + shrt, [pane, $P, s, o, lName]);
                            } else { // LAYOUT events can be bound to the container-element
                                $N.triggerHandler("layout" + lng, [Instance, s, o, lName]);
                                if (shrt)
                                    $N.triggerHandler("layout" + shrt, [Instance, s, o, lName]);
                            }
                        }

                        // ALWAYS resizeChildren after an onresize_end event - even during initialization
                        // IGNORE onsizecontent_end event because causes child-layouts to resize TWICE
                        if (hasPane && evtName === "onresize_end") // BAD: || evtName === "onsizecontent_end"
                            resizeChildren(pane + "", true); // compiler hack -force string

                        return retVal;

                        function g(f) {
                            return f;
                        }

                        // compiler hack
                    }


                    /**
                     * cure iframe display issues in IE & other browsers
                     */
                    , _fixIframe = function (pane) {
                        if (browser.mozilla)
                            return; // skip FireFox - it auto-refreshes iframes onShow
                        var $P = $Ps[pane];
                        // if the 'pane' is an iframe, do it
                        if (state[pane].tagName === "IFRAME")
                            $P.css(_c.hidden).css(_c.visible);
                        else // ditto for any iframes INSIDE the pane
                            $P.find('IFRAME').css(_c.hidden).css(_c.visible);
                    }

                    /**
                     * @param  {string}  pane  Can accept ONLY a 'pane' (east, west, etc)
                     * @param  {number=}  outerSize (optional) Can pass a width, allowing calculations BEFORE element is resized
                     * @return {number}  Returns the innerHeight/Width of el by subtracting padding and borders
                     */
                    , cssSize = function (pane, outerSize) {
                        var fn = _c[pane].dir == "horz" ? cssH : cssW;
                        return fn($Ps[pane], outerSize);
                    }

                    /**
                     * @param  {string}  pane  Can accept ONLY a 'pane' (east, west, etc)
                     * @return {Object}  Returns hash of minWidth & minHeight
                     */
                    , cssMinDims = function (pane) {
                        // minWidth/Height means CSS width/height = 1px
                        var $P = $Ps[pane]
                            , dir = _c[pane].dir
                            , d = {
                                minWidth: 1001 - cssW($P, 1000)
                                , minHeight: 1001 - cssH($P, 1000)
                            }
                        ;
                        if (dir === "horz")
                            d.minSize = d.minHeight;
                        if (dir === "vert")
                            d.minSize = d.minWidth;
                        return d;
                    }

                    // TODO: see if these methods can be made more useful...
                    // TODO: *maybe* return cssW/H from these so caller can use this info

                    /**
                     * @param {(string|!Object)}  el
                     * @param {number=}    outerWidth
                     * @param {boolean=}    [autoHide=false]
                     */
                    , setOuterWidth = function (el, outerWidth, autoHide) {
                        var $E = el, w;
                        if (isStr(el))
                            $E = $Ps[el]; // west
                        else if (!el.jquery)
                            $E = $(el);
                        w = cssW($E, outerWidth);
                        $E.css({width: w});
                        if (w > 0) {
                            if (autoHide && $E.data('autoHidden') && $E.innerHeight() > 0) {
                                $E.show().data('autoHidden', false);
                                if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                                    // make hidden, then visible to 'refresh' display after animation
                                    $E.css(_c.hidden).css(_c.visible);
                            }
                        } else if (autoHide && !$E.data('autoHidden'))
                            $E.hide().data('autoHidden', true);
                    }

                    /**
                     * @param {(string|!Object)}  el
                     * @param {number=}    outerHeight
                     * @param {boolean=}    [autoHide=false]
                     */
                    , setOuterHeight = function (el, outerHeight, autoHide) {
                        var $E = el, h;
                        if (isStr(el))
                            $E = $Ps[el]; // west
                        else if (!el.jquery)
                            $E = $(el);
                        h = cssH($E, outerHeight);
                        $E.css({height: h, visibility: "visible"}); // may have been 'hidden' by sizeContent
                        if (h > 0 && $E.innerWidth() > 0) {
                            if (autoHide && $E.data('autoHidden')) {
                                $E.show().data('autoHidden', false);
                                if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                                    $E.css(_c.hidden).css(_c.visible);
                            }
                        } else if (autoHide && !$E.data('autoHidden'))
                            $E.hide().data('autoHidden', true);
                    }


                    /**
                     * Converts any 'size' params to a pixel/integer size, if not already
                     * If 'auto' or a decimal/percentage is passed as 'size', a pixel-size is calculated
                     *
                     /**
                     * @param  {string}    pane
                     * @param  {(string|number)=} size
                     * @param  {string=}    [dir]
                     * @return {number}
                     */
                    , _parseSize = function (pane, size, dir) {
                        if (!dir)
                            dir = _c[pane].dir;

                        if (isStr(size) && size.match(/%/))
                            size = (size === '100%') ? -1 : parseInt(size, 10) / 100; // convert % to decimal

                        if (size === 0)
                            return 0;
                        else if (size >= 1)
                            return parseInt(size, 10);

                        var o = options, avail = 0;
                        if (dir == "horz") // north or south or center.minHeight
                            avail = sC.innerHeight - ($Ps.north ? o.north.spacing_open : 0) - ($Ps.south ? o.south.spacing_open : 0);
                        else if (dir == "vert") // east or west or center.minWidth
                            avail = sC.innerWidth - ($Ps.west ? o.west.spacing_open : 0) - ($Ps.east ? o.east.spacing_open : 0);

                        if (size === -1) // -1 == 100%
                            return avail;
                        else if (size > 0) // percentage, eg: .25
                            return round(avail * size);
                        else if (pane == "center")
                            return 0;
                        else { // size < 0 || size=='auto' || size==Missing || size==Invalid
                            // auto-size the pane
                            var dim = (dir === "horz" ? "height" : "width")
                                , $P = $Ps[pane]
                                , $C = dim === 'height' ? $Cs[pane] : false
                                , vis = $.layout.showInvisibly($P) // show pane invisibly if hidden
                                , szP = $P.css(dim) // SAVE current pane size
                                , szC = $C ? $C.css(dim) : 0 // SAVE current content size
                            ;
                            $P.css(dim, "auto");
                            if ($C)
                                $C.css(dim, "auto");
                            size = (dim === "height") ? $P.outerHeight() : $P.outerWidth(); // MEASURE
                            $P.css(dim, szP).css(vis); // RESET size & visibility
                            if ($C)
                                $C.css(dim, szC);
                            return size;
                        }
                    }

                    /**
                     * Calculates current 'size' (outer-width or outer-height) of a border-pane - optionally with 'pane-spacing' added
                     *
                     * @param  {(string|!Object)} pane
                     * @param  {boolean=}   [inclSpace=false]
                     * @return {number}    Returns EITHER Width for east/west panes OR Height for north/south panes
                     */
                    , getPaneSize = function (pane, inclSpace) {
                        var
                            $P = $Ps[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , oSp = (inclSpace ? o.spacing_open : 0)
                            , cSp = (inclSpace ? o.spacing_closed : 0)
                        ;
                        if (!$P || s.isHidden)
                            return 0;
                        else if (s.isClosed || (s.isSliding && inclSpace))
                            return cSp;
                        else if (_c[pane].dir === "horz")
                            return $P.outerHeight() + oSp;
                        else // dir === "vert"
                            return $P.outerWidth() + oSp;
                    }

                    /**
                     * Calculate min/max pane dimensions and limits for resizing
                     *
                     * @param  {string}  pane
                     * @param  {boolean=} [slide=false]
                     */
                    , setSizeLimits = function (pane, slide) {
                        if (!isInitialized())
                            return;
                        var
                            o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , dir = c.dir
                            , type = c.sizeType.toLowerCase()
                            , isSliding = (slide != undefined ? slide : s.isSliding) // only open() passes 'slide' param
                            , $P = $Ps[pane]
                            , paneSpacing = o.spacing_open
                            // measure the pane on the *opposite side* from this pane
                            , altPane = _c.oppositeEdge[pane]
                            , altS = state[altPane]
                            , $altP = $Ps[altPane]
                            , altPaneSize = (!$altP || altS.isVisible === false || altS.isSliding ? 0 : (dir == "horz" ? $altP.outerHeight() : $altP.outerWidth()))
                            , altPaneSpacing = ((!$altP || altS.isHidden ? 0 : options[altPane][altS.isClosed !== false ? "spacing_closed" : "spacing_open"]) || 0)
                            // limitSize prevents this pane from 'overlapping' opposite pane
                            , containerSize = (dir == "horz" ? sC.innerHeight : sC.innerWidth)
                            , minCenterDims = cssMinDims("center")
                            , minCenterSize = dir == "horz" ? max(options.center.minHeight, minCenterDims.minHeight) : max(options.center.minWidth, minCenterDims.minWidth)
                            // if pane is 'sliding', then ignore center and alt-pane sizes - because 'overlays' them
                            , limitSize = (containerSize - paneSpacing - (isSliding ? 0 : (_parseSize("center", minCenterSize, dir) + altPaneSize + altPaneSpacing)))
                            , minSize = s.minSize = max(_parseSize(pane, o.minSize), cssMinDims(pane).minSize)
                            , maxSize = s.maxSize = min((o.maxSize ? _parseSize(pane, o.maxSize) : 100000), limitSize)
                            , r = s.resizerPosition = {} // used to set resizing limits
                            , top = sC.inset.top
                            , left = sC.inset.left
                            , W = sC.innerWidth
                            , H = sC.innerHeight
                            , rW = o.spacing_open // subtract resizer-width to get top/left position for south/east
                        ;
                        switch (pane) {
                            case "north":
                                r.min = top + minSize;
                                r.max = top + maxSize;
                                break;
                            case "west":
                                r.min = left + minSize;
                                r.max = left + maxSize;
                                break;
                            case "south":
                                r.min = top + H - maxSize - rW;
                                r.max = top + H - minSize - rW;
                                break;
                            case "east":
                                r.min = left + W - maxSize - rW;
                                r.max = left + W - minSize - rW;
                                break;
                        }
                    }

                    /**
                     * Returns data for setting the size/position of center pane. Also used to set Height for east/west panes
                     *
                     * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height
                     */
                    , calcNewCenterPaneDims = function () {
                        var d = {
                            top: getPaneSize("north", true) // true = include 'spacing' value for pane
                            , bottom: getPaneSize("south", true)
                            , left: getPaneSize("west", true)
                            , right: getPaneSize("east", true)
                            , width: 0
                            , height: 0
                        };

                        // NOTE: sC = state.container
                        // calc center-pane outer dimensions
                        d.width = sC.innerWidth - d.left - d.right;  // outerWidth
                        d.height = sC.innerHeight - d.bottom - d.top; // outerHeight
                        // add the 'container border/padding' to get final positions relative to the container
                        d.top += sC.inset.top;
                        d.bottom += sC.inset.bottom;
                        d.left += sC.inset.left;
                        d.right += sC.inset.right;

                        return d;
                    }


                    /**
                     * @param {!Object}  el
                     * @param {boolean=}  [allStates=false]
                     */
                    , getHoverClasses = function (el, allStates) {
                        var
                            $El = $(el)
                            , type = $El.data("layoutRole")
                            , pane = $El.data("layoutEdge")
                            , o = options[pane]
                            , root = o[type + "Class"]
                            , _pane = "-" + pane // eg: "-west"
                            , _open = "-open"
                            , _closed = "-closed"
                            , _slide = "-sliding"
                            , _hover = "-hover " // NOTE the trailing space
                            , _state = $El.hasClass(root + _closed) ? _closed : _open
                            , _alt = _state === _closed ? _open : _closed
                            , classes = (root + _hover) + (root + _pane + _hover) + (root + _state + _hover) + (root + _pane + _state + _hover)
                        ;
                        if (allStates) // when 'removing' classes, also remove alternate-state classes
                            classes += (root + _alt + _hover) + (root + _pane + _alt + _hover);

                        if (type == "resizer" && $El.hasClass(root + _slide))
                            classes += (root + _slide + _hover) + (root + _pane + _slide + _hover);

                        return String.prototype.trim.call(classes);
                    }
                    , addHover = function (evt, el) {
                        var $E = $(el || this);
                        if (evt && $E.data("layoutRole") === "toggler")
                            evt.stopPropagation(); // prevent triggering 'slide' on Resizer-bar
                        $E.addClass(getHoverClasses($E));
                    }
                    , removeHover = function (evt, el) {
                        var $E = $(el || this);
                        $E.removeClass(getHoverClasses($E, true));
                    }

                    , onResizerEnter = function (evt) { // ALSO called by toggler.mouseenter
                        var pane = $(this).data("layoutEdge")
                            , s = state[pane]
                            , $d = $(document)
                        ;
                        // ignore closed-panes and mouse moving back & forth over resizer!
                        // also ignore if ANY pane is currently resizing
                        if (s.isResizing || state.paneResizing)
                            return;

                        if (options.maskPanesEarly)
                            showMasks(pane, {resizing: true});
                    }
                    , onResizerLeave = function (evt, el) {
                        var e = el || this // el is only passed when called by the timer
                            , pane = $(e).data("layoutEdge")
                            , name = pane + "ResizerLeave"
                            , $d = $(document)
                        ;
                        timer.clear(pane + "_openSlider"); // cancel slideOpen timer, if set
                        timer.clear(name); // cancel enableSelection timer - may re/set below
                        // this method calls itself on a timer because it needs to allow
                        // enough time for dragging to kick-in and set the isResizing flag
                        // dragging has a 100ms delay set, so this delay must be >100
                        if (!el) // 1st call - mouseleave event
                            timer.set(name, function () {
                                onResizerLeave(evt, e);
                            }, 200);
                        // if user is resizing, dragStop will reset everything, so skip it here
                        else if (options.maskPanesEarly && !state.paneResizing) // 2nd call - by timer
                            hideMasks();
                    }

                    /*
         * ###########################
         *   INITIALIZATION METHODS
         * ###########################
         */

                    /**
                     * Initialize the layout - called automatically whenever an instance of layout is created
                     *
                     * @see  none - triggered onInit
                     * @return  mixed true = fully initialized | false = panes not initialized (yet) | 'cancel' = abort
                     */
                    , _create = function () {
                        // initialize config/options
                        initOptions();
                        var o = options
                            , s = state;

                        // TEMP state so isInitialized returns true during init process
                        s.creatingLayout = true;

                        // init plugins for this layout, if there are any (eg: stateManagement)
                        runPluginCallbacks(Instance, $.layout.onCreate);

                        // options & state have been initialized, so now run beforeLoad callback
                        // onload will CANCEL layout creation if it returns false
                        if (false === _runCallbacks("onload_start"))
                            return 'cancel';

                        // initialize the container element
                        _initContainer();

                        // bind hotkey function - keyDown - if required
                        initHotkeys();

                        // bind window.onunload
                        $(window).on("unload." + sID, unload);

                        // init plugins for this layout, if there are any (eg: customButtons)
                        runPluginCallbacks(Instance, $.layout.onLoad);

                        // if layout elements are hidden, then layout WILL NOT complete initialization!
                        // initLayoutElements will set initialized=true and run the onload callback IF successful
                        if (o.initPanes)
                            _initLayoutElements();

                        delete s.creatingLayout;

                        resizeAll();

                        $.each(["south", "north", "east", "west"], function (i, pane) {
                            if (!$Ps[pane])
                                return; // no pane - SKIP
                            o = options[pane];
                            s = state[pane];

                            var $P = $Ps[pane];
                            if (o.initHidden) {
                                hide(pane);
                            } else if (o.initClosed) {
                                close(pane);
                            }
                        });

                        return state.initialized;
                    }

                    /**
                     * Initialize the layout IF not already
                     *
                     * @see  All methods in Instance run this test
                     * @return  boolean true = layoutElements have been initialized | false = panes are not initialized (yet)
                     */
                    , isInitialized = function () {
                        if (state.initialized || state.creatingLayout)
                            return true; // already initialized
                        else
                            return _initLayoutElements(); // try to init panes NOW
                    }

                    /**
                     * Initialize the layout - called automatically whenever an instance of layout is created
                     *
                     * @see  _create() & isInitialized
                     * @param {boolean=}  [retry=false] // indicates this is a 2nd try
                     * @return  An object pointer to the instance created
                     */
                    , _initLayoutElements = function (retry) {
                        // initialize config/options
                        var o = options;
                        // CANNOT init panes inside a hidden container!
                        if (!$N.is(":visible")) {
                            // handle Chrome bug where popup window 'has no height'
                            // if layout is BODY element, try again in 50ms
                            // SEE: http://layout.jquery-dev.com/samples/test_popup_window.html
                            if (!retry && browser.webkit && $N[0].tagName === "BODY")
                                setTimeout(function () {
                                    _initLayoutElements(true);
                                }, 50);
                            return false;
                        }

                        // a center pane is required, so make sure it exists
                        if (!getPane("center").length) {
                            return _log(o.errors.centerPaneMissing);
                        }

                        // TEMP state so isInitialized returns true during init process
                        state.creatingLayout = true;

                        // update Container dims
                        $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values

                        // initialize all layout elements
                        initPanes(); // size & position panes - calls initHandles() - which calls initResizable()

                        if (o.scrollToBookmarkOnLoad) {
                            var l = self.location;
                            if (l.hash)
                                l.replace(l.hash); // scrollTo Bookmark
                        }

                        // check to see if this layout 'nested' inside a pane
                        if (Instance.hasParentLayout)
                            o.resizeWithWindow = false;
                        // bind resizeAll() for 'this layout instance' to window.resize event
                        else if (o.resizeWithWindow)
                            $(window).on("resize." + sID, windowResize);

                        delete state.creatingLayout;
                        state.initialized = true;

                        // init plugins for this layout, if there are any
                        runPluginCallbacks(Instance, $.layout.onReady);

                        // now run the onload callback, if exists
                        _runCallbacks("onload_end");

                        return true; // elements initialized successfully
                    }

                    /**
                     * Initialize nested layouts for a specific pane - can optionally pass layout-options
                     *
                     * @param {(string|Object)} evt_or_pane The pane being opened, ie: north, south, east, or west
                     * @param {Object=}   [opts]  Layout-options - if passed, will OVERRRIDE options[pane].children
                     * @return  An object pointer to the layout instance created - or null
                     */
                    , createChildren = function (evt_or_pane, opts) {
                        var pane = evtPane.call(this, evt_or_pane)
                            , $P = $Ps[pane]
                        ;
                        if (!$P)
                            return;
                        var $C = $Cs[pane]
                            , s = state[pane]
                            , o = options[pane]
                            , sm = options.stateManagement || {}
                            , cos = opts ? (o.children = opts) : o.children
                        ;
                        if ($.isPlainObject(cos))
                            cos = [cos]; // convert a hash to a 1-elem array
                        else if (!cos || !Array.isArray(cos))
                            return;

                        $.each(cos, function (idx, co) {
                            if (!$.isPlainObject(co))
                                return;

                            // determine which element is supposed to be the 'child container'
                            // if pane has a 'containerSelector' OR a 'content-div', use those instead of the pane
                            var $containers = co.containerSelector ? $P.find(co.containerSelector) : ($C || $P);

                            $containers.each(function () {
                                var $cont = $(this)
                                    , child = $cont.data("layout") // see if a child-layout ALREADY exists on this element
                                ;
                                // if no layout exists, but children are set, try to create the layout now
                                if (!child) {
                                    // TODO: see about moving this to the stateManagement plugin, as a method
                                    // set a unique child-instance key for this layout, if not already set
                                    setInstanceKey({container: $cont, options: co}, s);
                                    // If THIS layout has a hash in stateManagement.autoLoad,
                                    // then see if it also contains state-data for this child-layout
                                    // If so, copy the stateData to child.options.stateManagement.autoLoad
                                    if (sm.includeChildren && state.stateData[pane]) {
                                        // THIS layout's state was cached when its state was loaded
                                        var paneChildren = state.stateData[pane].children || {}
                                            , childState = paneChildren[co.instanceKey]
                                            , co_sm = co.stateManagement || (co.stateManagement = {autoLoad: true})
                                        ;
                                        // COPY the stateData into the autoLoad key
                                        if (co_sm.autoLoad === true && childState) {
                                            co_sm.autoSave = false; // disable autoSave because saving handled by parent-layout
                                            co_sm.includeChildren = true;  // cascade option - FOR NOW
                                            co_sm.autoLoad = $.extend(true, {}, childState); // COPY the state-hash
                                        }
                                    }

                                    // create the layout
                                    child = $cont.layout(co);

                                    // if successful, update data
                                    if (child) {
                                        // add the child and update all layout-pointers
                                        // MAY have already been done by child-layout calling parent.refreshChildren()
                                        refreshChildren(pane, child);
                                    }
                                }
                            });
                        });
                    }

                    , setInstanceKey = function (child, parentPaneState) {
                        // create a named key for use in state and instance branches
                        var $c = child.container
                            , o = child.options
                            , sm = o.stateManagement
                            , key = o.instanceKey || $c.data("layoutInstanceKey")
                        ;
                        if (!key)
                            key = (sm && sm.cookie ? sm.cookie.name : '') || o.name; // look for a name/key
                        if (!key)
                            key = "layout" + (++parentPaneState.childIdx); // if no name/key found, generate one
                        else
                            key = key.replace(/[^\w-]/gi, '_').replace(/_{2,}/g, '_');  // ensure is valid as a hash key
                        o.instanceKey = key;
                        $c.data("layoutInstanceKey", key); // useful if layout is destroyed and then recreated
                        return key;
                    }

                    /**
                     * @param {string}  pane  The pane being opened, ie: north, south, east, or west
                     * @param {Object=}  newChild New child-layout Instance to add to this pane
                     */
                    , refreshChildren = function (pane, newChild) {
                        var $P = $Ps[pane]
                            , pC = children[pane]
                            , s = state[pane]
                            , o
                        ;
                        // check for destroy()ed layouts and update the child pointers & arrays
                        if ($.isPlainObject(pC)) {
                            $.each(pC, function (key, child) {
                                if (child.destroyed)
                                    delete pC[key]
                            });
                            // if no more children, remove the children hash
                            if ($.isEmptyObject(pC))
                                pC = children[pane] = null; // clear children hash
                        }

                        // see if there is a directly-nested layout inside this pane
                        // if there is, then there can be only ONE child-layout, so check that...
                        if (!newChild && !pC) {
                            newChild = $P.data("layout");
                        }

                        // if a newChild instance was passed, add it to children[pane]
                        if (newChild) {
                            // update child.state
                            newChild.hasParentLayout = true; // set parent-flag in child
                            // instanceKey is a key-name used in both state and children
                            o = newChild.options;
                            // set a unique child-instance key for this layout, if not already set
                            setInstanceKey(newChild, s);
                            // add pointer to pane.children hash
                            if (!pC)
                                pC = children[pane] = {}; // create an empty children hash
                            pC[o.instanceKey] = newChild.container.data("layout"); // add childLayout instance
                        }

                        // ALWAYS refresh the pane.children alias, even if null
                        Instance[pane].children = children[pane];

                        // if newChild was NOT passed - see if there is a child layout NOW
                        if (!newChild) {
                            createChildren(pane); // MAY create a child and re-call this method
                        }
                    }

                    , windowResize = function () {
                        var o = options
                            , delay = Number(o.resizeWithWindowDelay);
                        if (delay < 10)
                            delay = 100; // MUST have a delay!
                        // resizing uses a delay-loop because the resize event fires repeatly - except in FF, but delay anyway
                        timer.clear("winResize"); // if already running
                        timer.set("winResize", function () {
                            timer.clear("winResize");
                            timer.clear("winResizeRepeater");
                            var dims = elDims($N, o.inset);
                            // only trigger resizeAll() if container has changed size
                            if (dims.innerWidth !== sC.innerWidth || dims.innerHeight !== sC.innerHeight)
                                resizeAll();
                        }, delay);
                        // ALSO set fixed-delay timer, if not already running
                        if (!timer.data["winResizeRepeater"])
                            setWindowResizeRepeater();
                    }

                    , setWindowResizeRepeater = function () {
                        var delay = Number(options.resizeWithWindowMaxDelay);
                        if (delay > 0)
                            timer.set("winResizeRepeater", function () {
                                setWindowResizeRepeater();
                                resizeAll();
                            }, delay);
                    }

                    , unload = function () {
                        var o = options;

                        _runCallbacks("onunload_start");

                        // trigger plugin callabacks for this layout (eg: stateManagement)
                        runPluginCallbacks(Instance, $.layout.onUnload);

                        _runCallbacks("onunload_end");
                    }

                    /**
                     * Validate and initialize container CSS and events
                     *
                     * @see  _create()
                     */
                    , _initContainer = function () {
                        var
                            N = $N[0]
                            , $H = $("html")
                            , tag = sC.tagName = N.tagName
                            , id = sC.id = N.id
                            , cls = sC.className = N.className
                            , o = options
                            , name = o.name
                            , props = "position,margin,padding,border"
                            , css = "layoutCSS"
                            , CSS = {}
                            , hid = "hidden" // used A LOT!
                            // see if this container is a 'pane' inside an outer-layout
                            , parent = $N.data("parentLayout") // parent-layout Instance
                            , pane = $N.data("layoutEdge")  // pane-name in parent-layout
                            , isChild = parent && pane
                            , num = $.layout.cssNum
                            , $parent, n
                        ;
                        // sC = state.container
                        //sC.selector = $N.selector.split(".slice")[0];
                        sC.ref = (o.name ? o.name + ' layout / ' : '') + tag + (id ? "#" + id : cls ? '.[' + cls + ']' : ''); // used in messages
                        sC.isBody = (tag === "BODY");

                        // try to find a parent-layout
                        if (!isChild && !sC.isBody) {
                            $parent = $N.closest("." + $.layout.defaults.panes.paneClass);
                            parent = $parent.data("parentLayout");
                            pane = $parent.data("layoutEdge");
                            isChild = parent && pane;
                        }

                        $N.data({
                            layout: Instance
                            , layoutContainer: sID // FLAG to indicate this is a layout-container - contains unique internal ID
                        })
                            .addClass(o.containerClass)
                        ;
                        var layoutMethods = {
                            destroy: ''
                            , initPanes: ''
                            , resizeAll: 'resizeAll'
                            , resize: 'resizeAll'
                        };
                        // loop hash and bind all methods - include layoutID namespacing
                        for (name in layoutMethods) {
                            $N.on("layout" + name.toLowerCase() + "." + sID, Instance[layoutMethods[name] || name]);
                        }

                        // if this container is another layout's 'pane', then set child/parent pointers
                        if (isChild) {
                            // update parent flag
                            Instance.hasParentLayout = true;
                            // set pointers to THIS child-layout (Instance) in parent-layout
                            parent.refreshChildren(pane, Instance);
                        }

                        // SAVE original container CSS for use in destroy()
                        if (!$N.data(css)) {
                            // handle props like overflow different for BODY & HTML - has 'system default' values
                            if (sC.isBody) {
                                // SAVE <BODY> CSS
                                $N.data(css, $.extend(styles($N, props), {
                                    height: $N.css("height")
                                    , overflow: $N.css("overflow")
                                    , overflowX: $N.css("overflowX")
                                    , overflowY: $N.css("overflowY")
                                }));
                                // ALSO SAVE <HTML> CSS
                                $H.data(css, $.extend(styles($H, 'padding'), {
                                    height: "auto" // FF would return a fixed px-size!
                                    , overflow: $H.css("overflow")
                                    , overflowX: $H.css("overflowX")
                                    , overflowY: $H.css("overflowY")
                                }));
                            } else // handle props normally for non-body elements
                                $N.data(css, styles($N, props + ",top,bottom,left,right,width,height,overflow,overflowX,overflowY"));
                        }

                        try {
                            // common container CSS
                            CSS = {
                                overflow: hid
                                , overflowX: hid
                                , overflowY: hid
                            };
                            $N.css(CSS);

                            if (o.inset && !$.isPlainObject(o.inset)) {
                                // can specify a single number for equal outset all-around
                                n = parseInt(o.inset, 10) || 0;
                                o.inset = {
                                    top: n
                                    , bottom: n
                                    , left: n
                                    , right: n
                                };
                            }

                            // format html & body if this is a full page layout
                            if (sC.isBody) {
                                // if HTML has padding, use this as an outer-spacing around BODY
                                if (!o.outset) {
                                    // use padding from parent-elem (HTML) as outset
                                    o.outset = {
                                        top: num($H, "paddingTop")
                                        , bottom: num($H, "paddingBottom")
                                        , left: num($H, "paddingLeft")
                                        , right: num($H, "paddingRight")
                                    };
                                } else if (!$.isPlainObject(o.outset)) {
                                    // can specify a single number for equal outset all-around
                                    n = parseInt(o.outset, 10) || 0;
                                    o.outset = {
                                        top: n
                                        , bottom: n
                                        , left: n
                                        , right: n
                                    };
                                }
                                // HTML
                                $H.css(CSS).css({
                                    height: "100%"
                                    , border: "none" // no border or padding allowed when using height = 100%
                                    , padding: 0  // ditto
                                    , margin: 0
                                });
                                // BODY
                                if (browser.isIE6) {
                                    // IE6 CANNOT use the trick of setting absolute positioning on all 4 sides - must have 'height'
                                    $N.css({
                                        width: "100%"
                                        , height: "100%"
                                        , border: "none" // no border or padding allowed when using height = 100%
                                        , padding: 0  // ditto
                                        , margin: 0
                                        , position: "relative"
                                    });
                                    // convert body padding to an inset option - the border cannot be measured in IE6!
                                    if (!o.inset)
                                        o.inset = elDims($N).inset;
                                } else { // use absolute positioning for BODY to allow borders & padding without overflow
                                    $N.css({
                                        width: "auto"
                                        , height: "auto"
                                        , margin: 0
                                        , position: "absolute" // allows for border and padding on BODY
                                    });
                                    // apply edge-positioning created above
                                    $N.css(o.outset);
                                }
                                // set current layout-container dimensions
                                $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values
                            } else {
                                // container MUST have 'position'
                                var p = $N.css("position");
                                if (!p || !p.match(/(fixed|absolute|relative)/))
                                    $N.css("position", "relative");

                                // set current layout-container dimensions
                                if ($N.is(":visible")) {
                                    $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT change insetX (padding) values
                                    if (sC.innerHeight < 1) // container has no 'height' - warn developer
                                        _log(o.errors.noContainerHeight.replace(/CONTAINER/, sC.ref));
                                }
                            }

                            // if container has min-width/height, then enable scrollbar(s)
                            if (num($N, "minWidth"))
                                $N.parent().css("overflowX", "auto");
                            if (num($N, "minHeight"))
                                $N.parent().css("overflowY", "auto");

                        } catch (ex) {
                        }
                    }

                    /**
                     * Bind layout hotkeys - if options enabled
                     *
                     * @see  _create() and addPane()
                     * @param {string=} [panes=""] The edge(s) to process
                     */
                    , initHotkeys = function (panes) {
                        panes = panes ? panes.split(",") : _c.borderPanes;
                        // bind keyDown to capture hotkeys, if option enabled for ANY pane
                        $.each(panes, function (i, pane) {
                            var o = options[pane];
                            if (o.enableCursorHotkey || o.customHotkey) {
                                $(document).on("keydown." + sID, keyDown); // only need to bind this ONCE
                                return false; // BREAK - binding was done
                            }
                        });
                    }

                    /**
                     * Build final OPTIONS data
                     *
                     * @see  _create()
                     */
                    , initOptions = function () {
                        var data, d, pane, key, val, i, c, o;

                        // reprocess user's layout-options to have correct options sub-key structure
                        opts = $.layout.transformData(opts, true); // panes = default subkey

                        // auto-rename old options for backward compatibility
                        opts = $.layout.backwardCompatibility.renameAllOptions(opts);

                        // if user-options has 'panes' key (pane-defaults), clean it...
                        if (!$.isEmptyObject(opts.panes)) {
                            // REMOVE any pane-defaults that MUST be set per-pane
                            data = $.layout.optionsMap.noDefault;
                            for (i = 0, c = data.length; i < c; i++) {
                                key = data[i];
                                delete opts.panes[key]; // OK if does not exist
                            }
                            // REMOVE any layout-options specified under opts.panes
                            data = $.layout.optionsMap.layout;
                            for (i = 0, c = data.length; i < c; i++) {
                                key = data[i];
                                delete opts.panes[key]; // OK if does not exist
                            }
                        }

                        // MOVE any NON-layout-options from opts-root to opts.panes
                        data = $.layout.optionsMap.layout;
                        var rootKeys = $.layout.config.optionRootKeys;
                        for (key in opts) {
                            val = opts[key];
                            if ($.inArray(key, rootKeys) < 0 && $.inArray(key, data) < 0) {
                                if (!opts.panes[key])
                                    opts.panes[key] = $.isPlainObject(val) ? $.extend(true, {}, val) : val;
                                delete opts[key]
                            }
                        }

                        // START by updating ALL options from opts
                        $.extend(true, options, opts);

                        // CREATE final options (and config) for EACH pane
                        $.each(_c.allPanes, function (i, pane) {

                            // apply 'pane-defaults' to CONFIG.[PANE]
                            _c[pane] = $.extend(true, {}, _c.panes, _c[pane]);

                            d = options.panes;
                            o = options[pane];

                            // center-pane uses SOME keys in defaults.panes branch
                            if (pane === 'center') {
                                // ONLY copy keys from opts.panes listed in: $.layout.optionsMap.center
                                data = $.layout.optionsMap.center;  // list of 'center-pane keys'
                                for (i = 0, c = data.length; i < c; i++) { // loop the list...
                                    key = data[i];
                                    // only need to use pane-default if pane-specific value not set
                                    if (!opts.center[key] && (opts.panes[key] || !o[key]))
                                        o[key] = d[key]; // pane-default
                                }
                            } else {
                                // border-panes use ALL keys in defaults.panes branch
                                o = options[pane] = $.extend(true, {}, d, o); // re-apply pane-specific opts AFTER pane-defaults
                                createFxOptions(pane);
                                // ensure all border-pane-specific base-classes exist
                                if (!o.resizerClass)
                                    o.resizerClass = "ui-layout-resizer";
                                if (!o.togglerClass)
                                    o.togglerClass = "ui-layout-toggler";
                            }
                            // ensure we have base pane-class (ALL panes)
                            if (!o.paneClass)
                                o.paneClass = "ui-layout-pane";
                        });

                        // update options.zIndexes if a zIndex-option specified
                        var zo = opts.zIndex
                            , z = options.zIndexes;
                        if (zo > 0) {
                            z.pane_normal = zo;
                            z.content_mask = max(zo + 1, z.content_mask); // MIN = +1
                            z.resizer_normal = max(zo + 2, z.resizer_normal); // MIN = +2
                        }

                        // DELETE 'panes' key now that we are done - values were copied to EACH pane
                        delete options.panes;


                        function createFxOptions(pane) {
                            var o = options[pane]
                                , d = options.panes;
                            // ensure fxSettings key to avoid errors
                            if (!o.fxSettings)
                                o.fxSettings = {};
                            if (!d.fxSettings)
                                d.fxSettings = {};

                            $.each(["_open", "_close", "_size"], function (i, n) {
                                var
                                    sName = "fxName" + n
                                    , sSpeed = "fxSpeed" + n
                                    , sSettings = "fxSettings" + n
                                    // recalculate fxName according to specificity rules
                                    , fxName = o[sName] =
                                    o[sName] // options.west.fxName_open
                                    || d[sName] // options.panes.fxName_open
                                    || o.fxName // options.west.fxName
                                    || d.fxName // options.panes.fxName
                                    || "none"  // MEANS $.layout.defaults.panes.fxName == "" || false || null || 0
                                    , fxExists = $.effects && ($.effects[fxName] || ($.effects.effect && $.effects.effect[fxName]))
                                ;
                                // validate fxName to ensure is valid effect - MUST have effect-config data in options.effects
                                if (fxName === "none" || !options.effects[fxName] || !fxExists)
                                    fxName = o[sName] = "none"; // effect not loaded OR unrecognized fxName

                                // set vars for effects subkeys to simplify logic
                                var fx = options.effects[fxName] || {} // effects.slide
                                    , fx_all = fx.all || null    // effects.slide.all
                                    , fx_pane = fx[pane] || null    // effects.slide.west
                                ;
                                // create fxSpeed[_open|_close|_size]
                                o[sSpeed] =
                                    o[sSpeed]    // options.west.fxSpeed_open
                                    || d[sSpeed]    // options.west.fxSpeed_open
                                    || o.fxSpeed    // options.west.fxSpeed
                                    || d.fxSpeed    // options.panes.fxSpeed
                                    || null     // DEFAULT - let fxSetting.duration control speed
                                ;
                                // create fxSettings[_open|_close|_size]
                                o[sSettings] = $.extend(
                                    true
                                    , {}
                                    , fx_all     // effects.slide.all
                                    , fx_pane     // effects.slide.west
                                    , d.fxSettings   // options.panes.fxSettings
                                    , o.fxSettings   // options.west.fxSettings
                                    , d[sSettings]   // options.panes.fxSettings_open
                                    , o[sSettings]   // options.west.fxSettings_open
                                );
                            });

                            // DONE creating action-specific-settings for this pane,
                            // so DELETE generic options - are no longer meaningful
                            delete o.fxName;
                            delete o.fxSpeed;
                            delete o.fxSettings;
                        }
                    }

                    /**
                     * Initialize module objects, styling, size and position for all panes
                     *
                     * @see  _initElements()
                     * @param {string} pane  The pane to process
                     */
                    , getPane = function (pane) {
                        var sel = options[pane].paneSelector;
                        if (sel.substr(0, 1) === "#") // ID selector
                            // NOTE: elements selected 'by ID' DO NOT have to be 'children'
                            return $N.find(sel).eq(0);
                        else { // class or other selector
                            var $P = $N.children(sel).eq(0);
                            // look for the pane nested inside a 'form' element
                            return $P.length ? $P : $N.children("form:first").children(sel).eq(0);
                        }
                    }

                    /**
                     * @param {Object=}  evt
                     */
                    , initPanes = function (evt) {
                        // stopPropagation if called by trigger("layoutinitpanes") - use evtPane utility
                        evtPane(evt);

                        // NOTE: do north & south FIRST so we can measure their height - do center LAST
                        $.each(_c.allPanes, function (idx, pane) {
                            addPane(pane, true);
                        });

                        // init the pane-handles NOW in case we have to hide or close the pane below
                        initHandles();

                        // now that all panes have been initialized and initially-sized,
                        // make sure there is really enough space available for each pane
                        $.each(_c.borderPanes, function (i, pane) {
                            if ($Ps[pane] && state[pane].isVisible) { // pane is OPEN
                                setSizeLimits(pane);
                                makePaneFit(pane); // pane may be Closed, Hidden or Resized by makePaneFit()
                            }
                        });
                        // size center-pane AGAIN in case we 'closed' a border-pane in loop above
                        sizeMidPanes("center");

                        // Chrome/Webkit sometimes fires callbacks BEFORE it completes resizing!
                        // Before RC30.3, there was a 10ms delay here, but that caused layout
                        // to load asynchrously, which is BAD, so try skipping delay for now

                        // process pane contents and callbacks, and init/resize child-layout if exists
                        $.each(_c.allPanes, function (idx, pane) {
                            afterInitPane(pane);
                        });
                    }

                    /**
                     * Add a pane to the layout - subroutine of initPanes()
                     *
                     * @see  initPanes()
                     * @param {string} pane   The pane to process
                     * @param {boolean=} [force=false] Size content after init
                     */
                    , addPane = function (pane, force) {
                        if (!force && !isInitialized())
                            return;
                        var
                            o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , dir = c.dir
                            , fx = s.fx
                            , spacing = o.spacing_open || 0
                            , isCenter = (pane === "center")
                            , CSS = {}
                            , $P = $Ps[pane]
                            , size, minSize, maxSize, child
                        ;
                        // if pane-pointer already exists, remove the old one first
                        if ($P)
                            removePane(pane, false, true, false);
                        else
                            $Cs[pane] = false; // init

                        $P = $Ps[pane] = getPane(pane);
                        if (!$P.length) {
                            $Ps[pane] = false; // logic
                            return;
                        }

                        // SAVE original Pane CSS
                        if (!$P.data("layoutCSS")) {
                            var props = "position,top,left,bottom,right,width,height,overflow,zIndex,display,backgroundColor,padding,margin,border";
                            $P.data("layoutCSS", styles($P, props));
                        }

                        // create alias for pane data in Instance - initHandles will add more
                        Instance[pane] = {
                            name: pane
                            , pane: $Ps[pane]
                            , content: $Cs[pane]
                            , options: options[pane]
                            , state: state[pane]
                            , children: children[pane]
                        };

                        // add classes, attributes & events
                        $P.data({
                            parentLayout: Instance  // pointer to Layout Instance
                            , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                            , layoutEdge: pane
                            , layoutRole: "pane"
                        })
                            .css(c.cssReq).css("zIndex", new String(options.zIndexes.pane_normal))
                            .css(o.applyDemoStyles ? c.cssDemo : {}) // demo styles
                            .addClass(o.paneClass + " " + o.paneClass + "-" + pane) // default = "ui-layout-pane ui-layout-pane-west" - may be a dupe of 'paneSelector'
                            .on("mouseenter." + sID, addHover)
                            .on("mouseleave." + sID, removeHover)
                        ;
                        var paneMethods = {
                            hide: ''
                            , show: ''
                            , toggle: ''
                            , close: ''
                            , open: ''
                            , slideOpen: ''
                            , slideClose: ''
                            , slideToggle: ''
                            , size: 'sizePane'
                            , sizePane: 'sizePane'
                            , sizeContent: ''
                            , sizeHandles: ''
                            , enableClosable: ''
                            , disableClosable: ''
                            , enableSlideable: ''
                            , disableSlideable: ''
                            , enableResizable: ''
                            , disableResizable: ''
                            , swapPanes: 'swapPanes'
                            , swap: 'swapPanes'
                            , move: 'swapPanes'
                            , removePane: 'removePane'
                            , remove: 'removePane'
                            , createChildren: ''
                            , resizeChildren: ''
                            , resizeAll: 'resizeAll'
                            , resizeLayout: 'resizeAll'
                        }
                            , name;
                        // loop hash and bind all methods - include layoutID namespacing
                        for (name in paneMethods) {
                            $P.on("layoutpane" + name.toLowerCase() + "." + sID, Instance[paneMethods[name] || name]);
                        }

                        // see if this pane has a 'scrolling-content element'
                        initContent(pane, false); // false = do NOT sizeContent() - called later

                        if (!isCenter) {
                            // call _parseSize AFTER applying pane classes & styles - but before making visible (if hidden)
                            // if o.size is auto or not valid, then MEASURE the pane and use that as its 'size'
                            size = s.size = _parseSize(pane, o.size);
                            minSize = _parseSize(pane, o.minSize) || 1;
                            maxSize = _parseSize(pane, o.maxSize) || 100000;
                            if (size > 0)
                                size = max(min(size, maxSize), minSize);
                            s.autoResize = o.autoResize; // used with percentage sizes

                            // state for border-panes
                            s.isClosed = false; // true = pane is closed
                            s.isSliding = false; // true = pane is currently open by 'sliding' over adjacent panes
                            s.isResizing = false; // true = pane is in process of being resized
                            s.isHidden = false; // true = pane is hidden - no spacing, resizer or toggler is visible!

                            // array for 'pin buttons' whose classNames are auto-updated on pane-open/-close
                            if (!s.pins)
                                s.pins = [];
                        }
                        // states common to ALL panes
                        s.tagName = $P[0].tagName;
                        s.edge = pane;  // useful if pane is (or about to be) 'swapped' - easy find out where it is (or is going)
                        s.noRoom = false; // true = pane 'automatically' hidden due to insufficient room - will unhide automatically
                        s.isVisible = true;  // false = pane is invisible - closed OR hidden - simplify logic

                        // init pane positioning
                        setPanePosition(pane);

                        // if pane is not visible,
                        if (dir === "horz") // north or south pane
                            CSS.height = cssH($P, size);
                        else if (dir === "vert") // east or west pane
                            CSS.width = cssW($P, size);
                        //else if (isCenter) {}

                        $P.css(CSS); // apply size -- top, bottom & height will be set by sizeMidPanes
                        if (dir != "horz")
                            sizeMidPanes(pane, true); // true = skipCallback

                        // if manually adding a pane AFTER layout initialization, then...
                        if (state.initialized) {
                            initHandles(pane);
                            initHotkeys(pane);
                        }

                        // close or hide the pane if specified in settings
                        if (o.initClosed && o.closable && !o.initHidden)
                            close(pane, true, true); // true, true = force, noAnimation
                        else if (o.initHidden || o.initClosed)
                            hide(pane); // will be completely invisible - no resizer or spacing
                        else if (!s.noRoom)
                            // make the pane visible - in case was initially hidden
                            $P.css("display", "block");
                        // ELSE setAsOpen() - called later by initHandles()

                        // RESET visibility now - pane will appear IF display:block
                        $P.css("visibility", "visible");

                        // check option for auto-handling of pop-ups & drop-downs
                        if (o.showOverflowOnHover) {
                            $P.on('mouseenter', allowOverflow);
                            $P.on('mouseleave', resetOverflow);
                        }

                        // if manually adding a pane AFTER layout initialization, then...
                        if (state.initialized) {
                            afterInitPane(pane);
                        }
                    }

                    , afterInitPane = function (pane) {
                        var $P = $Ps[pane]
                            , s = state[pane]
                            , o = options[pane]
                        ;
                        if (!$P)
                            return;

                        // see if there is a directly-nested layout inside this pane
                        if ($P.data("layout"))
                            refreshChildren(pane, $P.data("layout"));

                        // process pane contents and callbacks, and init/resize child-layout if exists
                        if (s.isVisible) { // pane is OPEN
                            if (state.initialized) // this pane was added AFTER layout was created
                                resizeAll(); // will also sizeContent
                            else
                                sizeContent(pane);

                            if (o.triggerEventsOnLoad)
                                _runCallbacks("onresize_end", pane);
                            else // automatic if onresize called, otherwise call it specifically
                                // resize child - IF inner-layout already exists (created before this layout)
                                resizeChildren(pane, true); // a previously existing childLayout
                        }

                        // init childLayouts - even if pane is not visible
                        if (o.initChildren && o.children)
                            createChildren(pane);
                    }

                    /**
                     * @param {string=} panes  The pane(s) to process
                     */
                    , setPanePosition = function (panes) {
                        panes = panes ? panes.split(",") : _c.borderPanes;

                        // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
                        $.each(panes, function (i, pane) {
                            var $P = $Ps[pane]
                                , $R = $Rs[pane]
                                , o = options[pane]
                                , s = state[pane]
                                , side = _c[pane].side
                                , CSS = {}
                            ;
                            if (!$P)
                                return; // pane does not exist - skip

                            // set css-position to account for container borders & padding
                            switch (pane) {
                                case "north":
                                    CSS.top = sC.inset.top;
                                    CSS.left = sC.inset.left;
                                    CSS.right = sC.inset.right;
                                    break;
                                case "south":
                                    CSS.bottom = sC.inset.bottom;
                                    CSS.left = sC.inset.left;
                                    CSS.right = sC.inset.right;
                                    break;
                                case "west":
                                    CSS.left = sC.inset.left; // top, bottom & height set by sizeMidPanes()
                                    break;
                                case "east":
                                    CSS.right = sC.inset.right; // ditto
                                    break;
                                case "center": // top, left, width & height set by sizeMidPanes()
                            }
                            // apply position
                            $P.css(CSS);

                            // update resizer position
                            if ($R && s.isClosed)
                                $R.css(side, sC.inset[side]);
                            else if ($R && !s.isHidden)
                                $R.css(side, sC.inset[side] + getPaneSize(pane));
                        });
                    }

                    /**
                     * Initialize module objects, styling, size and position for all resize bars and toggler buttons
                     *
                     * @see  _create()
                     * @param {string=} [panes=""] The edge(s) to process
                     */
                    , initHandles = function (panes) {
                        panes = panes ? panes.split(",") : _c.borderPanes;

                        // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
                        $.each(panes, function (i, pane) {
                            var $P = $Ps[pane];
                            $Rs[pane] = false; // INIT
                            $Ts[pane] = false;
                            if (!$P)
                                return; // pane does not exist - skip

                            var o = options[pane]
                                , s = state[pane]
                                , c = _c[pane]
                                , paneId = o.paneSelector.substr(0, 1) === "#" ? o.paneSelector.substr(1) : ""
                                , rClass = o.resizerClass
                                , tClass = o.togglerClass
                                , spacing = (s.isVisible ? o.spacing_open : o.spacing_closed)
                                , _pane = "-" + pane // used for classNames
                                , _state = (s.isVisible ? "-open" : "-closed") // used for classNames
                                , I = Instance[pane]
                                // INIT RESIZER BAR
                                , $R = I.resizer = $Rs[pane] = $("<div></div>")
                                // INIT TOGGLER BUTTON
                                , $T = I.toggler = (o.closable ? $Ts[pane] = $("<div></div>") : false)
                            ;

                            //if (s.isVisible && o.resizable) ... handled by initResizable
                            if (!s.isVisible && o.slidable)
                                $R.attr("title", o.tips.Slide).css("cursor", o.sliderCursor);

                            $R // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "paneLeft-resizer"
                                .attr("id", paneId ? paneId + "-resizer" : "")
                                .data({
                                    parentLayout: Instance
                                    , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                    , layoutEdge: pane
                                    , layoutRole: "resizer"
                                })
                                .css(_c.resizers.cssReq).css("zIndex", new String(options.zIndexes.resizer_normal))
                                .css(o.applyDemoStyles ? _c.resizers.cssDemo : {}) // add demo styles
                                .addClass(rClass + " " + rClass + _pane)
                                .on('mouseenter', addHover).on('mouseleave', removeHover) // ALWAYS add hover-classes, even if resizing is not enabled - handle with CSS instead

                                .on('mouseenter', onResizerEnter).on('mouseleave', onResizerLeave) // ALWAYS NEED resizer.mouseleave to balance toggler.mouseenter

                                .on('mousedown', $.layout.disableTextSelection) // prevent text-selection OUTSIDE resizer
                                .on('mouseup',$.layout.enableTextSelection)  // not really necessary, but just in case
                                .appendTo($N) // append DIV to container
                            ;
                            if ($.fn.disableSelection)
                                $R.disableSelection(); // prevent text-selection INSIDE resizer
                            if (o.resizerDblClickToggle)
                                $R.on("dblclick." + sID, toggle);

                            if ($T) {
                                $T // if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "#paneLeft-toggler"
                                    .attr("id", paneId ? paneId + "-toggler" : "")
                                    .data({
                                        parentLayout: Instance
                                        , layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                        , layoutEdge: pane
                                        , layoutRole: "toggler"
                                    })
                                    .css(_c.togglers.cssReq) // add base/required styles
                                    .css(o.applyDemoStyles ? _c.togglers.cssDemo : {}) // add demo styles
                                    .addClass(tClass + " " + tClass + _pane)
                                    .on('mouseenter', addHover).on('mouseleave', removeHover) // ALWAYS add hover-classes, even if toggling is not enabled - handle with CSS instead
                                    .on("mouseenter", onResizerEnter) // NEED toggler.mouseenter because mouseenter MAY NOT fire on resizer
                                    .appendTo($R) // append SPAN to resizer DIV
                                ;
                                // ADD INNER-SPANS TO TOGGLER
                                if (o.togglerContent_open) // ui-layout-open
                                    $("<span>" + o.togglerContent_open + "</span>")
                                        .data({
                                            layoutEdge: pane
                                            , layoutRole: "togglerContent"
                                        })
                                        .data("layoutRole", "togglerContent")
                                        .data("layoutEdge", pane)
                                        .addClass("content content-open")
                                        .css("display", "none")
                                        .appendTo($T)
                                    //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-open instead!
                                    ;
                                if (o.togglerContent_closed) // ui-layout-closed
                                    $("<span>" + o.togglerContent_closed + "</span>")
                                        .data({
                                            layoutEdge: pane
                                            , layoutRole: "togglerContent"
                                        })
                                        .addClass("content content-closed")
                                        .css("display", "none")
                                        .appendTo($T)
                                    //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-closed instead!
                                    ;
                                // ADD TOGGLER.click/.hover
                                enableClosable(pane);
                            }

                            // add Draggable events
                            initResizable(pane);

                            // ADD CLASSNAMES & SLIDE-BINDINGS - eg: class="resizer resizer-west resizer-open"
                            if (s.isVisible)
                                setAsOpen(pane); // onOpen will be called, but NOT onResize
                            else {
                                setAsClosed(pane); // onClose will be called
                                bindStartSlidingEvents(pane, true); // will enable events IF option is set
                            }

                        });

                        // SET ALL HANDLE DIMENSIONS
                        sizeHandles();
                    }


                    /**
                     * Initialize scrolling ui-layout-content div - if exists
                     *
                     * @see  initPane() - or externally after an Ajax injection
                     * @param {string} pane   The pane to process
                     * @param {boolean=} [resize=true] Size content after init
                     */
                    , initContent = function (pane, resize) {
                        if (!isInitialized())
                            return;
                        var
                            o = options[pane]
                            , sel = o.contentSelector
                            , I = Instance[pane]
                            , $P = $Ps[pane]
                            , $C
                        ;
                        if (sel)
                            $C = I.content = $Cs[pane] = (o.findNestedContent)
                                ? $P.find(sel).eq(0) // match 1-element only
                                : $P.children(sel).eq(0)
                            ;
                        if ($C && $C.length) {
                            $C.data("layoutRole", "content");
                            // SAVE original Content CSS
                            if (!$C.data("layoutCSS"))
                                $C.data("layoutCSS", styles($C, "height"));
                            $C.css(_c.content.cssReq);
                            if (o.applyDemoStyles) {
                                $C.css(_c.content.cssDemo); // add padding & overflow: auto to content-div
                                $P.css(_c.content.cssDemoPane); // REMOVE padding/scrolling from pane
                            }
                            // ensure no vertical scrollbar on pane - will mess up measurements
                            if ($P.css("overflowX").match(/(scroll|auto)/)) {
                                $P.css("overflow", "hidden");
                            }
                            state[pane].content = {}; // init content state
                            if (resize !== false)
                                sizeContent(pane);
                            // sizeContent() is called AFTER init of all elements
                        } else
                            I.content = $Cs[pane] = false;
                    }


                    /**
                     * Add resize-bars to all panes that specify it in options
                     * -dependancy: $.fn.resizable - will skip if not found
                     *
                     * @see  _create()
                     * @param {string=} [panes=""] The edge(s) to process
                     */
                    , initResizable = function (panes) {
                        var draggingAvailable = $.layout.plugins.draggable
                            , side // set in start()
                        ;
                        panes = panes ? panes.split(",") : _c.borderPanes;

                        $.each(panes, function (idx, pane) {
                            var o = options[pane];
                            if (!draggingAvailable || !$Ps[pane] || !o.resizable) {
                                o.resizable = false;
                                return true; // skip to next
                            }

                            var s = state[pane]
                                , z = options.zIndexes
                                , c = _c[pane]
                                , side = c.dir == "horz" ? "top" : "left"
                                , $P = $Ps[pane]
                                , $R = $Rs[pane]
                                , base = o.resizerClass
                                , lastPos = 0 // used when live-resizing
                                , r, live // set in start because may change
                                // 'drag' classes are applied to the ORIGINAL resizer-bar while dragging is in process
                                , resizerClass = base + "-drag"    // resizer-drag
                                , resizerPaneClass = base + "-" + pane + "-drag"  // resizer-north-drag
                                // 'helper' class is applied to the CLONED resizer-bar while it is being dragged
                                , helperClass = base + "-dragging"   // resizer-dragging
                                , helperPaneClass = base + "-" + pane + "-dragging" // resizer-north-dragging
                                , helperLimitClass = base + "-dragging-limit" // resizer-drag
                                , helperPaneLimitClass = base + "-" + pane + "-dragging-limit" // resizer-north-drag
                                , helperClassesSet = false      // logic var
                            ;

                            if (!s.isClosed)
                                $R.attr("title", o.tips.Resize)
                                    .css("cursor", o.resizerCursor); // n-resize, s-resize, etc

                            $R.draggable({
                                containment: $N[0] // limit resizing to layout container
                                , axis: (c.dir == "horz" ? "y" : "x") // limit resizing to horz or vert axis
                                , delay: 0
                                , distance: 1
                                , grid: o.resizingGrid
                                // basic format for helper - style it using class: .ui-draggable-dragging
                                , helper: "clone"
                                , opacity: o.resizerDragOpacity
                                , addClasses: false // avoid ui-state-disabled class when disabled
                                , iframeFix:  o.draggableIframeFix
                                , zIndex: z.resizer_drag

                                , start: function (e, ui) {
                                    // REFRESH options & state pointers in case we used swapPanes
                                    o = options[pane];
                                    s = state[pane];
                                    // re-read options
                                    live = o.livePaneResizing;

                                    // ondrag_start callback - will CANCEL hide if returns false
                                    // TODO: dragging CANNOT be cancelled like this, so see if there is a way?
                                    if (false === _runCallbacks("ondrag_start", pane))
                                        return false;

                                    s.isResizing = true; // prevent pane from closing while resizing
                                    state.paneResizing = pane; // easy to see if ANY pane is resizing
                                    timer.clear(pane + "_closeSlider"); // just in case already triggered

                                    // SET RESIZER LIMITS - used in drag()
                                    setSizeLimits(pane); // update pane/resizer state
                                    r = s.resizerPosition;
                                    lastPos = ui.position[side];

                                    $R.addClass(resizerClass + " " + resizerPaneClass); // add drag classes
                                    helperClassesSet = false; // reset logic var - see drag()

                                    // MASK PANES CONTAINING IFRAMES, APPLETS OR OTHER TROUBLESOME ELEMENTS
                                    showMasks(pane, {resizing: true});
                                }

                                , drag: function (e, ui) {
                                    if (!helperClassesSet) { // can only add classes after clone has been added to the DOM
                                        //$(".ui-draggable-dragging")
                                        ui.helper
                                            .addClass(helperClass + " " + helperPaneClass) // add helper classes
                                            .css({right: "auto", bottom: "auto"}) // fix dir="rtl" issue
                                            .children().css("visibility", "hidden") // hide toggler inside dragged resizer-bar
                                        ;
                                        helperClassesSet = true;
                                        // draggable bug!? RE-SET zIndex to prevent E/W resize-bar showing through N/S pane!
                                        if (s.isSliding)
                                            $Ps[pane].css("zIndex", z.pane_sliding);
                                    }
                                    // CONTAIN RESIZER-BAR TO RESIZING LIMITS
                                    var limit = 0;
                                    if (ui.position[side] < r.min) {
                                        ui.position[side] = r.min;
                                        limit = -1;
                                    } else if (ui.position[side] > r.max) {
                                        ui.position[side] = r.max;
                                        limit = 1;
                                    }
                                    // ADD/REMOVE dragging-limit CLASS
                                    if (limit) {
                                        ui.helper.addClass(helperLimitClass + " " + helperPaneLimitClass); // at dragging-limit
                                        window.defaultStatus = (limit > 0 && pane.match(/(north|west)/)) || (limit < 0 && pane.match(/(south|east)/)) ? o.tips.maxSizeWarning : o.tips.minSizeWarning;
                                    } else {
                                        ui.helper.removeClass(helperLimitClass + " " + helperPaneLimitClass); // not at dragging-limit
                                        window.defaultStatus = "";
                                    }
                                    // DYNAMICALLY RESIZE PANES IF OPTION ENABLED
                                    // won't trigger unless resizer has actually moved!
                                    if (live && Math.abs(ui.position[side] - lastPos) >= o.liveResizingTolerance) {
                                        lastPos = ui.position[side];
                                        resizePanes(e, ui, pane)
                                    }
                                }

                                , stop: function (e, ui) {
                                    $('body').enableSelection(); // RE-ENABLE TEXT SELECTION
                                    window.defaultStatus = ""; // clear 'resizing limit' message from statusbar
                                    $R.removeClass(resizerClass + " " + resizerPaneClass); // remove drag classes from Resizer
                                    s.isResizing = false;
                                    state.paneResizing = false; // easy to see if ANY pane is resizing
                                    resizePanes(e, ui, pane, true); // true = resizingDone
                                }

                            });
                        });

                        /**
                         * resizePanes
                         *
                         * Sub-routine called from stop() - and drag() if livePaneResizing
                         *
                         * @param {!Object}  evt
                         * @param {!Object}  ui
                         * @param {string}  pane
                         * @param {boolean=}  [resizingDone=false]
                         */
                        var resizePanes = function (evt, ui, pane, resizingDone) {
                            var dragPos = ui.position
                                , c = _c[pane]
                                , o = options[pane]
                                , s = state[pane]
                                , resizerPos
                            ;
                            switch (pane) {
                                case "north":
                                    resizerPos = dragPos.top;
                                    break;
                                case "west":
                                    resizerPos = dragPos.left;
                                    break;
                                case "south":
                                    resizerPos = sC.layoutHeight - dragPos.top - o.spacing_open;
                                    break;
                                case "east":
                                    resizerPos = sC.layoutWidth - dragPos.left - o.spacing_open;
                                    break;
                            }
                            // remove container margin from resizer position to get the pane size
                            var newSize = resizerPos - sC.inset[c.side];

                            // Disable OR Resize Mask(s) created in drag.start
                            if (!resizingDone) {
                                // ensure we meet liveResizingTolerance criteria
                                if (Math.abs(newSize - s.size) < o.liveResizingTolerance)
                                    return; // SKIP resize this time
                                // resize the pane
                                manualSizePane(pane, newSize, false, true); // true = noAnimation
                                sizeMasks(); // resize all visible masks
                            } else { // resizingDone
                                // ondrag_end callback
                                if (false !== _runCallbacks("ondrag_end", pane))
                                    manualSizePane(pane, newSize, false, true); // true = noAnimation
                                hideMasks(true); // true = force hiding all masks even if one is 'sliding'
                                if (s.isSliding) // RE-SHOW 'object-masks' so objects won't show through sliding pane
                                    showMasks(pane, {resizing: true});
                            }
                        };
                    }

                    /**
                     * sizeMask
                     *
                     * Needed to overlay a DIV over an IFRAME-pane because mask CANNOT be *inside* the pane
                     * Called when mask created, and during livePaneResizing
                     */
                    , sizeMask = function () {
                        var $M = $(this)
                            , pane = $M.data("layoutMask") // eg: "west"
                            , s = state[pane]
                        ;
                        // only masks over an IFRAME-pane need manual resizing
                        if (s.tagName == "IFRAME" && s.isVisible) // no need to mask closed/hidden panes
                            $M.css({
                                top: s.offsetTop
                                , left: s.offsetLeft
                                , width: s.outerWidth
                                , height: s.outerHeight
                            });
                        /* ALT Method...
             var $P = $Ps[pane];
             $M.css( $P.position() ).css({ width: $P[0].offsetWidth, height: $P[0].offsetHeight });
             */
                    }
                    , sizeMasks = function () {
                        $Ms.each(sizeMask); // resize all 'visible' masks
                    }

                    /**
                     * @param {string} pane  The pane being resized, animated or isSliding
                     * @param {Object=} [args]  (optional) Options: which masks to apply, and to which panes
                     */
                    , showMasks = function (pane, args) {
                        var c = _c[pane]
                            , panes = ["center"]
                            , z = options.zIndexes
                            , a = $.extend({
                                objectsOnly: false
                                , animation: false
                                , resizing: true
                                , sliding: state[pane].isSliding
                            }, args)
                            , o, s
                        ;
                        if (a.resizing)
                            panes.push(pane);
                        if (a.sliding)
                            panes.push(_c.oppositeEdge[pane]); // ADD the oppositeEdge-pane

                        if (c.dir === "horz") {
                            panes.push("west");
                            panes.push("east");
                        }

                        $.each(panes, function (i, p) {
                            s = state[p];
                            o = options[p];
                            if (s.isVisible && (o.maskObjects || (!a.objectsOnly && o.maskContents))) {
                                getMasks(p).each(function () {
                                    sizeMask.call(this);
                                    this.style.zIndex = s.isSliding ? z.pane_sliding + 1 : z.pane_normal + 1;
                                    this.style.display = "block";
                                });
                            }
                        });
                    }

                    /**
                     * @param {boolean=} force  Hide masks even if a pane is sliding
                     */
                    , hideMasks = function (force) {
                        // ensure no pane is resizing - could be a timing issue
                        if (force || !state.paneResizing) {
                            $Ms.hide(); // hide ALL masks
                        }
                        // if ANY pane is sliding, then DO NOT remove masks from panes with maskObjects enabled
                        else if (!force && !$.isEmptyObject(state.panesSliding)) {
                            var i = $Ms.length - 1
                                , p, $M;
                            for (; i >= 0; i--) {
                                $M = $Ms.eq(i);
                                p = $M.data("layoutMask");
                                if (!options[p].maskObjects) {
                                    $M.hide();
                                }
                            }
                        }
                    }

                    /**
                     * @param {string} pane
                     */
                    , getMasks = function (pane) {
                        var $Masks = $([])
                            , $M, i = 0, c = $Ms.length
                        ;
                        for (; i < c; i++) {
                            $M = $Ms.eq(i);
                            if ($M.data("layoutMask") === pane)
                                $Masks = $Masks.add($M);
                        }
                        if ($Masks.length)
                            return $Masks;
                        else
                            return createMasks(pane);
                    }

                    /**
                     * createMasks
                     *
                     * Generates both DIV (ALWAYS used) and IFRAME (optional) elements as masks
                     * An IFRAME mask is created *under* the DIV when maskObjects=true, because a DIV cannot mask an applet
                     *
                     * @param {string} pane
                     */
                    , createMasks = function (pane) {
                        var
                            $P = $Ps[pane]
                            , s = state[pane]
                            , o = options[pane]
                            , z = options.zIndexes
                            , isIframe, el, $M, css, i
                        ;
                        if (!o.maskContents && !o.maskObjects)
                            return $([]);
                        // if o.maskObjects=true, then loop TWICE to create BOTH kinds of mask, else only create a DIV
                        for (i = 0; i < (o.maskObjects ? 2 : 1); i++) {
                            isIframe = o.maskObjects && i == 0;
                            el = document.createElement(isIframe ? "iframe" : "div");
                            $M = $(el).data("layoutMask", pane); // add data to relate mask to pane
                            el.className = "ui-layout-mask ui-layout-mask-" + pane; // for user styling
                            css = el.style;
                            // Both DIVs and IFRAMES
                            css.background = "#FFF";
                            css.position = "absolute";
                            css.display = "block";
                            if (isIframe) { // IFRAME-only props
                                el.src = "about:blank";
                                el.frameborder = 0;
                                css.border = 0;
                                css.opacity = 0;
                                css.filter = "Alpha(Opacity='0')";
                                //el.allowTransparency = true; - for IE, but breaks masking ability!
                            } else { // DIV-only props
                                css.opacity = 0.001;
                                css.filter = "Alpha(Opacity='1')";
                            }
                            // if pane IS an IFRAME, then must mask the pane itself
                            if (s.tagName == "IFRAME") {
                                // NOTE sizing done by a subroutine so can be called during live-resizing
                                css.zIndex = z.pane_normal + 1; // 1-higher than pane
                                $N.append(el); // append to LAYOUT CONTAINER
                            }
                            // otherwise put masks *inside the pane* to mask its contents
                            else {
                                $M.addClass("ui-layout-mask-inside-pane");
                                css.zIndex = o.maskZindex || z.content_mask; // usually 1, but customizable
                                css.top = 0;
                                css.left = 0;
                                css.width = "100%";
                                css.height = "100%";
                                $P.append(el); // append INSIDE pane element
                            }
                            // add Mask to cached array so can be resized & reused
                            $Ms = $Ms.add(el);
                        }
                        return $Ms;
                    }


                    /**
                     * Destroy this layout and reset all elements
                     *
                     * @param {boolean=} [destroyChildren=false]  Destory Child-Layouts first?
                     */
                    , destroy = function (evt_or_destroyChildren, destroyChildren) {
                        // UNBIND layout events and remove global object
                        $(window).off("." + sID);  // resize & unload
                        $(document).off("." + sID); // keyDown (hotkeys)

                        if (typeof evt_or_destroyChildren === "object")
                            // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility
                            evtPane(evt_or_destroyChildren);
                        else // no event, so transfer 1st param to destroyChildren param
                            destroyChildren = evt_or_destroyChildren;

                        // need to look for parent layout BEFORE we remove the container data, else skips a level
                        //var parentPane = Instance.hasParentLayout ? $.layout.getParentPaneInstance( $N ) : null;

                        // reset layout-container
                        $N.clearQueue()
                            .removeData("layout")
                            .removeData("layoutContainer")
                            .removeClass(options.containerClass)
                            .off("." + sID) // remove ALL Layout events
                        ;

                        // remove all mask elements that have been created
                        $Ms.remove();

                        // loop all panes to remove layout classes, attributes and bindings
                        $.each(_c.allPanes, function (i, pane) {
                            removePane(pane, false, true, destroyChildren); // true = skipResize
                        });

                        // do NOT reset container CSS if is a 'pane' (or 'content') in an outer-layout - ie, THIS layout is 'nested'
                        var css = "layoutCSS";
                        if ($N.data(css) && !$N.data("layoutRole")) // RESET CSS
                            $N.css($N.data(css)).removeData(css);

                        // for full-page layouts, also reset the <HTML> CSS
                        if (sC.tagName === "BODY" && ($N = $("html")).data(css)) // RESET <HTML> CSS
                            $N.css($N.data(css)).removeData(css);

                        // trigger plugins for this layout, if there are any
                        runPluginCallbacks(Instance, $.layout.onDestroy);

                        // trigger state-management and onunload callback
                        unload();

                        // clear the Instance of everything except for container & options (so could recreate)
                        // RE-CREATE: myLayout = myLayout.container.layout( myLayout.options );
                        for (var n in Instance)
                            if (!n.match(/^(container|options)$/))
                                delete Instance[n];
                        // add a 'destroyed' flag to make it easy to check
                        Instance.destroyed = true;

                        // if this is a child layout, CLEAR the child-pointer in the parent
                        /* for now the pointer REMAINS, but with only container, options and destroyed keys
             if (parentPane) {
             var layout = parentPane.pane.data("parentLayout")
             , key  = layout.options.instanceKey || 'error';
             // THIS SYNTAX MAY BE WRONG!
             parentPane.children[key] = layout.children[ parentPane.name ].children[key] = null;
             }
             */

                        return Instance; // for coding convenience
                    }

                    /**
                     * Remove a pane from the layout - subroutine of destroy()
                     *
                     * @see  destroy()
                     * @param {(string|Object)} evt_or_pane   The pane to process
                     * @param {boolean=}   [remove=false]  Remove the DOM element?
                     * @param {boolean=}   [skipResize=false] Skip calling resizeAll()?
                     * @param {boolean=}   [destroyChild=true] Destroy Child-layouts? If not passed, obeys options setting
                     */
                    , removePane = function (evt_or_pane, remove, skipResize, destroyChild) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $P = $Ps[pane]
                            , $C = $Cs[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                        ;
                        // NOTE: elements can still exist even after remove()
                        //  so check for missing data(), which is cleared by removed()
                        if ($P && $.isEmptyObject($P.data()))
                            $P = false;
                        if ($C && $.isEmptyObject($C.data()))
                            $C = false;
                        if ($R && $.isEmptyObject($R.data()))
                            $R = false;
                        if ($T && $.isEmptyObject($T.data()))
                            $T = false;

                        if ($P)
                            $P.stop(true, true);

                        var o = options[pane]
                            , s = state[pane]
                            , d = "layout"
                            , css = "layoutCSS"
                            , pC = children[pane]
                            , hasChildren = $.isPlainObject(pC) && !$.isEmptyObject(pC)
                            , destroy = destroyChild !== undefined ? destroyChild : o.destroyChildren
                        ;
                        // FIRST destroy the child-layout(s)
                        if (hasChildren && destroy) {
                            $.each(pC, function (key, child) {
                                if (!child.destroyed)
                                    child.destroy(true);// tell child-layout to destroy ALL its child-layouts too
                                if (child.destroyed) // destroy was successful
                                    delete pC[key];
                            });
                            // if no more children, remove the children hash
                            if ($.isEmptyObject(pC)) {
                                pC = children[pane] = null; // clear children hash
                                hasChildren = false;
                            }
                        }

                        // Note: can't 'remove' a pane element with non-destroyed children
                        if ($P && remove && !hasChildren)
                            $P.remove(); // remove the pane-element and everything inside it
                        else if ($P && $P[0]) {
                            // create list of ALL pane-classes that need to be removed
                            var root = o.paneClass // default="ui-layout-pane"
                                , pRoot = root + "-" + pane // eg: "ui-layout-pane-west"
                                , _open = "-open"
                                , _sliding = "-sliding"
                                , _closed = "-closed"
                                , classes = [root, root + _open, root + _closed, root + _sliding, // generic classes
                                pRoot, pRoot + _open, pRoot + _closed, pRoot + _sliding] // pane-specific classes
                            ;
                            $.merge(classes, getHoverClasses($P, true)); // ADD hover-classes
                            // remove all Layout classes from pane-element
                            $P.removeClass(classes.join(" ")) // remove ALL pane-classes
                                .removeData("parentLayout")
                                .removeData("layoutPane")
                                .removeData("layoutRole")
                                .removeData("layoutEdge")
                                .removeData("autoHidden") // in case set
                                .off("." + sID) // remove ALL Layout events
                            // TODO: remove these extra unbind commands when jQuery is fixed
                            //.unbind("mouseenter"+ sID)
                            //.unbind("mouseleave"+ sID)
                            ;
                            // do NOT reset CSS if this pane/content is STILL the container of a nested layout!
                            // the nested layout will reset its 'container' CSS when/if it is destroyed
                            if (hasChildren && $C) {
                                // a content-div may not have a specific width, so give it one to contain the Layout
                                $C.width($C.width());
                                $.each(pC, function (key, child) {
                                    child.resizeAll(); // resize the Layout
                                });
                            } else if ($C)
                                $C.css($C.data(css)).removeData(css).removeData("layoutRole");
                            // remove pane AFTER content in case there was a nested layout
                            if (!$P.data(d))
                                $P.css($P.data(css)).removeData(css);
                        }

                        // REMOVE pane resizer and toggler elements
                        if ($T)
                            $T.remove();
                        if ($R)
                            $R.remove();

                        // CLEAR all pointers and state data
                        Instance[pane] = $Ps[pane] = $Cs[pane] = $Rs[pane] = $Ts[pane] = false;
                        s = {removed: true};

                        if (!skipResize)
                            resizeAll();
                    }


                    /*
         * ###########################
         *    ACTION METHODS
         * ###########################
         */

                    /**
                     * @param {string} pane
                     */
                    , _hidePane = function (pane) {
                        var $P = $Ps[pane]
                            , o = options[pane]
                            , s = $P[0].style
                        ;
                        if (o.useOffscreenClose) {
                            if (!$P.data(_c.offscreenReset))
                                $P.data(_c.offscreenReset, {left: s.left, right: s.right});
                            $P.css(_c.offscreenCSS);
                        } else
                            $P.hide().removeData(_c.offscreenReset);
                    }

                    /**
                     * @param {string} pane
                     */
                    , _showPane = function (pane) {
                        var $P = $Ps[pane]
                            , o = options[pane]
                            , off = _c.offscreenCSS
                            , old = $P.data(_c.offscreenReset)
                            , s = $P[0].style
                        ;
                        $P.show() // ALWAYS show, just in case
                            .removeData(_c.offscreenReset);
                        if (o.useOffscreenClose && old) {
                            if (s.left == off.left)
                                s.left = old.left;
                            if (s.right == off.right)
                                s.right = old.right;
                        }
                    }


                    /**
                     * Completely 'hides' a pane, including its spacing - as if it does not exist
                     * The pane is not actually 'removed' from the source, so can use 'show' to un-hide it
                     *
                     * @param {(string|Object)} evt_or_pane   The pane being hidden, ie: north, south, east, or west
                     * @param {boolean=}   [noAnimation=false]
                     */
                    , hide = function (evt_or_pane, noAnimation) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , o = options[pane]
                            , s = state[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                        ;
                        if (pane === "center" || !$P || s.isHidden)
                            return; // pane does not exist OR is already hidden

                        // onhide_start callback - will CANCEL hide if returns false
                        if (state.initialized && false === _runCallbacks("onhide_start", pane))
                            return;

                        s.isSliding = false; // just in case
                        delete state.panesSliding[pane];

                        // now hide the elements
                        if ($R)
                            $R.hide(); // hide resizer-bar
                        if (!state.initialized || s.isClosed) {
                            s.isClosed = true; // to trigger open-animation on show()
                            s.isHidden = true;
                            s.isVisible = false;
                            if (!state.initialized)
                                _hidePane(pane); // no animation when loading page
                            sizeMidPanes(_c[pane].dir === "horz" ? "" : "center");
                            if (state.initialized || o.triggerEventsOnLoad)
                                _runCallbacks("onhide_end", pane);
                        } else {
                            s.isHiding = true; // used by onclose
                            close(pane, false, noAnimation); // adjust all panes to fit
                        }
                    }

                    /**
                     * Show a hidden pane - show as 'closed' by default unless openPane = true
                     *
                     * @param {(string|Object)} evt_or_pane   The pane being opened, ie: north, south, east, or west
                     * @param {boolean=}   [openPane=false]
                     * @param {boolean=}   [noAnimation=false]
                     * @param {boolean=}   [noAlert=false]
                     */
                    , show = function (evt_or_pane, openPane, noAnimation, noAlert) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , o = options[pane]
                            , s = state[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                        ;
                        if (pane === "center" || !$P || !s.isHidden)
                            return; // pane does not exist OR is not hidden

                        // onshow_start callback - will CANCEL show if returns false
                        if (false === _runCallbacks("onshow_start", pane))
                            return;

                        s.isShowing = true; // used by onopen/onclose
                        //s.isHidden  = false; - will be set by open/close - if not cancelled
                        s.isSliding = false; // just in case
                        delete state.panesSliding[pane];

                        // now show the elements
                        //if ($R) $R.show(); - will be shown by open/close
                        if (openPane === false)
                            close(pane, true); // true = force
                        else
                            open(pane, false, noAnimation, noAlert); // adjust all panes to fit
                    }


                    /**
                     * Toggles a pane open/closed by calling either open or close
                     *
                     * @param {(string|Object)} evt_or_pane  The pane being toggled, ie: north, south, east, or west
                     * @param {boolean=}   [slide=false]
                     */
                    , toggle = function (evt_or_pane, slide) {
                        if (!isInitialized())
                            return;
                        var evt = evtObj(evt_or_pane)
                            , pane = evtPane.call(this, evt_or_pane)
                            , s = state[pane]
                        ;
                        if (evt) // called from to $R.dblclick OR triggerPaneEvent
                            evt.stopImmediatePropagation();
                        if (s.isHidden)
                            show(pane); // will call 'open' after unhiding it
                        else if (s.isClosed)
                            open(pane, !!slide);
                        else
                            close(pane);
                    }


                    /**
                     * Utility method used during init or other auto-processes
                     *
                     * @param {string} pane   The pane being closed
                     * @param {boolean=} [setHandles=false]
                     */
                    , _closePane = function (pane, setHandles) {
                        var
                            $P = $Ps[pane]
                            , s = state[pane]
                        ;
                        _hidePane(pane);
                        s.isClosed = true;
                        s.isVisible = false;
                        if (setHandles)
                            setAsClosed(pane);
                    }

                    /**
                     * Close the specified pane (animation optional), and resize all other panes as needed
                     *
                     * @param {(string|Object)} evt_or_pane   The pane being closed, ie: north, south, east, or west
                     * @param {boolean=}   [force=false]
                     * @param {boolean=}   [noAnimation=false]
                     * @param {boolean=}   [skipCallback=false]
                     */
                    , close = function (evt_or_pane, force, noAnimation, skipCallback) {
                        var pane = evtPane.call(this, evt_or_pane);
                        if (pane === "center")
                            return; // validate
                        // if pane has been initialized, but NOT the complete layout, close pane instantly
                        if (!state.initialized && $Ps[pane]) {
                            _closePane(pane, true); // INIT pane as closed
                            return;
                        }
                        if (!isInitialized())
                            return;

                        var
                            $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , doFX, isShowing, isHiding, wasSliding;

                        // QUEUE in case another action/animation is in progress
                        $N.queue(function (queueNext) {

                            if (!$P
                                || (!o.closable && !s.isShowing && !s.isHiding) // invalid request // (!o.resizable && !o.closable) ???
                                || (!force && s.isClosed && !s.isShowing)   // already closed
                            )
                                return queueNext();

                            // onclose_start callback - will CANCEL hide if returns false
                            // SKIP if just 'showing' a hidden pane as 'closed'
                            var abort = !s.isShowing && false === _runCallbacks("onclose_start", pane);

                            // transfer logic vars to temp vars
                            isShowing = s.isShowing;
                            isHiding = s.isHiding;
                            wasSliding = s.isSliding;
                            // now clear the logic vars (REQUIRED before aborting)
                            delete s.isShowing;
                            delete s.isHiding;

                            if (abort)
                                return queueNext();

                            doFX = !noAnimation && !s.isClosed && (o.fxName_close != "none");
                            s.isMoving = true;
                            s.isClosed = true;
                            s.isVisible = false;
                            // update isHidden BEFORE sizing panes
                            if (isHiding)
                                s.isHidden = true;
                            else if (isShowing)
                                s.isHidden = false;

                            if (s.isSliding) // pane is being closed, so UNBIND trigger events
                                bindStopSlidingEvents(pane, false); // will set isSliding=false
                            else // resize panes adjacent to this one
                                sizeMidPanes(_c[pane].dir === "horz" ? "" : "center", false); // false = NOT skipCallback

                            // if this pane has a resizer bar, move it NOW - before animation
                            setAsClosed(pane);

                            // CLOSE THE PANE
                            if (doFX) { // animate the close
                                lockPaneForFX(pane, true); // need to set left/top so animation will work
                                $P.hide(o.fxName_close, o.fxSettings_close, o.fxSpeed_close, function () {
                                    lockPaneForFX(pane, false); // undo
                                    if (s.isClosed)
                                        close_2();
                                    queueNext();
                                });
                            } else { // hide the pane without animation
                                _hidePane(pane);
                                close_2();
                                queueNext();
                            }
                        });

                        // SUBROUTINE
                        function close_2() {
                            s.isMoving = false;
                            bindStartSlidingEvents(pane, true); // will enable if o.slidable = true

                            // if opposite-pane was autoClosed, see if it can be autoOpened now
                            var altPane = _c.oppositeEdge[pane];
                            if (state[altPane].noRoom) {
                                setSizeLimits(altPane);
                                makePaneFit(altPane);
                            }

                            if (!skipCallback && (state.initialized || o.triggerEventsOnLoad)) {
                                // onclose callback - UNLESS just 'showing' a hidden pane as 'closed'
                                if (!isShowing)
                                    _runCallbacks("onclose_end", pane);
                                // onhide OR onshow callback
                                if (isShowing)
                                    _runCallbacks("onshow_end", pane);
                                if (isHiding)
                                    _runCallbacks("onhide_end", pane);
                            }
                        }
                    }

                    /**
                     * @param {string} pane The pane just closed, ie: north, south, east, or west
                     */
                    , setAsClosed = function (pane) {
                        if (!$Rs[pane])
                            return; // handles not initialized yet!
                        var
                            $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , side = _c[pane].side
                            , rClass = o.resizerClass
                            , tClass = o.togglerClass
                            , _pane = "-" + pane // used for classNames
                            , _open = "-open"
                            , _sliding = "-sliding"
                            , _closed = "-closed"
                        ;
                        $R
                            .css(side, sC.inset[side]) // move the resizer
                            .removeClass(rClass + _open + " " + rClass + _pane + _open)
                            .removeClass(rClass + _sliding + " " + rClass + _pane + _sliding)
                            .addClass(rClass + _closed + " " + rClass + _pane + _closed)
                        ;
                        // handle already-hidden panes in case called by swap() or a similar method
                        if (s.isHidden)
                            $R.hide(); // hide resizer-bar

                        // DISABLE 'resizing' when closed - do this BEFORE bindStartSlidingEvents?
                        if (o.resizable && $.layout.plugins.draggable)
                            $R
                                .draggable("disable")
                                .removeClass("ui-state-disabled") // do NOT apply disabled styling - not suitable here
                                .css("cursor", "default")
                                .attr("title", "")
                            ;

                        // if pane has a toggler button, adjust that too
                        if ($T) {
                            $T
                                .removeClass(tClass + _open + " " + tClass + _pane + _open)
                                .addClass(tClass + _closed + " " + tClass + _pane + _closed)
                                .attr("title", o.tips.Open) // may be blank
                            ;
                            // toggler-content - if exists
                            $T.children(".content-open").hide();
                            $T.children(".content-closed").css("display", "block");
                        }

                        // sync any 'pin buttons'
                        syncPinBtns(pane, false);

                        if (state.initialized) {
                            // resize 'length' and position togglers for adjacent panes
                            sizeHandles();
                        }
                    }

                    /**
                     * Open the specified pane (animation optional), and resize all other panes as needed
                     *
                     * @param {(string|Object)} evt_or_pane   The pane being opened, ie: north, south, east, or west
                     * @param {boolean=}   [slide=false]
                     * @param {boolean=}   [noAnimation=false]
                     * @param {boolean=}   [noAlert=false]
                     */
                    , open = function (evt_or_pane, slide, noAnimation, noAlert) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , doFX, isShowing
                        ;
                        if (pane === "center")
                            return; // validate
                        // QUEUE in case another action/animation is in progress
                        $N.queue(function (queueNext) {

                            if (!$P
                                || (!o.resizable && !o.closable && !s.isShowing) // invalid request
                                || (s.isVisible && !s.isSliding)     // already open
                            )
                                return queueNext();

                            // pane can ALSO be unhidden by just calling show(), so handle this scenario
                            if (s.isHidden && !s.isShowing) {
                                queueNext(); // call before show() because it needs the queue free
                                show(pane, true);
                                return;
                            }

                            if (s.autoResize && s.size != o.size) // resize pane to original size set in options
                                sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
                            else
                                // make sure there is enough space available to open the pane
                                setSizeLimits(pane, slide);

                            // onopen_start callback - will CANCEL open if returns false
                            var cbReturn = _runCallbacks("onopen_start", pane);

                            if (cbReturn === "abort")
                                return queueNext();

                            // update pane-state again in case options were changed in onopen_start
                            if (cbReturn !== "NC") // NC = "No Callback"
                                setSizeLimits(pane, slide);

                            if (s.minSize > s.maxSize) { // INSUFFICIENT ROOM FOR PANE TO OPEN!
                                syncPinBtns(pane, false); // make sure pin-buttons are reset
                                if (!noAlert && o.tips.noRoomToOpen)
                                    alert(o.tips.noRoomToOpen);
                                return queueNext(); // ABORT
                            }

                            if (slide) // START Sliding - will set isSliding=true
                                bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
                            else if (s.isSliding) // PIN PANE (stop sliding) - open pane 'normally' instead
                                bindStopSlidingEvents(pane, false); // UNBIND trigger events - will set isSliding=false
                            else if (o.slidable)
                                bindStartSlidingEvents(pane, false); // UNBIND trigger events

                            s.noRoom = false; // will be reset by makePaneFit if 'noRoom'
                            makePaneFit(pane);

                            // transfer logic var to temp var
                            isShowing = s.isShowing;
                            // now clear the logic var
                            delete s.isShowing;

                            doFX = !noAnimation && s.isClosed && (o.fxName_open != "none");
                            s.isMoving = true;
                            s.isVisible = true;
                            s.isClosed = false;
                            // update isHidden BEFORE sizing panes - WHY??? Old?
                            if (isShowing)
                                s.isHidden = false;

                            if (doFX) { // ANIMATE
                                // mask adjacent panes with objects
                                lockPaneForFX(pane, true); // need to set left/top so animation will work
                                $P.show(o.fxName_open, o.fxSettings_open, o.fxSpeed_open, function () {
                                    lockPaneForFX(pane, false); // undo
                                    if (s.isVisible)
                                        open_2(); // continue
                                    queueNext();
                                });
                            } else { // no animation
                                _showPane(pane);// just show pane and...
                                open_2();  // continue
                                queueNext();
                            }
                        });

                        // SUBROUTINE
                        function open_2() {
                            s.isMoving = false;

                            // cure iframe display issues
                            _fixIframe(pane);

                            // NOTE: if isSliding, then other panes are NOT 'resized'
                            if (!s.isSliding) { // resize all panes adjacent to this one
                                sizeMidPanes(_c[pane].dir == "vert" ? "center" : "", false); // false = NOT skipCallback
                            }

                            // set classes, position handles and execute callbacks...
                            setAsOpen(pane);
                        }
                    }

                    /**
                     * @param {string} pane  The pane just opened, ie: north, south, east, or west
                     * @param {boolean=} [skipCallback=false]
                     */
                    , setAsOpen = function (pane, skipCallback) {
                        var
                            $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , $T = $Ts[pane]
                            , o = options[pane]
                            , s = state[pane]
                            , side = _c[pane].side
                            , rClass = o.resizerClass
                            , tClass = o.togglerClass
                            , _pane = "-" + pane // used for classNames
                            , _open = "-open"
                            , _closed = "-closed"
                            , _sliding = "-sliding"
                        ;
                        $R
                            .css(side, sC.inset[side] + getPaneSize(pane)) // move the resizer
                            .removeClass(rClass + _closed + " " + rClass + _pane + _closed)
                            .addClass(rClass + _open + " " + rClass + _pane + _open)
                        ;
                        if (s.isSliding)
                            $R.addClass(rClass + _sliding + " " + rClass + _pane + _sliding);
                        else // in case 'was sliding'
                            $R.removeClass(rClass + _sliding + " " + rClass + _pane + _sliding);

                        removeHover(0, $R); // remove hover classes
                        if (o.resizable && $.layout.plugins.draggable)
                            $R.draggable("enable")
                                .css("cursor", o.resizerCursor)
                                .attr("title", o.tips.Resize);
                        else if (!s.isSliding)
                            $R.css("cursor", "default"); // n-resize, s-resize, etc

                        // if pane also has a toggler button, adjust that too
                        if ($T) {
                            $T.removeClass(tClass + _closed + " " + tClass + _pane + _closed)
                                .addClass(tClass + _open + " " + tClass + _pane + _open)
                                .attr("title", o.tips.Close); // may be blank
                            removeHover(0, $T); // remove hover classes
                            // toggler-content - if exists
                            $T.children(".content-closed").hide();
                            $T.children(".content-open").css("display", "block");
                        }

                        // sync any 'pin buttons'
                        syncPinBtns(pane, !s.isSliding);

                        // update pane-state dimensions - BEFORE resizing content
                        $.extend(s, elDims($P));

                        if (state.initialized) {
                            // resize resizer & toggler sizes for all panes
                            sizeHandles();
                            // resize content every time pane opens - to be sure
                            sizeContent(pane, true); // true = remeasure headers/footers, even if 'pane.isMoving'
                        }

                        if (!skipCallback && (state.initialized || o.triggerEventsOnLoad) && $P.is(":visible")) {
                            // onopen callback
                            _runCallbacks("onopen_end", pane);
                            // onshow callback - TODO: should this be here?
                            if (s.isShowing)
                                _runCallbacks("onshow_end", pane);

                            // ALSO call onresize because layout-size *may* have changed while pane was closed
                            if (state.initialized)
                                _runCallbacks("onresize_end", pane);
                        }

                        // TODO: Somehow sizePane("north") is being called after this point???
                    }


                    /**
                     * slideOpen / slideClose / slideToggle
                     *
                     * Pass-though methods for sliding
                     */
                    , slideOpen = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var evt = evtObj(evt_or_pane)
                            , pane = evtPane.call(this, evt_or_pane)
                            , s = state[pane]
                            , delay = options[pane].slideDelay_open
                        ;
                        if (pane === "center")
                            return; // validate
                        // prevent event from triggering on NEW resizer binding created below
                        if (evt)
                            evt.stopImmediatePropagation();

                        if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
                            // trigger = mouseenter - use a delay
                            timer.set(pane + "_openSlider", open_NOW, delay);
                        else
                            open_NOW(); // will unbind events if is already open

                        /**
                         * SUBROUTINE for timed open
                         */
                        function open_NOW() {
                            if (!s.isClosed) // skip if no longer closed!
                                bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
                            else if (!s.isMoving)
                                open(pane, true); // true = slide - open() will handle binding
                        }
                    }

                    , slideClose = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var evt = evtObj(evt_or_pane)
                            , pane = evtPane.call(this, evt_or_pane)
                            , o = options[pane]
                            , s = state[pane]
                            , delay = s.isMoving ? 1000 : 300 // MINIMUM delay - option may override
                        ;
                        if (pane === "center")
                            return; // validate
                        if (s.isClosed || s.isResizing) {
                            // skip if already closed OR in process of resizing
                        }
                        else if (o.slideTrigger_close === "click")
                            close_NOW(); // close immediately onClick
                        else if (o.preventQuickSlideClose && s.isMoving) {
                            // handle Chrome quick-close on slide-open
                        }
                        else if (o.preventPrematureSlideClose && evt && $.layout.isMouseOverElem(evt, $Ps[pane])) {
                            // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
                        }
                        else if (evt) // trigger = mouseleave - use a delay
                            // 1 sec delay if 'opening', else .3 sec
                            timer.set(pane + "_closeSlider", close_NOW, max(o.slideDelay_close, delay));
                        else // called programically
                            close_NOW();

                        /**
                         * SUBROUTINE for timed close
                         */
                        function close_NOW() {
                            if (s.isClosed) // skip 'close' if already closed!
                                bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
                            else if (!s.isMoving)
                                close(pane); // close will handle unbinding
                        }
                    }

                    /**
                     * @param {(string|Object)} evt_or_pane  The pane being opened, ie: north, south, east, or west
                     */
                    , slideToggle = function (evt_or_pane) {
                        var pane = evtPane.call(this, evt_or_pane);
                        toggle(pane, true);
                    }


                    /**
                     * Must set left/top on East/South panes so animation will work properly
                     *
                     * @param {string} pane The pane to lock, 'east' or 'south' - any other is ignored!
                     * @param {boolean} doLock  true = set left/top, false = remove
                     */
                    , lockPaneForFX = function (pane, doLock) {
                        var $P = $Ps[pane]
                            , s = state[pane]
                            , o = options[pane]
                            , z = options.zIndexes
                        ;
                        if (doLock) {
                            showMasks(pane, {animation: true, objectsOnly: true});
                            $P.css({zIndex: z.pane_animate}); // overlay all elements during animation
                            if (pane == "south")
                                $P.css({top: sC.inset.top + sC.innerHeight - $P.outerHeight()});
                            else if (pane == "east")
                                $P.css({left: sC.inset.left + sC.innerWidth - $P.outerWidth()});
                        } else { // animation DONE - RESET CSS
                            hideMasks();
                            $P.css({zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)});
                            if (pane == "south")
                                $P.css({top: "auto"});
                            // if pane is positioned 'off-screen', then DO NOT screw with it!
                            else if (pane == "east" && !$P.css("left").match(/\-99999/))
                                $P.css({left: "auto"});
                            // fix anti-aliasing in IE - only needed for animations that change opacity
                            if (browser.msie && o.fxOpacityFix && o.fxName_open != "slide" && $P.css("filter") && $P.css("opacity") == 1)
                                $P[0].style.removeAttribute('filter');
                        }
                    }


                    /**
                     * Toggle sliding functionality of a specific pane on/off by adding removing 'slide open' trigger
                     *
                     * @see  open(), close()
                     * @param {string} pane The pane to enable/disable, 'north', 'south', etc.
                     * @param {boolean} enable Enable or Disable sliding?
                     */
                    , bindStartSlidingEvents = function (pane, enable) {
                        var o = options[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , evtName = o.slideTrigger_open.toLowerCase()
                        ;
                        if (!$R || (enable && !o.slidable))
                            return;

                        // make sure we have a valid event
                        if (evtName.match(/mouseover/))
                            evtName = o.slideTrigger_open = "mouseenter";
                        else if (!evtName.match(/(click|dblclick|mouseenter)/))
                            evtName = o.slideTrigger_open = "click";

                        // must remove double-click-toggle when using dblclick-slide
                        if (o.resizerDblClickToggle && evtName.match(/click/)) {
                            $R[enable ? "off" : "on"]('dblclick.' + sID, toggle)
                        }

                        $R
                            // add or remove event
                            [enable ? "on" : "off"](evtName + '.' + sID, slideOpen)
                            // set the appropriate cursor & title/tip
                            .css("cursor", enable ? o.sliderCursor : "default")
                            .attr("title", enable ? o.tips.Slide : "")
                        ;
                    }

                    /**
                     * Add or remove 'mouseleave' events to 'slide close' when pane is 'sliding' open or closed
                     * Also increases zIndex when pane is sliding open
                     * See bindStartSlidingEvents for code to control 'slide open'
                     *
                     * @see  slideOpen(), slideClose()
                     * @param {string} pane The pane to process, 'north', 'south', etc.
                     * @param {boolean} enable Enable or Disable events?
                     */
                    , bindStopSlidingEvents = function (pane, enable) {
                        var o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , z = options.zIndexes
                            , evtName = o.slideTrigger_close.toLowerCase()
                            , action = (enable ? "on" : "off")
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                        ;
                        timer.clear(pane + "_closeSlider"); // just in case

                        if (enable) {
                            s.isSliding = true;
                            state.panesSliding[pane] = true;
                            // remove 'slideOpen' event from resizer
                            // ALSO will raise the zIndex of the pane & resizer
                            bindStartSlidingEvents(pane, false);
                        } else {
                            s.isSliding = false;
                            delete state.panesSliding[pane];
                        }

                        // RE/SET zIndex - increases when pane is sliding-open, resets to normal when not
                        $P.css("zIndex", enable ? z.pane_sliding : z.pane_normal);
                        $R.css("zIndex", enable ? z.pane_sliding + 2 : z.resizer_normal); // NOTE: mask = pane_sliding+1

                        // make sure we have a valid event
                        if (!evtName.match(/(click|mouseleave)/))
                            evtName = o.slideTrigger_close = "mouseleave"; // also catches 'mouseout'

                        // add/remove slide triggers
                        $R[action](evtName, slideClose); // base event on resize
                        // need extra events for mouseleave
                        if (evtName === "mouseleave") {
                            // also close on pane.mouseleave
                            $P[action]("mouseleave." + sID, slideClose);
                            // cancel timer when mouse moves between 'pane' and 'resizer'
                            $R[action]("mouseenter." + sID, cancelMouseOut);
                            $P[action]("mouseenter." + sID, cancelMouseOut);
                        }

                        if (!enable)
                            timer.clear(pane + "_closeSlider");
                        else if (evtName === "click" && !o.resizable) {
                            // IF pane is not resizable (which already has a cursor and tip)
                            // then set the a cursor & title/tip on resizer when sliding
                            $R.css("cursor", enable ? o.sliderCursor : "default");
                            $R.attr("title", enable ? o.tips.Close : ""); // use Toggler-tip, eg: "Close Pane"
                        }

                        // SUBROUTINE for mouseleave timer clearing
                        function cancelMouseOut(evt) {
                            timer.clear(pane + "_closeSlider");
                            evt.stopPropagation();
                        }
                    }


                    /**
                     * Hides/closes a pane if there is insufficient room - reverses this when there is room again
                     * MUST have already called setSizeLimits() before calling this method
                     *
                     * @param {string} pane     The pane being resized
                     * @param {boolean=} [isOpening=false]  Called from onOpen?
                     * @param {boolean=} [skipCallback=false] Should the onresize callback be run?
                     * @param {boolean=} [force=false]
                     */
                    , makePaneFit = function (pane, isOpening, skipCallback, force) {
                        var o = options[pane]
                            , s = state[pane]
                            , c = _c[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , isSidePane = c.dir === "vert"
                            , hasRoom = false
                        ;
                        // special handling for center & east/west panes
                        if (pane === "center" || (isSidePane && s.noVerticalRoom)) {
                            // see if there is enough room to display the pane
                            // ERROR: hasRoom = s.minHeight <= s.maxHeight && (isSidePane || s.minWidth <= s.maxWidth);
                            hasRoom = (s.maxHeight >= 0);
                            if (hasRoom && s.noRoom) { // previously hidden due to noRoom, so show now
                                _showPane(pane);
                                if ($R)
                                    $R.show();
                                s.isVisible = true;
                                s.noRoom = false;
                                if (isSidePane)
                                    s.noVerticalRoom = false;
                                _fixIframe(pane);
                            } else if (!hasRoom && !s.noRoom) { // not currently hidden, so hide now
                                _hidePane(pane);
                                if ($R)
                                    $R.hide();
                                s.isVisible = false;
                                s.noRoom = true;
                            }
                        }

                        // see if there is enough room to fit the border-pane
                        if (pane === "center") {
                            // ignore center in this block
                        } else if (s.minSize <= s.maxSize) { // pane CAN fit
                            hasRoom = true;
                            if (s.size > s.maxSize) // pane is too big - shrink it
                                sizePane(pane, s.maxSize, skipCallback, true, force); // true = noAnimation
                            else if (s.size < s.minSize) // pane is too small - enlarge it
                                sizePane(pane, s.minSize, skipCallback, true, force); // true = noAnimation
                            // need s.isVisible because new pseudoClose method keeps pane visible, but off-screen
                            else if ($R && s.isVisible && $P.is(":visible")) {
                                // make sure resizer-bar is positioned correctly
                                // handles situation where nested layout was 'hidden' when initialized
                                var pos = s.size + sC.inset[c.side];
                                if ($.layout.cssNum($R, c.side) != pos)
                                    $R.css(c.side, pos);
                            }

                            // if was previously hidden due to noRoom, then RESET because NOW there is room
                            if (s.noRoom) {
                                // s.noRoom state will be set by open or show
                                if (s.wasOpen && o.closable) {
                                    if (o.autoReopen)
                                        open(pane, false, true, true); // true = noAnimation, true = noAlert
                                    else // leave the pane closed, so just update state
                                        s.noRoom = false;
                                } else
                                    show(pane, s.wasOpen, true, true); // true = noAnimation, true = noAlert
                            }
                        } else { // !hasRoom - pane CANNOT fit
                            if (!s.noRoom) { // pane not set as noRoom yet, so hide or close it now...
                                s.noRoom = true; // update state
                                s.wasOpen = !s.isClosed && !s.isSliding;
                                if (s.isClosed) {
                                } // SKIP
                                else if (o.closable) // 'close' if possible
                                    close(pane, true, true); // true = force, true = noAnimation
                                else // 'hide' pane if cannot just be closed
                                    hide(pane, true); // true = noAnimation
                            }
                        }
                    }


                    /**
                     * manualSizePane is an exposed flow-through method allowing extra code when pane is 'manually resized'
                     *
                     * @param {(string|Object)} evt_or_pane    The pane being resized
                     * @param {number}   size     The *desired* new size for this pane - will be validated
                     * @param {boolean=}   [skipCallback=false] Should the onresize callback be run?
                     * @param {boolean=}   [noAnimation=false]
                     * @param {boolean=}   [force=false]   Force resizing even if does not seem necessary
                     */
                    , manualSizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , o = options[pane]
                            , s = state[pane]
                            // if resizing callbacks have been delayed and resizing is now DONE, force resizing to complete...
                            , forceResize = force || (o.livePaneResizing && !s.isResizing)
                        ;
                        if (pane === "center")
                            return; // validate
                        // ANY call to manualSizePane disables autoResize - ie, percentage sizing
                        s.autoResize = false;
                        // flow-through...
                        sizePane(pane, size, skipCallback, noAnimation, forceResize); // will animate resize if option enabled
                    }

                    /**
                     * sizePane is called only by internal methods whenever a pane needs to be resized
                     *
                     * @param {(string|Object)} evt_or_pane    The pane being resized
                     * @param {number}   size     The *desired* new size for this pane - will be validated
                     * @param {boolean=}   [skipCallback=false] Should the onresize callback be run?
                     * @param {boolean=}   [noAnimation=false]
                     * @param {boolean=}   [force=false]   Force resizing even if does not seem necessary
                     */
                    , sizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane) // probably NEVER called from event?
                            , o = options[pane]
                            , s = state[pane]
                            , $P = $Ps[pane]
                            , $R = $Rs[pane]
                            , side = _c[pane].side
                            , dimName = _c[pane].sizeType.toLowerCase()
                            , skipResizeWhileDragging = s.isResizing && !o.triggerEventsDuringLiveResize
                            , doFX = noAnimation !== true && o.animatePaneSizing
                            , oldSize, newSize
                        ;
                        if (pane === "center")
                            return; // validate
                        // QUEUE in case another action/animation is in progress
                        $N.queue(function (queueNext) {
                            // calculate 'current' min/max sizes
                            setSizeLimits(pane); // update pane-state
                            oldSize = s.size;
                            size = _parseSize(pane, size); // handle percentages & auto
                            size = max(size, _parseSize(pane, o.minSize));
                            size = min(size, s.maxSize);
                            if (size < s.minSize) { // not enough room for pane!
                                queueNext(); // call before makePaneFit() because it needs the queue free
                                makePaneFit(pane, false, skipCallback); // will hide or close pane
                                return;
                            }

                            // IF newSize is same as oldSize, then nothing to do - abort
                            if (!force && size === oldSize)
                                return queueNext();

                            s.newSize = size;

                            // onresize_start callback CANNOT cancel resizing because this would break the layout!
                            if (!skipCallback && state.initialized && s.isVisible)
                                _runCallbacks("onresize_start", pane);

                            // resize the pane, and make sure its visible
                            newSize = cssSize(pane, size);

                            if (doFX && $P.is(":visible")) { // ANIMATE
                                var fx = $.layout.effects.size[pane] || $.layout.effects.size.all
                                    , easing = o.fxSettings_size.easing || fx.easing
                                    , z = options.zIndexes
                                    , props = {};
                                props[dimName] = newSize + 'px';
                                s.isMoving = true;
                                // overlay all elements during animation
                                $P.css({zIndex: z.pane_animate})
                                    .show().animate(props, o.fxSpeed_size, easing, function () {
                                    // reset zIndex after animation
                                    $P.css({zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal)});
                                    s.isMoving = false;
                                    delete s.newSize;
                                    sizePane_2(); // continue
                                    queueNext();
                                });
                            } else { // no animation
                                $P.css(dimName, newSize); // resize pane
                                delete s.newSize;
                                // if pane is visible, then
                                if ($P.is(":visible"))
                                    sizePane_2(); // continue
                                else {
                                    // pane is NOT VISIBLE, so just update state data...
                                    // when pane is *next opened*, it will have the new size
                                    s.size = size;    // update state.size
                                    //$.extend(s, elDims($P)); // update state dimensions - CANNOT do this when not visible!    }
                                }
                                queueNext();
                            }
                        });

                        // SUBROUTINE
                        function sizePane_2() {
                            /* Panes are sometimes not sized precisely in some browsers!?
                 * This code will resize the pane up to 3 times to nudge the pane to the correct size
                 */
                            var actual = dimName === 'width' ? $P.outerWidth() : $P.outerHeight()
                                , tries = [{
                                    pane: pane
                                    , count: 1
                                    , target: size
                                    , actual: actual
                                    , correct: (size === actual)
                                    , attempt: size
                                    , cssSize: newSize
                                }]
                                , lastTry = tries[0]
                                , thisTry = {}
                                , msg = 'Inaccurate size after resizing the ' + pane + '-pane.'
                            ;
                            while (!lastTry.correct) {
                                thisTry = {pane: pane, count: lastTry.count + 1, target: size};

                                if (lastTry.actual > size)
                                    thisTry.attempt = max(0, lastTry.attempt - (lastTry.actual - size));
                                else // lastTry.actual < size
                                    thisTry.attempt = max(0, lastTry.attempt + (size - lastTry.actual));

                                thisTry.cssSize = cssSize(pane, thisTry.attempt);
                                $P.css(dimName, thisTry.cssSize);

                                thisTry.actual = dimName == 'width' ? $P.outerWidth() : $P.outerHeight();
                                thisTry.correct = (size === thisTry.actual);

                                // log attempts and alert the user of this *non-fatal error* (if showDebugMessages)
                                if (tries.length === 1) {
                                    _log(msg, false, true);
                                    _log(lastTry, false, true);
                                }
                                _log(thisTry, false, true);
                                // after 4 tries, is as close as its gonna get!
                                if (tries.length > 3)
                                    break;

                                tries.push(thisTry);
                                lastTry = tries[tries.length - 1];
                            }
                            // END TESTING CODE

                            // update pane-state dimensions
                            s.size = size;
                            $.extend(s, elDims($P));

                            if (s.isVisible && $P.is(":visible")) {
                                // reposition the resizer-bar
                                if ($R)
                                    $R.css(side, size + sC.inset[side]);
                                // resize the content-div
                                sizeContent(pane);
                            }

                            if (!skipCallback && !skipResizeWhileDragging && state.initialized && s.isVisible)
                                _runCallbacks("onresize_end", pane);

                            // resize all the adjacent panes, and adjust their toggler buttons
                            // when skipCallback passed, it means the controlling method will handle 'other panes'
                            if (!skipCallback) {
                                // also no callback if live-resize is in progress and NOT triggerEventsDuringLiveResize
                                if (!s.isSliding)
                                    sizeMidPanes(_c[pane].dir == "horz" ? "" : "center", skipResizeWhileDragging, force);
                                sizeHandles();
                            }

                            // if opposite-pane was autoClosed, see if it can be autoOpened now
                            var altPane = _c.oppositeEdge[pane];
                            if (size < oldSize && state[altPane].noRoom) {
                                setSizeLimits(altPane);
                                makePaneFit(altPane, false, skipCallback);
                            }

                            // DEBUG - ALERT user/developer so they know there was a sizing problem
                            if (tries.length > 1)
                                _log(msg + '\nSee the Error Console for details.', true, true);
                        }
                    }

                    /**
                     * @see  initPanes(), sizePane(),  resizeAll(), open(), close(), hide()
                     * @param {(Array.<string>|string)} panes     The pane(s) being resized, comma-delmited string
                     * @param {boolean=}     [skipCallback=false] Should the onresize callback be run?
                     * @param {boolean=}     [force=false]
                     */
                    , sizeMidPanes = function (panes, skipCallback, force) {
                        panes = (panes ? panes : "east,west,center").split(",");

                        $.each(panes, function (i, pane) {
                            if (!$Ps[pane])
                                return; // NO PANE - skip
                            var
                                o = options[pane]
                                , s = state[pane]
                                , $P = $Ps[pane]
                                , $R = $Rs[pane]
                                , isCenter = (pane == "center")
                                , hasRoom = true
                                , CSS = {}
                                // if pane is not visible, show it invisibly NOW rather than for *each call* in this script
                                , visCSS = $.layout.showInvisibly($P)

                                , newCenter = calcNewCenterPaneDims()
                            ;

                            // update pane-state dimensions
                            $.extend(s, elDims($P));

                            if (pane === "center") {
                                if (!force && s.isVisible && newCenter.width === s.outerWidth && newCenter.height === s.outerHeight) {
                                    $P.css(visCSS);
                                    return true; // SKIP - pane already the correct size
                                }
                                // set state for makePaneFit() logic
                                $.extend(s, cssMinDims(pane), {
                                    maxWidth: newCenter.width
                                    , maxHeight: newCenter.height
                                });
                                CSS = newCenter;
                                s.newWidth = CSS.width;
                                s.newHeight = CSS.height;
                                // convert OUTER width/height to CSS width/height
                                CSS.width = cssW($P, CSS.width);
                                // NEW - allow pane to extend 'below' visible area rather than hide it
                                CSS.height = cssH($P, CSS.height);
                                hasRoom = CSS.width >= 0 && CSS.height >= 0; // height >= 0 = ALWAYS TRUE NOW

                                // during layout init, try to shrink east/west panes to make room for center
                                if (!state.initialized && o.minWidth > newCenter.width) {
                                    var
                                        reqPx = o.minWidth - s.outerWidth
                                        , minE = options.east.minSize || 0
                                        , minW = options.west.minSize || 0
                                        , sizeE = state.east.size
                                        , sizeW = state.west.size
                                        , newE = sizeE
                                        , newW = sizeW
                                    ;
                                    if (reqPx > 0 && state.east.isVisible && sizeE > minE) {
                                        newE = max(sizeE - minE, sizeE - reqPx);
                                        reqPx -= sizeE - newE;
                                    }
                                    if (reqPx > 0 && state.west.isVisible && sizeW > minW) {
                                        newW = max(sizeW - minW, sizeW - reqPx);
                                        reqPx -= sizeW - newW;
                                    }
                                    // IF we found enough extra space, then resize the border panes as calculated
                                    if (reqPx === 0) {
                                        if (sizeE && sizeE != minE)
                                            sizePane('east', newE, true, true, force); // true = skipCallback/noAnimation - initPanes will handle when done
                                        if (sizeW && sizeW != minW)
                                            sizePane('west', newW, true, true, force); // true = skipCallback/noAnimation
                                        // now start over!
                                        sizeMidPanes('center', skipCallback, force);
                                        $P.css(visCSS);
                                        return; // abort this loop
                                    }
                                }
                            } else { // for east and west, set only the height, which is same as center height
                                // set state.min/maxWidth/Height for makePaneFit() logic
                                if (s.isVisible && !s.noVerticalRoom)
                                    $.extend(s, elDims($P), cssMinDims(pane));
                                if (!force && !s.noVerticalRoom && newCenter.height === s.outerHeight) {
                                    $P.css(visCSS);
                                    return true; // SKIP - pane already the correct size
                                }
                                // east/west have same top, bottom & height as center
                                CSS.top = newCenter.top;
                                CSS.bottom = newCenter.bottom;
                                s.newSize = newCenter.height;
                                // NEW - allow pane to extend 'below' visible area rather than hide it
                                CSS.height = cssH($P, newCenter.height);
                                s.maxHeight = CSS.height;
                                hasRoom = (s.maxHeight >= 0); // ALWAYS TRUE NOW
                                if (!hasRoom)
                                    s.noVerticalRoom = true; // makePaneFit() logic
                            }

                            if (hasRoom) {
                                // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
                                if (!skipCallback && state.initialized)
                                    _runCallbacks("onresize_start", pane);

                                $P.css(CSS); // apply the CSS to pane
                                if (pane !== "center")
                                    sizeHandles(pane); // also update resizer length
                                if (s.noRoom && !s.isClosed && !s.isHidden)
                                    makePaneFit(pane); // will re-open/show auto-closed/hidden pane
                                if (s.isVisible) {
                                    $.extend(s, elDims($P)); // update pane dimensions
                                    if (state.initialized)
                                        sizeContent(pane); // also resize the contents, if exists
                                }
                            } else if (!s.noRoom && s.isVisible) // no room for pane
                                makePaneFit(pane); // will hide or close pane

                            // reset visibility, if necessary
                            $P.css(visCSS);

                            delete s.newSize;
                            delete s.newWidth;
                            delete s.newHeight;

                            if (!s.isVisible)
                                return true; // DONE - next pane

                            /*
                 * Extra CSS for IE6 or IE7 in Quirks-mode - add 'width' to NORTH/SOUTH panes
                 * Normally these panes have only 'left' & 'right' positions so pane auto-sizes
                 * ALSO required when pane is an IFRAME because will NOT default to 'full width'
                 * TODO: Can I use width:100% for a north/south iframe?
                 * TODO: Sounds like a job for $P.outerWidth( sC.innerWidth ) SETTER METHOD
                 */
                            if (pane === "center") { // finished processing midPanes
                                var fix = browser.isIE6 || !browser.boxModel;
                                if ($Ps.north && (fix || state.north.tagName == "IFRAME"))
                                    $Ps.north.css("width", cssW($Ps.north, sC.innerWidth));
                                if ($Ps.south && (fix || state.south.tagName == "IFRAME"))
                                    $Ps.south.css("width", cssW($Ps.south, sC.innerWidth));
                            }

                            // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
                            if (!skipCallback && state.initialized)
                                _runCallbacks("onresize_end", pane);
                        });
                    }


                    /**
                     * @see  window.onresize(), callbacks or custom code
                     * @param {(Object|boolean)=} evt_or_refresh If 'true', then also reset pane-positioning
                     */
                    , resizeAll = function (evt_or_refresh) {
                        var oldW = sC.innerWidth
                            , oldH = sC.innerHeight
                        ;
                        // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility
                        evtPane(evt_or_refresh);

                        // cannot size layout when 'container' is hidden or collapsed
                        if (!$N.is(":visible"))
                            return;

                        if (!state.initialized) {
                            _initLayoutElements();
                            return; // no need to resize since we just initialized!
                        }

                        if (evt_or_refresh === true && $.isPlainObject(options.outset)) {
                            // update container CSS in case outset option has changed
                            $N.css(options.outset);
                        }
                        // UPDATE container dimensions
                        $.extend(sC, elDims($N, options.inset));
                        if (!sC.outerHeight)
                            return;

                        // if 'true' passed, refresh pane & handle positioning too
                        if (evt_or_refresh === true) {
                            setPanePosition();
                        }

                        // onresizeall_start will CANCEL resizing if returns false
                        // state.container has already been set, so user can access this info for calcuations
                        if (false === _runCallbacks("onresizeall_start"))
                            return false;

                        var // see if container is now 'smaller' than before
                            shrunkH = (sC.innerHeight < oldH)
                            , shrunkW = (sC.innerWidth < oldW)
                            , $P, o, s
                        ;

                        var shrunk = shrunkH || shrunkW;

                        // NOTE special order for sizing: S-N-E-W
                        $.each(["south", "north", "east", "west"], function (i, pane) {
                            if (!$Ps[pane])
                                return; // no pane - SKIP
                            o = options[pane];
                            s = state[pane];

                            var paneResponsive = false;
                            var paneRespondedState = false;
                            var windowWidth = $(window).width();

                            if ((o !== null && o !== 'undefined') && o.responsive && o.responsive.enabled) {
                                //if(s.size >= o.responsive.sizes.lg)
                                if (windowWidth >= o.responsive.sizes.lg)
                                    if (o.responsive.when === 'lg' || o.responsive.when === 'md' || o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                        paneResponsive = false;
                                    } else {
                                        paneResponsive = true;
                                    }

                                //if(s.size >= o.responsive.sizes.md)
                                if (windowWidth >= o.responsive.sizes.md && windowWidth < o.responsive.sizes.lg)
                                    if (o.responsive.when === 'md' || o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                        paneResponsive = false;
                                    } else {
                                        paneResponsive = true; //hide
                                    }

                                if (windowWidth >= o.responsive.sizes.sm && windowWidth < o.responsive.sizes.md)
                                    //if(s.size >= o.responsive.sizes.sm)
                                    if (o.responsive.when === 'sm' || o.responsive.when === 'xs') {
                                        paneResponsive = false;
                                    } else {
                                        paneResponsive = true; //hide
                                    }

                                //if(s.size >= o.responsive.sizes.xs)
                                if (windowWidth >= o.responsive.sizes.xs && windowWidth < o.responsive.sizes.sm)
                                    if (o.responsive.when === 'xs') {
                                        paneResponsive = false;
                                    } else {
                                        paneResponsive = true; //hide
                                    }
                            }
                            if (s.autoResize && s.size !== o.size) // resize pane to original size set in options
                            {
                                if (paneResponsive && s.isVisible) {
                                    if (o.closable) {
                                        close(pane, true, !o.responsiveAnimate); // true = force, true = noAnimation
                                    } else {
                                        hide(pane, !o.responsiveAnimate); // true = noAnimation
                                    }
                                    s.responded = true;
                                } else {
                                    if (s.responded) {
                                        if (o.closable) {
                                            open(pane, false, !o.responsiveAnimate); // true = force, true = noAnimation
                                        } else {
                                            show(pane, true, !o.responsiveAnimate); // true = open/NoAnimation/NoAlert
                                        }
                                        s.responded = false;
                                    }
                                }
                                sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
                            } else {
                                setSizeLimits(pane);
                                if (paneResponsive) {
                                    if (o.closable) {
                                        close(pane, true, !o.responsiveAnimate); // true = force, true = noAnimation
                                    } else {
                                        hide(pane, !o.responsiveAnimate); // true = noAnimation
                                    }
                                    s.responded = true;
                                } else {
                                    if (s.responded) {
                                        if (o.closable) {
                                            open(pane, false, !o.responsiveAnimate); // true = force, true = noAnimation
                                        } else {
                                            show(pane, true, !o.responsiveAnimate); // true = open/NoAnimation/NoAlert
                                        }
                                        s.responded = false;
                                    }
                                }
                                makePaneFit(pane, false, true, true); // true=skipCallback/forceResize
                            }
                        });

                        sizeMidPanes("", true, true); // true=skipCallback/forceResize
                        sizeHandles(); // reposition the toggler elements

                        // trigger all individual pane callbacks AFTER layout has finished resizing
                        $.each(_c.allPanes, function (i, pane) {
                            $P = $Ps[pane];
                            if (!$P)
                                return; // SKIP
                            if (state[pane].isVisible) // undefined for non-existent panes
                                _runCallbacks("onresize_end", pane); // callback - if exists
                        });


                        _runCallbacks("onresizeall_end");
                        //_triggerLayoutEvent(pane, 'resizeall');
                    }

                    /**
                     * Whenever a pane resizes or opens that has a nested layout, trigger resizeAll
                     *
                     * @param {(string|Object)} evt_or_pane  The pane just resized or opened
                     */
                    , resizeChildren = function (evt_or_pane, skipRefresh) {
                        var pane = evtPane.call(this, evt_or_pane);

                        if (!options[pane].resizeChildren)
                            return;

                        // ensure the pane-children are up-to-date
                        if (!skipRefresh)
                            refreshChildren(pane);
                        var pC = children[pane];
                        if ($.isPlainObject(pC)) {
                            // resize one or more children
                            $.each(pC, function (key, child) {
                                if (!child.destroyed)
                                    child.resizeAll();
                            });
                        }
                    }

                    /**
                     * IF pane has a content-div, then resize all elements inside pane to fit pane-height
                     *
                     * @param {(string|Object)} evt_or_panes  The pane(s) being resized
                     * @param {boolean=}   [remeasure=false] Should the content (header/footer) be remeasured?
                     */
                    , sizeContent = function (evt_or_panes, remeasure) {
                        if (!isInitialized())
                            return;

                        var panes = evtPane.call(this, evt_or_panes);
                        panes = panes ? panes.split(",") : _c.allPanes;

                        $.each(panes, function (idx, pane) {
                            var
                                $P = $Ps[pane]
                                , $C = $Cs[pane]
                                , o = options[pane]
                                , s = state[pane]
                                , m = s.content // m = measurements
                            ;
                            if (!$P || !$C || !$P.is(":visible"))
                                return true; // NOT VISIBLE - skip

                            // if content-element was REMOVED, update OR remove the pointer
                            if (!$C.length) {
                                initContent(pane, false); // false = do NOT sizeContent() - already there!
                                if (!$C)
                                    return;   // no replacement element found - pointer have been removed
                            }

                            // onsizecontent_start will CANCEL resizing if returns false
                            if (false === _runCallbacks("onsizecontent_start", pane))
                                return;

                            // skip re-measuring offsets if live-resizing
                            if ((!s.isMoving && !s.isResizing) || o.liveContentResizing || remeasure || m.top == undefined) {
                                _measure();
                                // if any footers are below pane-bottom, they may not measure correctly,
                                // so allow pane overflow and re-measure
                                if (m.hiddenFooters > 0 && $P.css("overflow") === "hidden") {
                                    $P.css("overflow", "visible");
                                    _measure(); // remeasure while overflowing
                                    $P.css("overflow", "hidden");
                                }
                            }
                            // NOTE: spaceAbove/Below *includes* the pane paddingTop/Bottom, but not pane.borders
                            var newH = s.innerHeight - (m.spaceAbove - s.css.paddingTop) - (m.spaceBelow - s.css.paddingBottom);

                            if (!$C.is(":visible") || m.height != newH) {
                                // size the Content element to fit new pane-size - will autoHide if not enough room
                                setOuterHeight($C, newH, true); // true=autoHide
                                m.height = newH; // save new height
                            }
                            if (state.initialized)
                                _runCallbacks("onsizecontent_end", pane);

                            function _below($E) {
                                return max(s.css.paddingBottom, (parseInt($E.css("marginBottom"), 10) || 0));
                            }

                            function _measure() {
                                var
                                    ignore = options[pane].contentIgnoreSelector
                                    , $Fs = $C.nextAll().not(".ui-layout-mask").not(ignore || ":lt(0)") // not :lt(0) = ALL
                                    , $Fs_vis = $Fs.filter(':visible')
                                    , $F = $Fs_vis.filter(':last')
                                ;
                                m = {
                                    top: $C[0].offsetTop
                                    , height: $C.outerHeight()
                                    , numFooters: $Fs.length
                                    , hiddenFooters: $Fs.length - $Fs_vis.length
                                    , spaceBelow: 0 // correct if no content footer ($E)
                                };
                                m.spaceAbove = m.top; // just for state - not used in calc
                                m.bottom = m.top + m.height;
                                if ($F.length)
                                    //spaceBelow = (LastFooter.top + LastFooter.height) [footerBottom] - Content.bottom + max(LastFooter.marginBottom, pane.paddingBotom)
                                    m.spaceBelow = ($F[0].offsetTop + $F.outerHeight()) - m.bottom + _below($F);
                                else // no footer - check marginBottom on Content element itself
                                    m.spaceBelow = _below($C);
                            }
                        });
                    }


                    /**
                     * Called every time a pane is opened, closed, or resized to slide the togglers to 'center' and adjust their length if necessary
                     *
                     * @see  initHandles(), open(), close(), resizeAll()
                     * @param {(string|Object)=}  evt_or_panes The pane(s) being resized
                     */
                    , sizeHandles = function (evt_or_panes) {
                        var panes = evtPane.call(this, evt_or_panes);
                        panes = panes ? panes.split(",") : _c.borderPanes;

                        $.each(panes, function (i, pane) {
                            var
                                o = options[pane]
                                , s = state[pane]
                                , $P = $Ps[pane]
                                , $R = $Rs[pane]
                                , $T = $Ts[pane]
                                , $TC
                            ;
                            if (!$P || !$R)
                                return;

                            var
                                dir = _c[pane].dir
                                , _state = (s.isClosed ? "_closed" : "_open")
                                , spacing = o["spacing" + _state]
                                , togAlign = o["togglerAlign" + _state]
                                , togLen = o["togglerLength" + _state]
                                , paneLen
                                , left
                                , offset
                                , CSS = {}
                            ;

                            if (spacing === 0) {
                                $R.hide();
                                return;
                            } else if (!s.noRoom && !s.isHidden) // skip if resizer was hidden for any reason
                                $R.show(); // in case was previously hidden

                            // Resizer Bar is ALWAYS same width/height of pane it is attached to
                            if (dir === "horz") { // north/south
                                //paneLen = $P.outerWidth(); // s.outerWidth ||
                                paneLen = sC.innerWidth; // handle offscreen-panes
                                s.resizerLength = paneLen;
                                left = $.layout.cssNum($P, "left");
                                $R.css({
                                    width: cssW($R, paneLen) // account for borders & padding
                                    , height: cssH($R, spacing) // ditto
                                    , left: left > -9999 ? left : sC.inset.left // handle offscreen-panes
                                });
                            } else { // east/west
                                paneLen = $P.outerHeight(); // s.outerHeight ||
                                s.resizerLength = paneLen;
                                $R.css({
                                    height: cssH($R, paneLen) // account for borders & padding
                                    , width: cssW($R, spacing) // ditto
                                    , top: sC.inset.top + getPaneSize("north", true) // TODO: what if no North pane?
                                    //, top: $.layout.cssNum($Ps["center"], "top")
                                });
                            }

                            // remove hover classes
                            removeHover(o, $R);

                            if ($T) {
                                if (togLen === 0 || (s.isSliding && o.hideTogglerOnSlide)) {
                                    $T.hide(); // always HIDE the toggler when 'sliding'
                                    return;
                                } else
                                    $T.show(); // in case was previously hidden

                                if (!(togLen > 0) || togLen === "100%" || togLen > paneLen) {
                                    togLen = paneLen;
                                    offset = 0;
                                } else { // calculate 'offset' based on options.PANE.togglerAlign_open/closed
                                    if (isStr(togAlign)) {
                                        switch (togAlign) {
                                            case "top":
                                            case "left":
                                                offset = 0;
                                                break;
                                            case "bottom":
                                            case "right":
                                                offset = paneLen - togLen;
                                                break;
                                            case "middle":
                                            case "center":
                                            default:
                                                offset = round((paneLen - togLen) / 2); // 'default' catches typos
                                        }
                                    } else { // togAlign = number
                                        var x = parseInt(togAlign, 10); //
                                        if (togAlign >= 0)
                                            offset = x;
                                        else
                                            offset = paneLen - togLen + x; // NOTE: x is negative!
                                    }
                                }

                                if (dir === "horz") { // north/south
                                    var width = cssW($T, togLen);
                                    $T.css({
                                        width: width  // account for borders & padding
                                        , height: cssH($T, spacing) // ditto
                                        , left: offset // TODO: VERIFY that toggler  positions correctly for ALL values
                                        , top: 0
                                    });
                                    // CENTER the toggler content SPAN
                                    $T.children(".content").each(function () {
                                        $TC = $(this);
                                        $TC.css("marginLeft", round((width - $TC.outerWidth()) / 2)); // could be negative
                                    });
                                } else { // east/west
                                    var height = cssH($T, togLen);
                                    $T.css({
                                        height: height // account for borders & padding
                                        , width: cssW($T, spacing) // ditto
                                        , top: offset // POSITION the toggler
                                        , left: 0
                                    });
                                    // CENTER the toggler content SPAN
                                    $T.children(".content").each(function () {
                                        $TC = $(this);
                                        $TC.css("marginTop", round((height - $TC.outerHeight()) / 2)); // could be negative
                                    });
                                }

                                // remove ALL hover classes
                                removeHover(0, $T);
                            }

                            // DONE measuring and sizing this resizer/toggler, so can be 'hidden' now
                            if (!state.initialized && (o.initHidden || s.isHidden)) {
                                $R.hide();
                                if ($T)
                                    $T.hide();
                            }
                        });
                    }


                    /**
                     * @param {(string|Object)} evt_or_pane
                     */
                    , enableClosable = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $T = $Ts[pane]
                            , o = options[pane]
                        ;
                        if (!$T)
                            return;
                        o.closable = true;
                        $T.on("click." + sID, function (evt) {
                            evt.stopPropagation();
                            toggle(pane);
                        })
                            .css("visibility", "visible")
                            .css("cursor", "pointer")
                            .attr("title", state[pane].isClosed ? o.tips.Open : o.tips.Close) // may be blank
                            .show();
                    }
                    /**
                     * @param {(string|Object)} evt_or_pane
                     * @param {boolean=}   [hide=false]
                     */
                    , disableClosable = function (evt_or_pane, hide) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $T = $Ts[pane]
                        ;
                        if (!$T)
                            return;
                        options[pane].closable = false;
                        // is closable is disable, then pane MUST be open!
                        if (state[pane].isClosed)
                            open(pane, false, true);
                        $T.off("." + sID)
                            .css("visibility", hide ? "hidden" : "visible") // instead of hide(), which creates logic issues
                            .css("cursor", "default")
                            .attr("title", "");
                    }


                    /**
                     * @param {(string|Object)} evt_or_pane
                     */
                    , enableSlidable = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $R = $Rs[pane]
                        ;
                        if (!$R || !$R.data('draggable'))
                            return;
                        options[pane].slidable = true;
                        if (state[pane].isClosed)
                            bindStartSlidingEvents(pane, true);
                    }
                    /**
                     * @param {(string|Object)} evt_or_pane
                     */
                    , disableSlidable = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $R = $Rs[pane]
                        ;
                        if (!$R)
                            return;
                        options[pane].slidable = false;
                        if (state[pane].isSliding)
                            close(pane, false, true);
                        else {
                            bindStartSlidingEvents(pane, false);
                            $R.css("cursor", "default")
                                .attr("title", "");
                            removeHover(null, $R[0]); // in case currently hovered
                        }
                    }


                    /**
                     * @param {(string|Object)} evt_or_pane
                     */
                    , enableResizable = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $R = $Rs[pane]
                            , o = options[pane]
                        ;
                        if (!$R || !$R.data('draggable'))
                            return;
                        o.resizable = true;
                        $R.draggable("enable");
                        if (!state[pane].isClosed)
                            $R.css("cursor", o.resizerCursor)
                                .attr("title", o.tips.Resize);
                    }
                    /**
                     * @param {(string|Object)} evt_or_pane
                     */
                    , disableResizable = function (evt_or_pane) {
                        if (!isInitialized())
                            return;
                        var pane = evtPane.call(this, evt_or_pane)
                            , $R = $Rs[pane]
                        ;
                        if (!$R || !$R.data('draggable'))
                            return;
                        options[pane].resizable = false;
                        $R.draggable("disable")
                            .css("cursor", "default")
                            .attr("title", "");
                        removeHover(null, $R[0]); // in case currently hovered
                    }


                    /**
                     * Move a pane from source-side (eg, west) to target-side (eg, east)
                     * If pane exists on target-side, move that to source-side, ie, 'swap' the panes
                     *
                     * @param {(string|Object)} evt_or_pane1 The pane/edge being swapped
                     * @param {string}   pane2   ditto
                     */
                    , swapPanes = function (evt_or_pane1, pane2) {
                        if (!isInitialized())
                            return;
                        var pane1 = evtPane.call(this, evt_or_pane1);
                        // change state.edge NOW so callbacks can know where pane is headed...
                        state[pane1].edge = pane2;
                        state[pane2].edge = pane1;
                        // run these even if NOT state.initialized
                        if (false === _runCallbacks("onswap_start", pane1)
                            || false === _runCallbacks("onswap_start", pane2)
                        ) {
                            state[pane1].edge = pane1; // reset
                            state[pane2].edge = pane2;
                            return;
                        }

                        var
                            oPane1 = copy(pane1)
                            , oPane2 = copy(pane2)
                            , sizes = {}
                        ;
                        sizes[pane1] = oPane1 ? oPane1.state.size : 0;
                        sizes[pane2] = oPane2 ? oPane2.state.size : 0;

                        // clear pointers & state
                        $Ps[pane1] = false;
                        $Ps[pane2] = false;
                        state[pane1] = {};
                        state[pane2] = {};

                        // ALWAYS remove the resizer & toggler elements
                        if ($Ts[pane1])
                            $Ts[pane1].remove();
                        if ($Ts[pane2])
                            $Ts[pane2].remove();
                        if ($Rs[pane1])
                            $Rs[pane1].remove();
                        if ($Rs[pane2])
                            $Rs[pane2].remove();
                        $Rs[pane1] = $Rs[pane2] = $Ts[pane1] = $Ts[pane2] = false;

                        // transfer element pointers and data to NEW Layout keys
                        move(oPane1, pane2);
                        move(oPane2, pane1);

                        // cleanup objects
                        oPane1 = oPane2 = sizes = null;

                        // make panes 'visible' again
                        if ($Ps[pane1])
                            $Ps[pane1].css(_c.visible);
                        if ($Ps[pane2])
                            $Ps[pane2].css(_c.visible);

                        // fix any size discrepancies caused by swap
                        resizeAll();

                        // run these even if NOT state.initialized
                        _runCallbacks("onswap_end", pane1);
                        _runCallbacks("onswap_end", pane2);


                        function copy(n) { // n = pane
                            var
                                $P = $Ps[n]
                                , $C = $Cs[n]
                            ;
                            return !$P ? false : {
                                pane: n
                                , P: $P ? $P[0] : false
                                , C: $C ? $C[0] : false
                                , state: $.extend(true, {}, state[n])
                                , options: $.extend(true, {}, options[n])
                            }
                        }

                        function move(oPane, pane) {
                            if (!oPane)
                                return;
                            var
                                P = oPane.P
                                , C = oPane.C
                                , oldPane = oPane.pane
                                , c = _c[pane]
                                // save pane-options that should be retained
                                , s = $.extend(true, {}, state[pane])
                                , o = options[pane]
                                // RETAIN side-specific FX Settings - more below
                                , fx = {resizerCursor: o.resizerCursor}
                                , re, size, pos
                            ;
                            $.each("fxName,fxSpeed,fxSettings".split(","), function (i, k) {
                                fx[k + "_open"] = o[k + "_open"];
                                fx[k + "_close"] = o[k + "_close"];
                                fx[k + "_size"] = o[k + "_size"];
                            });

                            // update object pointers and attributes
                            $Ps[pane] = $(P)
                                .data({
                                    layoutPane: Instance[pane] // NEW pointer to pane-alias-object
                                    , layoutEdge: pane
                                })
                                .css(_c.hidden)
                                .css(c.cssReq)
                            ;
                            $Cs[pane] = C ? $(C) : false;

                            // set options and state
                            options[pane] = $.extend(true, {}, oPane.options, fx);
                            state[pane] = $.extend(true, {}, oPane.state);

                            // change classNames on the pane, eg: ui-layout-pane-east ==> ui-layout-pane-west
                            re = new RegExp(o.paneClass + "-" + oldPane, "g");
                            P.className = P.className.replace(re, o.paneClass + "-" + pane);

                            // ALWAYS regenerate the resizer & toggler elements
                            initHandles(pane); // create the required resizer & toggler

                            // if moving to different orientation, then keep 'target' pane size
                            if (c.dir != _c[oldPane].dir) {
                                size = sizes[pane] || 0;
                                setSizeLimits(pane); // update pane-state
                                size = max(size, state[pane].minSize);
                                // use manualSizePane to disable autoResize - not useful after panes are swapped
                                manualSizePane(pane, size, true, true); // true/true = skipCallback/noAnimation
                            } else // move the resizer here
                                $Rs[pane].css(c.side, sC.inset[c.side] + (state[pane].isVisible ? getPaneSize(pane) : 0));


                            // ADD CLASSNAMES & SLIDE-BINDINGS
                            if (oPane.state.isVisible && !s.isVisible)
                                setAsOpen(pane, true); // true = skipCallback
                            else {
                                setAsClosed(pane);
                                bindStartSlidingEvents(pane, true); // will enable events IF option is set
                            }

                            // DESTROY the object
                            oPane = null;
                        }
                    }


                    /**
                     * INTERNAL method to sync pin-buttons when pane is opened or closed
                     * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
                     *
                     * @see  open(), setAsOpen(), setAsClosed()
                     * @param {string} pane   These are the params returned to callbacks by layout()
                     * @param {boolean} doPin  True means set the pin 'down', False means 'up'
                     */
                    , syncPinBtns = function (pane, doPin) {
                        if ($.layout.plugins.buttons)
                            $.each(state[pane].pins, function (i, selector) {
                                $.layout.buttons.setPinState(Instance, $(selector), pane, doPin);
                            });
                    }

                ; // END var DECLARATIONS

                /**
                 * Capture keys when enableCursorHotkey - toggle pane if hotkey pressed
                 *
                 * @see  document.keydown()
                 */
                function keyDown(evt) {
                    if (!evt)
                        return true;
                    var code = evt.keyCode;
                    if (code < 33)
                        return true; // ignore special keys: ENTER, TAB, etc

                    var
                        PANE = {
                            38: "north" // Up Cursor - $.ui.keyCode.UP
                            , 40: "south" // Down Cursor - $.ui.keyCode.DOWN
                            , 37: "west"  // Left Cursor - $.ui.keyCode.LEFT
                            , 39: "east"  // Right Cursor - $.ui.keyCode.RIGHT
                        }
                        , ALT = evt.altKey // no worky!
                        , SHIFT = evt.shiftKey
                        , CTRL = evt.ctrlKey
                        , CURSOR = (CTRL && code >= 37 && code <= 40)
                        , o, k, m, pane
                    ;

                    if (CURSOR && options[PANE[code]].enableCursorHotkey) // valid cursor-hotkey
                        pane = PANE[code];
                    else if (CTRL || SHIFT) // check to see if this matches a custom-hotkey
                        $.each(_c.borderPanes, function (i, p) { // loop each pane to check its hotkey
                            o = options[p];
                            k = o.customHotkey;
                            m = o.customHotkeyModifier; // if missing or invalid, treated as "CTRL+SHIFT"
                            if ((SHIFT && m == "SHIFT") || (CTRL && m == "CTRL") || (CTRL && SHIFT)) { // Modifier matches
                                if (k && code === (isNaN(k) || k <= 9 ? k.toUpperCase().charCodeAt(0) : k)) { // Key matches
                                    pane = p;
                                    return false; // BREAK
                                }
                            }
                        });

                    // validate pane
                    if (!pane || !$Ps[pane] || !options[pane].closable || state[pane].isHidden)
                        return true;

                    toggle(pane);

                    evt.stopPropagation();
                    evt.returnValue = false; // CANCEL key
                    return false;
                }

                /*
         * ######################################
         * UTILITY METHODS
         * called externally or by initButtons
         * ######################################
         */

                /**
                 * Change/reset a pane overflow setting & zIndex to allow popups/drop-downs to work
                 *
                 * @param {Object=}   [el] (optional) Can also be 'bound' to a click, mouseOver, or other event
                 */
                function allowOverflow(el) {
                    if (!isInitialized())
                        return;
                    if (this && this.tagName)
                        el = this; // BOUND to element
                    var $P;
                    if (isStr(el))
                        $P = $Ps[el];
                    else if ($(el).data("layoutRole"))
                        $P = $(el);
                    else
                        $(el).parents().each(function () {
                            if ($(this).data("layoutRole")) {
                                $P = $(this);
                                return false; // BREAK
                            }
                        });
                    if (!$P || !$P.length)
                        return; // INVALID

                    var
                        pane = $P.data("layoutEdge")
                        , s = state[pane]
                    ;

                    // if pane is already raised, then reset it before doing it again!
                    // this would happen if allowOverflow is attached to BOTH the pane and an element
                    if (s.cssSaved)
                        resetOverflow(pane); // reset previous CSS before continuing

                    // if pane is raised by sliding or resizing, or its closed, then abort
                    if (s.isSliding || s.isResizing || s.isClosed) {
                        s.cssSaved = false;
                        return;
                    }

                    var
                        newCSS = {zIndex: (options.zIndexes.resizer_normal + 1)}
                        , curCSS = {}
                        , of = $P.css("overflow")
                        , ofX = $P.css("overflowX")
                        , ofY = $P.css("overflowY")
                    ;
                    // determine which, if any, overflow settings need to be changed
                    if (of != "visible") {
                        curCSS.overflow = of;
                        newCSS.overflow = "visible";
                    }
                    if (ofX && !ofX.match(/(visible|auto)/)) {
                        curCSS.overflowX = ofX;
                        newCSS.overflowX = "visible";
                    }
                    if (ofY && !ofY.match(/(visible|auto)/)) {
                        curCSS.overflowY = ofX;
                        newCSS.overflowY = "visible";
                    }

                    // save the current overflow settings - even if blank!
                    s.cssSaved = curCSS;

                    // apply new CSS to raise zIndex and, if necessary, make overflow 'visible'
                    $P.css(newCSS);

                    // make sure the zIndex of all other panes is normal
                    $.each(_c.allPanes, function (i, p) {
                        if (p != pane)
                            resetOverflow(p);
                    });

                }

                /**
                 * @param {Object=}   [el] (optional) Can also be 'bound' to a click, mouseOver, or other event
                 */
                function resetOverflow(el) {
                    if (!isInitialized())
                        return;
                    if (this && this.tagName)
                        el = this; // BOUND to element
                    var $P;
                    if (isStr(el))
                        $P = $Ps[el];
                    else if ($(el).data("layoutRole"))
                        $P = $(el);
                    else
                        $(el).parents().each(function () {
                            if ($(this).data("layoutRole")) {
                                $P = $(this);
                                return false; // BREAK
                            }
                        });
                    if (!$P || !$P.length)
                        return; // INVALID

                    var
                        pane = $P.data("layoutEdge")
                        , s = state[pane]
                        , CSS = s.cssSaved || {}
                    ;
                    // reset the zIndex
                    if (!s.isSliding && !s.isResizing)
                        $P.css("zIndex", options.zIndexes.pane_normal);

                    // reset Overflow - if necessary
                    $P.css(CSS);

                    // clear var
                    s.cssSaved = false;
                }

                /*
         * #####################
         * CREATE/RETURN LAYOUT
         * #####################
         */

                // validate that container exists
                var $N = $(this).eq(0); // FIRST matching Container element
                if (!$N.length) {
                    return _log(options.errors.containerMissing);
                }
                // Users retrieve Instance of a layout with: $N.layout() OR $N.data("layout")
                // return the Instance-pointer if layout has already been initialized
                if ($N.data("layoutContainer") && $N.data("layout"))
                    return $N.data("layout"); // cached pointer

                // init global vars
                var
                    $Ps = {} // Panes x5  - set in initPanes()
                    , $Cs = {} // Content x5 - set in initPanes()
                    , $Rs = {} // Resizers x4 - set in initHandles()
                    , $Ts = {} // Togglers x4 - set in initHandles()
                    , $Ms = $([]) // Masks - up to 2 masks per pane (IFRAME + DIV)
                    // aliases for code brevity
                    , sC = state.container // alias for easy access to 'container dimensions'
                    , sID = state.id // alias for unique layout ID/namespace - eg: "layout435"
                ;

                // create Instance object to expose data & option Properties, and primary action Methods
                var Instance = {
                    // layout data
                    options: options   // property - options hash
                    , state: state   // property - dimensions hash
                    // object pointers
                    , container: $N    // property - object pointers for layout container
                    , panes: $Ps    // property - object pointers for ALL Panes: panes.north, panes.center
                    , contents: $Cs    // property - object pointers for ALL Content: contents.north, contents.center
                    , resizers: $Rs    // property - object pointers for ALL Resizers, eg: resizers.north
                    , togglers: $Ts    // property - object pointers for ALL Togglers, eg: togglers.north
                    // border-pane open/close
                    , hide: hide   // method - ditto
                    , show: show   // method - ditto
                    , toggle: toggle   // method - pass a 'pane' ("north", "west", etc)
                    , open: open   // method - ditto
                    , close: close   // method - ditto
                    , slideOpen: slideOpen  // method - ditto
                    , slideClose: slideClose  // method - ditto
                    , slideToggle: slideToggle  // method - ditto
                    // pane actions
                    , setSizeLimits: setSizeLimits // method - pass a 'pane' - update state min/max data
                    , _sizePane: sizePane  // method -intended for user by plugins only!
                    , sizePane: manualSizePane // method - pass a 'pane' AND an 'outer-size' in pixels or percent, or 'auto'
                    , sizeContent: sizeContent  // method - pass a 'pane'
                    , swapPanes: swapPanes  // method - pass TWO 'panes' - will swap them
                    , showMasks: showMasks  // method - pass a 'pane' OR list of panes - default = all panes with mask option set
                    , hideMasks: hideMasks  // method - ditto'
                    // pane element methods
                    , initContent: initContent  // method - ditto
                    , addPane: addPane   // method - pass a 'pane'
                    , removePane: removePane  // method - pass a 'pane' to remove from layout, add 'true' to delete the pane-elem
                    , createChildren: createChildren // method - pass a 'pane' and (optional) layout-options (OVERRIDES options[pane].children
                    , refreshChildren: refreshChildren // method - pass a 'pane' and a layout-instance
                    // special pane option setting
                    , enableClosable: enableClosable // method - pass a 'pane'
                    , disableClosable: disableClosable // method - ditto
                    , enableSlidable: enableSlidable // method - ditto
                    , disableSlidable: disableSlidable // method - ditto
                    , enableResizable: enableResizable // method - ditto
                    , disableResizable: disableResizable// method - ditto
                    // utility methods for panes
                    , allowOverflow: allowOverflow // utility - pass calling element (this)
                    , resetOverflow: resetOverflow // utility - ditto
                    // layout control
                    , destroy: destroy   // method - no parameters
                    , initPanes: isInitialized // method - no parameters
                    , resizeAll: resizeAll  // method - no parameters
                    // callback triggering
                    , runCallbacks: _runCallbacks // method - pass evtName & pane (if a pane-event), eg: trigger("onopen", "west")
                    // alias collections of options, state and children - created in addPane and extended elsewhere
                    , hasParentLayout: false   // set by initContainer()
                    , children: children  // pointers to child-layouts, eg: Instance.children.west.layoutName
                    , north: false   // alias group: { name: pane, pane: $Ps[pane], options: options[pane], state: state[pane], children: children[pane] }
                    , south: false   // ditto
                    , west: false   // ditto
                    , east: false   // ditto
                    , center: false   // ditto
                };

                // create the border layout NOW
                if (_create() === 'cancel') // onload_start callback returned false to CANCEL layout creation
                    return null;
                else // true OR false -- if layout-elements did NOT init (hidden or do not exist), can auto-init later
                    return Instance; // return the Instance object

            };
        }

    )(jQuery);


    /**
     * Cookie plugin
     *
     * Copyright (c) 2006 Klaus Hartl (stilbuero.de)
     * Dual licensed under the MIT and GPL licenses:
     * http://www.opensource.org/licenses/mit-license.php
     * http://www.gnu.org/licenses/gpl.html
     *
     */
    /*jQuery.cookie = function (name, value, options) {
        if (typeof value != 'undefined') { // name and value given, set cookie
            options = options || {};
            if (value === null) {
                value = '';
                options.expires = -1;
            }
            var expires = '';
            if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
                var date;
                if (typeof options.expires == 'number') {
                    date = new Date();
                    date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
                } else {
                    date = options.expires;
                }
                expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
            }
            // CAUTION: Needed to parenthesize options.path and options.domain
            // in the following expressions, otherwise they evaluate to undefined
            // in the packed version for some reason...
            var path = options.path ? '; path=' + (options.path) : '';
            var domain = options.domain ? '; domain=' + (options.domain) : '';
            var secure = options.secure ? '; secure; samesite=' + options.sameSite : '';
            var httpOnly = options.httpOnly ? '; HttpOnly' : '';
            document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
        } else { // only name given, get cookie
            var cookieValue = null;
            if (document.cookie && document.cookie != '') {
                var cookies = document.cookie.split(';');
                for (var i = 0; i < cookies.length; i++) {
                    var cookie = String.prototype.trim(cookies[i]);
                    // Does this cookie string begin with the name we want?
                    if (cookie.substring(0, name.length + 1) == (name + '=')) {
                        cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                        break;
                    }
                }
            }
            return cookieValue;
        }
    };
    */

    /**
     * @preserve jquery.layout.state 1.0
     * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
     *
     * Copyright (c) 2010
     *   Kevin Dalman (http://allpro.net)
     *
     * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
     * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
     *
     * @dependancies: UI Layout 1.8.2 or higher
     * @dependancies: Persist.js
     *
     * @support: http://groups.google.com/group/jquery-ui-layout
     */
    /*
     *	State-management options stored in options.stateManagement, which includes a .cookie hash
     *	Default options saves ALL KEYS for ALL PANES, ie: pane.size, pane.isClosed, pane.isHidden
     *
     *	// STATE/COOKIE OPTIONS
     *	@example $(el).layout({
                    stateManagement: {
                        enabled:	true
                    ,	stateKeys:	"east.size,west.size,east.isClosed,west.isClosed"
                    ,	cookie:		{ name: "appLayout", path: "/" }
                    }
                })
     *	@example $(el).layout({ stateManagement__enabled: true }) // enable auto-state-management using cookies
     *	@example $(el).layout({ stateManagement__cookie: { name: "appLayout", path: "/" } })
     *	@example $(el).layout({ stateManagement__cookie__name: "appLayout", stateManagement__cookie__path: "/" })
     *
     *	// STATE/COOKIE METHODS
     *	@example myLayout.saveCookie( "west.isClosed,north.size,south.isHidden", {expires: 7} );
     *	@example myLayout.loadCookie();
     *	@example myLayout.deleteCookie();
     *	@example var JSON = myLayout.readState();	// CURRENT Layout State
     *	@example var JSON = myLayout.readCookie();	// SAVED Layout State (from cookie)
     *	@example var JSON = myLayout.state.stateData;	// LAST LOADED Layout State (cookie saved in layout.state hash)
     *
     *	CUSTOM STATE-MANAGEMENT (eg, saved in a database)
     *	@example var JSON = myLayout.readState( "west.isClosed,north.size,south.isHidden" );
     *	@example myLayout.loadState( JSON );
     */

// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars

    ;(function ($) {

    if (!$.layout) return;

    /**
     Persist-JS
     */
    (function(){if(window.google&&google.gears){return}var a=null;if(typeof GearsFactory!="undefined"){a=new GearsFactory()}else{try{a=new ActiveXObject("Gears.Factory");if(a.getBuildInfo().indexOf("ie_mobile")!=-1){a.privateSetGlobalObject(this)}}catch(b){if((typeof navigator.mimeTypes!="undefined")&&navigator.mimeTypes["application/x-googlegears"]){a=document.createElement("object");a.style.display="none";a.width=0;a.height=0;a.type="application/x-googlegears";document.documentElement.appendChild(a)}}}if(!a){return}if(!window.google){google={}}if(!google.gears){google.gears={factory:a}}})();Persist=(function(){var i="0.3.1",d,b,g,h,e,f;f=(function(){var q="Thu, 01-Jan-1970 00:00:01 GMT",k=1000*60*60*24,r=["expires","path","domain"],m=escape,l=unescape,p=document,n;var s=function(){var t=new Date();t.setTime(t.getTime());return t};var j=function(x,A){var w,v,z,y=[],u=(arguments.length>2)?arguments[2]:{};y.push(m(x)+"="+m(A));for(var t=0;t<r.length;t++){v=r[t];z=u[v];if(z){y.push(v+"="+z)}}if(u.secure){y.push("secure")}return y.join("; ")};var o=function(){return navigator.cookieEnabled};n={set:function(B,x){var u=(arguments.length>2)?arguments[2]:{},v=s(),A,z={};if(u.expires){if(u.expires==-1){z.expires=-1}else{var w=u.expires*k;z.expires=new Date(v.getTime()+w);z.expires=z.expires.toGMTString()}}var C=["path","domain","secure"];for(var y=0;y<C.length;y++){if(u[C[y]]){z[C[y]]=u[C[y]]}}var t=j(B,x,z);p.cookie=t;return x},has:function(u){u=m(u);var x=p.cookie,w=x.indexOf(u+"="),t=w+u.length+1,v=x.substring(0,u.length);return((!w&&u!=v)||w<0)?false:true},get:function(v){v=m(v);var y=p.cookie,x=y.indexOf(v+"="),t=x+v.length+1,w=y.substring(0,v.length),u;if((!x&&v!=w)||x<0){return null}u=y.indexOf(";",t);if(u<0){u=y.length}return l(y.substring(t,u))},remove:function(t){var v=n.get(t),u={expires:q};p.cookie=j(t,"",u);return v},keys:function(){var y=p.cookie,x=y.split("; "),u,w,v=[];for(var t=0;t<x.length;t++){w=x[t].split("=");v.push(l(w[0]))}return v},all:function(){var y=p.cookie,x=y.split("; "),u,w,v=[];for(var t=0;t<x.length;t++){w=x[t].split("=");v.push([l(w[0]),l(w[1])])}return v},version:"0.2.1",enabled:false};n.enabled=o.call(n);return n}());var c=(function(){if(Array.prototype.indexOf){return function(j,k){return Array.prototype.indexOf.call(j,k)}}else{return function(o,p){var n,m;for(var k=0,j=o.length;k<j;k++){if(o[k]==p){return k}}return -1}}})();e=function(){};g=function(j){return"PS"+j.replace(/_/g,"__").replace(/ /g,"_s")};var a={search_order:["localstorage","globalstorage","gears","cookie","ie","flash"],name_re:/^[a-z][a-z0-9_ \-]+$/i,methods:["init","get","set","remove","load","save","iterate"],sql:{version:"1",create:"CREATE TABLE IF NOT EXISTS persist_data (k TEXT UNIQUE NOT NULL PRIMARY KEY, v TEXT NOT NULL)",get:"SELECT v FROM persist_data WHERE k = ?",set:"INSERT INTO persist_data(k, v) VALUES (?, ?)",remove:"DELETE FROM persist_data WHERE k = ?",keys:"SELECT * FROM persist_data"},flash:{div_id:"_persist_flash_wrap",id:"_persist_flash",path:"persist.swf",size:{w:1,h:1},params:{autostart:true}}};b={gears:{size:-1,test:function(){return(window.google&&window.google.gears)?true:false},methods:{init:function(){var j;j=this.db=google.gears.factory.create("beta.database");j.open(g(this.name));j.execute(a.sql.create).close()},get:function(l){var m,n=a.sql.get;var j=this.db;var k;j.execute("BEGIN").close();m=j.execute(n,[l]);k=m.isValidRow()?m.field(0):null;m.close();j.execute("COMMIT").close();return k},set:function(m,p){var k=a.sql.remove,o=a.sql.set,n;var j=this.db;var l;j.execute("BEGIN").close();j.execute(k,[m]).close();j.execute(o,[m,p]).close();j.execute("COMMIT").close();return p},remove:function(l){var n=a.sql.get,p=a.sql.remove,m,o=null,j=false;var k=this.db;k.execute("BEGIN").close();k.execute(p,[l]).close();k.execute("COMMIT").close();return true},iterate:function(m,l){var k=a.sql.keys;var n;var j=this.db;n=j.execute(k);while(n.isValidRow()){m.call(l||this,n.field(0),n.field(1));n.next()}n.close()}}},globalstorage:{size:5*1024*1024,test:function(){if(window.globalStorage){var j="127.0.0.1";if(this.o&&this.o.domain){j=this.o.domain}try{var l=globalStorage[j];return true}catch(k){if(window.console&&window.console.warn){console.warn("globalStorage exists, but couldn't use it because your browser is running on domain:",j)}return false}}else{return false}},methods:{key:function(j){return g(this.name)+g(j)},init:function(){this.store=globalStorage[this.o.domain]},get:function(j){j=this.key(j);return this.store.getItem(j)},set:function(j,k){j=this.key(j);this.store.setItem(j,k);return k},remove:function(j){var k;j=this.key(j);k=this.store.getItem[j];this.store.removeItem(j);return k}}},localstorage:{size:-1,test:function(){try{if(window.localStorage&&window.localStorage.setItem("persistjs_test_local_storage",null)==undefined){window.localStorage.removeItem("persistjs_test_local_storage");if(/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)){var k=RegExp.$1;if(k>=9){return true}if(window.location.protocol=="file:"){return false}}else{return true}}else{return false}return window.localStorage?true:false}catch(j){return false}},methods:{key:function(j){return this.name+">"+j},init:function(){this.store=localStorage},get:function(j){j=this.key(j);return this.store.getItem(j)},set:function(j,k){j=this.key(j);this.store.setItem(j,k);return k},remove:function(j){var k;j=this.key(j);k=this.store.getItem(j);this.store.removeItem(j);return k},iterate:function(o,n){var j=this.store,m,p;for(var 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n,j,p,r,s=a.methods,t=a.search_order;for(var q=0,o=s.length;q<o;q++){d.Store.prototype[s[q]]=e}d.type=null;d.size=-1;for(var m=0,k=t.length;!d.type&&m<k;m++){p=b[t[m]];if(p.test()){d.type=t[m];d.size=p.size;for(r in p.methods){d.Store.prototype[r]=p.methods[r]}}}d._init=true};d={VERSION:i,type:null,size:0,add:function(j){b[j.id]=j;a.search_order=[j.id].concat(a.search_order);h()},remove:function(k){var j=c(a.search_order,k);if(j<0){return}a.search_order.splice(j,1);delete b[k];h()},Cookie:f,Store:function(j,k){if(!a.name_re.exec(j)){throw new Error("Invalid name")}if(!d.type){throw new Error("No suitable storage found")}k=k||{};this.name=j;k.domain=k.domain||location.hostname||"localhost";k.domain=k.domain.replace(/:\d+$/,"");k.domain=(k.domain=="localhost")?"":k.domain;this.o=k;k.expires=k.expires||365*2;k.path=k.path||"/";if(this.o.search_order){a.search_order=this.o.search_order;h()}this.init()}};h();return d})();
    var layoutStore = new Persist.Store("LayoutProperties");
// tell Layout that the state plugin is available
    $.layout.plugins.stateManagement = true;

//	Add State-Management options to layout.defaults
    $.layout.defaults.stateManagement = {
        enabled:	false	// true = enable state-management, even if not using cookies
        ,	autoSave:	true	// Save a state-cookie when page exits?
        ,	autoLoad:	true	// Load the state-cookie when Layout inits?
        // List state-data to save - must be pane-specific
        ,	stateKeys:	"north.size,south.size,east.size,west.size,"+
            "north.isClosed,south.isClosed,east.isClosed,west.isClosed,"+
            "north.isHidden,south.isHidden,east.isHidden,west.isHidden"
        , storeLocation: 'localstorage' //or globalStorage or sessionStorage or cookie or flash or
        ,	cookie: {
            name:	""	// If not specified, will use Layout.name, else just "Layout". Now the Store Name
        }
    };
// Set stateManagement as a layout-option, NOT a pane-option
    $.layout.optionsMap.layout.push("stateManagement");

    /*
     *	State Managment methods
     */
    $.layout.state = {
        // set data used by multiple methods below
        config: {
            allPanes:	"north,south,west,east,center"
        }

        /**
         * Get the current layout state and save it to a cookie
         *
         * myLayout.saveCookie( keys, cookieOpts )
         *
         * @param {Object}			inst
         * @param {(string|Array)=}	keys
         * @param {Object=}			opts
         */
        ,	saveCookie: function (inst, keys, cookieOpts) {
            var o	= inst.options
                ,	oS	= o.stateManagement
                ,	oC	= $.extend( {}, oS.cookie, cookieOpts || {} )
                ,	data = inst.state.stateData = inst.readState( keys || oS.stateKeys ) // read current panes-state
            ;
            var storeName = oC.name || o.name || "Layout";
            layoutStore.set(storeName,JSON.stringify(data));
            layoutStore.save();
            return $.extend( {}, data ); // return COPY of state.stateData data
        }

        /**
         * Remove the state cookie
         *
         * @param {Object}	inst
         */
        ,	deleteCookie: function (inst) {
            var o = inst.options;
            layoutStore.remove( o.stateManagement.cookie.name || o.name || "Layout");
        }

        /**
         * Read & return data from the cookie - as JSON
         *
         * @param {Object}	inst
         */
        ,	readCookie: function (inst) {
            var o = inst.options;
            var c = layoutStore.get(o.stateManagement.cookie.name || o.name || "Layout");
            // convert cookie string back to a hash and return it
            return c ? JSON.parse(c): {};
        }

        /**
         * Get data from the cookie and USE IT to loadState
         *
         * @param {Object}	inst
         */
        ,	loadCookie: function (inst) {
            var c = $.layout.state.readCookie(inst); // READ the cookie
            if (c && !$.isEmptyObject( c )) {
                inst.state.stateData = $.extend({}, c); // SET state.stateData
                inst.loadState(c); // LOAD the retrieved state
            }
            return c;
        }

        /**
         * Update layout options from the cookie, if one exists
         *
         * @param {Object}		inst
         * @param {Object=}		stateData
         * @param {boolean=}	animate
         */
        ,	loadState: function (inst, stateData, animate) {
            stateData = $.layout.transformData( stateData ); // panes = default subkey
            $.extend( true, inst.options, stateData ); // update layout options
            // if layout has already been initialized, then UPDATE layout state
            if (inst.state.initialized) {
                var pane, o, s, h, c
                    ,	noAnimate = (animate===false);
                $.each($.layout.state.config.allPanes.split(","), function (idx, pane) {
                    o = stateData[ pane ];
                    if (typeof o != 'object') return; // no key, continue
                    s = o.size;
                    c = o.initClosed;
                    h = o.initHidden;
                    if (s > 0 || s=="auto") inst.sizePane(pane, s, false, null, noAnimate); // will animate resize if option enabled
                    if (h === true)			inst.hide(pane, a);
                    else if (c === false)	inst.open (pane, false, noAnimate);
                    else if (c === true)	inst.close(pane, false, noAnimate);
                    else if (h === false)	inst.show (pane, false, noAnimate);
                });
            }
        }

        /**
         * Get the *current layout state* and return it as a hash
         *
         * @param {Object=}			inst
         * @param {(string|Array)=}	keys
         */
        ,	readState: function (inst, keys) {
            var
                data	= {}
                ,	alt		= { isClosed: 'initClosed', isHidden: 'initHidden' }
                ,	state	= inst.state
                ,	pair, pane, key, val
            ;
            if (!keys) keys = inst.options.stateManagement.stateKeys; // if called by user
            if (Array.isArray(keys)) keys = keys.join(",");
            // convert keys to an array and change delimiters from '__' to '.'
            keys = keys.replace(/__/g, ".").split(',');
            // loop keys and create a data hash
            for (var i=0, n=keys.length; i < n; i++) {
                pair = keys[i].split(".");
                pane = pair[0];
                key  = pair[1];
                if ($.layout.state.config.allPanes.indexOf(pane) < 0) continue; // bad pane!
                val = state[ pane ][ key ];
                if (val == undefined) continue;
                if (key=="isClosed" && state[pane]["isSliding"])
                    val = true; // if sliding, then *really* isClosed
                ( data[pane] || (data[pane]={}) )[ alt[key] ? alt[key] : key ] = val;
            }
            return data;
        }
        ,	_create: function (inst) {
            //	ADD State-Management plugin methods to inst
            $.extend( inst, {
                //	readCookie - update options from cookie - returns hash of cookie data
                readCookie:		function () { return $.layout.state.readCookie(inst); }
                //	deleteCookie
                ,	deleteCookie:	function () { $.layout.state.deleteCookie(inst); }
                //	saveCookie - optionally pass keys-list and cookie-options (hash)
                ,	saveCookie:		function (keys, cookieOpts) { return $.layout.state.saveCookie(inst, keys, cookieOpts); }
                //	loadCookie - readCookie and use to loadState() - returns hash of cookie data
                ,	loadCookie:		function () { return $.layout.state.loadCookie(inst); }
                //	loadState - pass a hash of state to use to update options
                ,	loadState:		function (stateData, animate) { $.layout.state.loadState(inst, stateData, animate); }
                //	readState - returns hash of current layout-state
                ,	readState:		function (keys) { return $.layout.state.readState(inst, keys); }
            });

            // init state.stateData key, even if plugin is initially disabled
            inst.state.stateData = {};

            // read and load cookie-data per options
            var oS = inst.options.stateManagement;
            if (oS.enabled) {
                if (oS.autoLoad) // update the options from the cookie
                    inst.loadCookie();
                else // don't modify options - just store cookie data in state.stateData
                    inst.state.stateData = inst.readCookie();
            }
        }

        ,	_unload: function (inst) {
            var oS = inst.options.stateManagement;
            if (oS.enabled) {
                if (oS.autoSave) // save a state-cookie automatically
                    inst.saveCookie();
                else // don't save a cookie, but do store state-data in state.stateData key
                    inst.state.stateData = inst.readState();
            }
        }
    };

// add state initialization method to Layout's onCreate array of functions
    $.layout.onCreate.push( $.layout.state._create );
    $.layout.onUnload.push( $.layout.state._unload );

})( jQuery );



    (function ($) {

        if (!$.layout)
            return;


// tell Layout that the state plugin is available
        $.layout.plugins.buttons = true;

// Add State-Management options to layout.defaults
        $.layout.defaults.autoBindCustomButtons = false;
// Set stateManagement as a layout-option, NOT a pane-option
        $.layout.optionsMap.layout.push("autoBindCustomButtons");

        /*
     * Button methods
     */
        $.layout.buttons = {
            // set data used by multiple methods below
            config: {
                borderPanes: "north,south,west,east"
            }

            /**
             * Searches for .ui-layout-button-xxx elements and auto-binds them as layout-buttons
             *
             * @see  _create()
             */
            , init: function (inst) {
                var pre = "ui-layout-button-"
                    , layout = inst.options.name || ""
                    , name;
                $.each("toggle,open,close,pin,toggle-slide,open-slide".split(","), function (i, action) {
                    $.each($.layout.buttons.config.borderPanes.split(","), function (ii, pane) {
                        $("." + pre + action + "-" + pane).each(function () {
                            // if button was previously 'bound', data.layoutName was set, but is blank if layout has no 'name'
                            name = $(this).data("layoutName") || $(this).attr("layoutName");
                            if (name == undefined || name === layout)
                                inst.onButton(this, action, pane);
                        });
                    });
                });
            }

            /**
             * Helper function to validate params received by addButton utilities
             *
             * Two classes are added to the element, based on the buttonClass...
             * The type of button is appended to create the 2nd className:
             *  - ui-layout-button-pin
             *  - ui-layout-pane-button-toggle
             *  - ui-layout-pane-button-open
             *  - ui-layout-pane-button-close
             *
             * @param  {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param  {string}      pane   Name of the pane the button is for: 'north', 'south', etc.
             * @return {Array.<Object>}  If both params valid, the element matching 'selector' in a jQuery wrapper - otherwise returns null
             */
            , get: function (inst, selector, pane, action) {
                var $E = $(selector)
                    , o = inst.options
                    //, err = o.showErrorMessages
                ;
                if ($E.length && $.layout.buttons.config.borderPanes.indexOf(pane) >= 0) {
                    var btn = o[pane].buttonClass + "-" + action;
                    $E.addClass(btn + " " + btn + "-" + pane)
                        .data("layoutName", o.name); // add layout identifier - even if blank!
                }
                return $E;
            }


            /**
             * NEW syntax for binding layout-buttons - will eventually replace addToggle, addOpen, etc.
             *
             * @param {(string|!Object)} sel  jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}   action
             * @param {string}   pane
             */
            , bind: function (inst, sel, action, pane) {
                var _ = $.layout.buttons;
                switch (action.toLowerCase()) {
                    case "toggle":
                        _.addToggle(inst, sel, pane);
                        break;
                    case "open":
                        _.addOpen(inst, sel, pane);
                        break;
                    case "close":
                        _.addClose(inst, sel, pane);
                        break;
                    case "pin":
                        _.addPin(inst, sel, pane);
                        break;
                    case "toggle-slide":
                        _.addToggle(inst, sel, pane, true);
                        break;
                    case "open-slide":
                        _.addOpen(inst, sel, pane, true);
                        break;
                }
                return inst;
            }

            /**
             * Add a custom Toggler button for a pane
             *
             * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
             * @param {boolean=}   slide   true = slide-open, false = pin-open
             */
            , addToggle: function (inst, selector, pane, slide) {
                $.layout.buttons.get(inst, selector, pane, "toggle")
                    .on('click',function (evt) {
                        inst.toggle(pane, !!slide);
                        evt.stopPropagation();
                    });
                return inst;
            }
            /**
             * Add a slide Toggler button for a pane
             *
             * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
             * @param {boolean=}   slide   true = slide-open, false = pin-open
             */
            , addSlideToggle: function (inst, selector, pane, slide) {
                $.layout.buttons.get(inst, selector, pane, "slideToggle")
                    .on('click',function (evt) {
                        inst.slideToggle(pane, !!slide);
                        evt.stopPropagation();
                    });
                return inst;
            }

            /**
             * Add a custom Open button for a pane
             *
             * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}   pane   Name of the pane the button is for: 'north', 'south', etc.
             * @param {boolean=}   slide   true = slide-open, false = pin-open
             */
            , addOpen: function (inst, selector, pane, slide) {
                $.layout.buttons.get(inst, selector, pane, "open")
                    .attr("title", inst.options[pane].tips.Open)
                    .on('click',function (evt) {
                        inst.open(pane, !!slide);
                        evt.stopPropagation();
                    });
                return inst;
            }

            /**
             * Add a custom Close button for a pane
             *
             * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}     pane   Name of the pane the button is for: 'north', 'south', etc.
             */
            , addClose: function (inst, selector, pane) {
                $.layout.buttons.get(inst, selector, pane, "close")
                    .attr("title", inst.options[pane].tips.Close)
                    .on('click',function (evt) {
                        inst.close(pane);
                        evt.stopPropagation();
                    });
                return inst;
            }

            /**
             * Add a custom Pin button for a pane
             *
             * Four classes are added to the element, based on the paneClass for the associated pane...
             * Assuming the default paneClass and the pin is 'up', these classes are added for a west-pane pin:
             *  - ui-layout-pane-pin
             *  - ui-layout-pane-west-pin
             *  - ui-layout-pane-pin-up
             *  - ui-layout-pane-west-pin-up
             *
             * @param {(string|!Object)} selector jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
             * @param {string}     pane   Name of the pane the pin is for: 'north', 'south', etc.
             */
            , addPin: function (inst, selector, pane) {
                var $E = $.layout.buttons.get(inst, selector, pane, "pin");
                if ($E.length) {
                    var s = inst.state[pane];
                    $E.on('click',function (evt) {
                        $.layout.buttons.setPinState(inst, $(this), pane, (s.isSliding || s.isClosed));
                        if (s.isSliding || s.isClosed)
                            inst.open(pane); // change from sliding to open
                        else
                            inst.close(pane); // slide-closed
                        evt.stopPropagation();
                    });
                    // add up/down pin attributes and classes
                    $.layout.buttons.setPinState(inst, $E, pane, (!s.isClosed && !s.isSliding));
                    // add this pin to the pane data so we can 'sync it' automatically
                    // PANE.pins key is an array so we can store multiple pins for each pane
                    s.pins.push(selector); // just save the selector string
                }
                return inst;
            }

            /**
             * Change the class of the pin button to make it look 'up' or 'down'
             *
             * @see  addPin(), syncPins()
             * @param {Array.<Object>} $Pin The pin-span element in a jQuery wrapper
             * @param {string} pane These are the params returned to callbacks by layout()
             * @param {boolean} doPin true = set the pin 'down', false = set it 'up'
             */
            , setPinState: function (inst, $Pin, pane, doPin) {
                var updown = $Pin.attr("pin");
                if (updown && doPin === (updown == "down"))
                    return; // already in correct state
                var
                    po = inst.options[pane]
                    , lang = po.tips
                    , pin = po.buttonClass + "-pin"
                    , side = pin + "-" + pane
                    , UP = pin + "-up " + side + "-up"
                    , DN = pin + "-down " + side + "-down"
                ;
                $Pin
                    .attr("pin", doPin ? "down" : "up") // logic
                    .attr("title", doPin ? lang.Unpin : lang.Pin)
                    .removeClass(doPin ? UP : DN)
                    .addClass(doPin ? DN : UP)
                ;
            }

            /**
             * INTERNAL function to sync 'pin buttons' when pane is opened or closed
             * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
             *
             * @see  open(), close()
             * @param {string} pane   These are the params returned to callbacks by layout()
             * @param {boolean} doPin  True means set the pin 'down', False means 'up'
             */
            , syncPinBtns: function (inst, pane, doPin) {
                // REAL METHOD IS _INSIDE_ LAYOUT - THIS IS HERE JUST FOR REFERENCE
                $.each(state[pane].pins, function (i, selector) {
                    $.layout.buttons.setPinState(inst, $(selector), pane, doPin);
                });
            }


            , _load: function (inst) {
                // ADD Button methods to Layout Instance
                $.extend(inst, {
                    bindButton: function (selector, action, pane) {
                        return $.layout.buttons.on(inst, selector, action, pane);
                    }
                    // DEPRECATED METHODS...
                    , addToggleBtn: function (selector, pane, slide) {
                        return $.layout.buttons.addToggle(inst, selector, pane, slide);
                    }
                    , addSlideToggleBtn: function (selector, pane, slide) {
                        return $.layout.buttons.addSlideToggle(inst, selector, pane, slide);
                    }
                    , addOpenBtn: function (selector, pane, slide) {
                        return $.layout.buttons.addOpen(inst, selector, pane, slide);
                    }
                    , addCloseBtn: function (selector, pane) {
                        return $.layout.buttons.addClose(inst, selector, pane);
                    }
                    , addPinBtn: function (selector, pane) {
                        return $.layout.buttons.addPin(inst, selector, pane);
                    }
                });

                // init state array to hold pin-buttons
                for (var i = 0; i < 4; i++) {
                    var pane = $.layout.buttons.config.borderPanes[i];
                    inst.state[pane].pins = [];
                }

                // auto-init buttons onLoad if option is enabled
                if (inst.options.autoBindCustomButtons)
                    $.layout.buttons.init(inst);
            }

            , _unload: function (inst) {
                // TODO: unbind all buttons???
            }

        };

// add initialization method to Layout's onLoad array of functions
        $.layout.onLoad.push($.layout.buttons._load);
//$.layout.onUnload.push( $.layout.buttons._unload );

    })(jQuery);


    /**
     * jquery.layout.browserZoom 1.0
     * $Date: 2011-12-29 08:00:00 (Thu, 29 Dec 2011) $
     *
     * Copyright (c) 2012
     *   Kevin Dalman (http://allpro.net)
     *
     * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
     * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
     *
     * @requires: UI Layout 1.3.0.rc30.1 or higher
     *
     * @see: http://groups.google.com/group/jquery-ui-layout
     *
     * TODO: Extend logic to handle other problematic zooming in browsers
     * TODO: Add hotkey/mousewheel bindings to _instantly_ respond to these zoom event
     */
    (function ($) {

// tell Layout that the plugin is available
        $.layout.plugins.browserZoom = true;

        $.layout.defaults.browserZoomCheckInterval = 1000;
        $.layout.optionsMap.layout.push("browserZoomCheckInterval");

        /*
     * browserZoom methods
     */
        $.layout.browserZoom = {
            _init: function (inst) {
                // abort if browser does not need this check
                if ($.layout.browserZoom.ratio() !== false)
                    $.layout.browserZoom._setTimer(inst);
            }

            , _setTimer: function (inst) {
                // abort if layout destroyed or browser does not need this check
                if (inst.destroyed)
                    return;
                var o = inst.options
                    , s = inst.state
                    // don't need check if inst has parentLayout, but check occassionally in case parent destroyed!
                    // MINIMUM 100ms interval, for performance
                    , ms = inst.hasParentLayout ? 5000 : Math.max(o.browserZoomCheckInterval, 100)
                ;
                // set the timer
                setTimeout(function () {
                        if (inst.destroyed || !o.resizeWithWindow)
                            return;
                        var d = $.layout.browserZoom.ratio();
                        if (d !== s.browserZoom) {
                            s.browserZoom = d;
                            inst.resizeAll();
                        }
                        // set a NEW timeout
                        $.layout.browserZoom._setTimer(inst);
                    }
                    , ms);
            }

            , ratio: function () {
                var w = window
                    , s = screen
                    , d = document
                    , dE = d.documentElement || d.body
                    , b = $.layout.browser
                    , v = b.version
                    , r, sW, cW
                ;
                // we can ignore all browsers that fire window.resize event onZoom
                if (!b.msie || v > 8)
                    return false; // don't need to track zoom
                if (s.deviceXDPI && s.systemXDPI) // syntax compiler hack
                    return calc(s.deviceXDPI, s.systemXDPI);
                // everything below is just for future reference!
                if (b.webkit && (r = d.body.getBoundingClientRect))
                    return calc((r.left - r.right), d.body.offsetWidth);
                if (b.webkit && (sW = w.outerWidth))
                    return calc(sW, w.innerWidth);
                if ((sW = s.width) && (cW = dE.clientWidth))
                    return calc(sW, cW);
                return false; // no match, so cannot - or don't need to - track zoom

                function calc(x, y) {
                    return (parseInt(x, 10) / parseInt(y, 10) * 100).toFixed();
                }
            }

        };
// add initialization method to Layout's onLoad array of functions
        $.layout.onReady.push($.layout.browserZoom._init);


    })(jQuery);


    (function ($) {

// Add a new "slideOffscreen" effect
        if ($.effects) {

            // add an option so initClosed and initHidden will work
            $.layout.defaults.panes.useOffscreenClose = false; // user must enable when needed
            /* set the new animation as the default for all panes
         $.layout.defaults.panes.fxName = "slideOffscreen";
         */

            if ($.layout.plugins)
                $.layout.plugins.effects.slideOffscreen = true;

            // dupe 'slide' effect defaults as new effect defaults
            $.layout.effects.slideOffscreen = $.extend(true, {}, $.layout.effects.slide);

            // add new effect to jQuery UI
            $.effects.slideOffscreen = function (o) {
                return this.queue(function () {

                    var fx = $.effects
                        , opt = o.options
                        , $el = $(this)
                        , pane = $el.data('layoutEdge')
                        , state = $el.data('parentLayout').state
                        , dist = state[pane].size
                        , s = this.style
                        , props = ['top', 'bottom', 'left', 'right']
                        // Set options
                        , mode = fx.setMode($el, opt.mode || 'show') // Set Mode
                        , show = (mode == 'show')
                        , dir = opt.direction || 'left' // Default Direction
                        , ref = (dir == 'up' || dir == 'down') ? 'top' : 'left'
                        , pos = (dir == 'up' || dir == 'left')
                        , offscrn = $.layout.config.offscreenCSS || {}
                        , keyLR = $.layout.config.offscreenReset
                        , keyTB = 'offscreenResetTop' // only used internally
                        , animation = {}
                    ;
                    // Animation settings
                    animation[ref] = (show ? (pos ? '+=' : '-=') : (pos ? '-=' : '+=')) + dist;

                    if (show) { // show() animation, so save top/bottom but retain left/right set when 'hidden'
                        $el.data(keyTB, {top: s.top, bottom: s.bottom});

                        // set the top or left offset in preparation for animation
                        // Note: ALL animations work by shifting the top or left edges
                        if (pos) { // top (north) or left (west)
                            $el.css(ref, isNaN(dist) ? "-" + dist : -dist); // Shift outside the left/top edge
                        } else { // bottom (south) or right (east) - shift all the way across container
                            if (dir === 'right')
                                $el.css({left: state.container.layoutWidth, right: 'auto'});
                            else // dir === bottom
                                $el.css({top: state.container.layoutHeight, bottom: 'auto'});
                        }
                        // restore the left/right setting if is a top/bottom animation
                        if (ref === 'top')
                            $el.css($el.data(keyLR) || {});
                    } else { // hide() animation, so save ALL CSS
                        $el.data(keyTB, {top: s.top, bottom: s.bottom});
                        $el.data(keyLR, {left: s.left, right: s.right});
                    }

                    // Animate
                    $el.show().animate(animation, {
                        queue: false, duration: o.duration, easing: opt.easing, complete: function () {
                            // Restore top/bottom
                            if ($el.data(keyTB))
                                $el.css($el.data(keyTB)).removeData(keyTB);
                            if (show) // Restore left/right too
                                $el.css($el.data(keyLR) || {}).removeData(keyLR);
                            else // Move the pane off-screen (left: -99999, right: 'auto')
                                $el.css(offscrn);

                            if (o.callback)
                                o.callback.apply(this, arguments); // Callback
                            $el.dequeue();
                        }
                    });

                });
            };

        }

    })(jQuery);


    (function ($) {
        var _ = $.layout;

// make sure the callbacks branch exists
        if (!_.callbacks)
            _.callbacks = {};

        _.callbacks.resizePaneAccordions = function (x, ui) {
            // may be called EITHER from layout-pane.onresize OR tabs.show
            var $P = ui.jquery ? ui : $(ui.newPanel || ui.panel);
            // find all VISIBLE accordions inside this pane and resize them
            $P.find(".ui-accordion:visible").each(function () {
                var $E = $(this);
                if ($E.data("accordion"))  // jQuery < 1.9
                    $E.accordion("resize");
                if ($E.data("ui-accordion")) // jQuery >= 1.9
                    $E.accordion("refresh");
            });
        };
    })(jQuery);


    (function ($) {
        $.layout.callbacks.resizeDataTables = function (x, ui) {
            // may be called EITHER from layout-pane.onresize OR tabs.show
            var oPane = ui.jquery ? ui[0] : ui.panel;
            // cannot resize if the pane is currently closed or hidden
            if (!$(oPane).is(":visible"))
                return;
            // find all data tables inside this pane and resize them
            $($.fn.dataTable.fnTables(true)).each(function (i, table) {
                if ($.contains(oPane, table)) {
                    $(table).dataTable().fnAdjustColumnSizing();
                }
            });
        };
    })(jQuery);


    (function ($) {
        var _ = $.layout;

// make sure the callbacks branch exists
        if (!_.callbacks)
            _.callbacks = {};

// this callback is bound to the tabs.show event OR to layout-pane.onresize event
        _.callbacks.resizeTabLayout = function (x, ui) {
            // may be called EITHER from layout-pane.onresize OR tabs.show/activate
            var $P = ui.jquery ? ui : $(ui.newPanel || ui.panel);
            // find all VISIBLE layouts inside this pane/panel and resize them
            $P.filter(":visible").find(".ui-layout-container:visible").addBack().each(function () {
                var layout = $(this).data("layout");
                if (layout) {
                    layout.options.resizeWithWindow = false; // set option just in case not already set
                    layout.resizeAll();
                }
            });
        };
    })
    (jQuery);

    return jQuery;
}));

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