/*
 * jQuery UI @VERSION
 *
 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 *
 * $Date: 2008-05-04 16:52:15 +0200 (So, 04 Mai 2008) $
 * $Rev: 5419 $
 */
;(function($) {
    
    $.ui = $.ui || {};
    
    // Add methods that are vital for all mouse interaction stuff
    // (plugin registering)
    $.extend($.ui, {
        plugin: {
            add: function(module, option, set) {
                var proto = $.ui[module].prototype;
                for(var i in set) {
                    proto.plugins[i] = proto.plugins[i] || [];
                    proto.plugins[i].push([option, set[i]]);
                }
            },
            call: function(instance, name, args) {
                var set = instance.plugins[name];
                if(!set) { return; }
                
                for (var i = 0; i < set.length; i++) {
                    if (instance.options[set[i][0]]) {
                        set[i][1].apply(instance.element, args);
                    }
                }
            }   
        },
        cssCache: {},
        css: function(name) {
            if ($.ui.cssCache[name]) { return $.ui.cssCache[name]; }
            var tmp = $('<div class="ui-resizable-gen">').addClass(name).css({position:'absolute', top:'-5000px', left:'-5000px', display:'block'}).appendTo('body');
            
            //if (!$.browser.safari)
                //tmp.appendTo('body'); 
            
            //Opera and Safari set width and height to 0px instead of auto
            //Safari returns rgba(0,0,0,0) when bgcolor is not set
            $.ui.cssCache[name] = !!(
                (!(/auto|default/).test(tmp.css('cursor')) || (/^[1-9]/).test(tmp.css('height')) || (/^[1-9]/).test(tmp.css('width')) || 
                !(/none/).test(tmp.css('backgroundImage')) || !(/transparent|rgba\(0, 0, 0, 0\)/).test(tmp.css('backgroundColor')))
            );
            try { $('body').get(0).removeChild(tmp.get(0)); } catch(e){}
            return $.ui.cssCache[name];
        },
        disableSelection: function(e) {
            e.unselectable = "on";
            e.onselectstart = function() { return false; };
            if (e.style) { e.style.MozUserSelect = "none"; }
        },
        enableSelection: function(e) {
            e.unselectable = "off";
            e.onselectstart = function() { return true; };
            if (e.style) { e.style.MozUserSelect = ""; }
        },
        hasScroll: function(e, a) {
            var scroll = /top/.test(a||"top") ? 'scrollTop' : 'scrollLeft', has = false;
            if (e[scroll] > 0) return true; e[scroll] = 1;
            has = e[scroll] > 0 ? true : false; e[scroll] = 0;
            return has;
        }
    });
    
    
    /** jQuery core modifications and additions **/
    
    var _remove = $.fn.remove;
    $.fn.remove = function() {
        $("*", this).add(this).trigger("remove");
        return _remove.apply(this, arguments );
    };
    
    // $.widget is a factory to create jQuery plugins
    // taking some boilerplate code out of the plugin code
    // created by Scott González and Jörn Zaefferer
    function getter(namespace, plugin, method) {
        var methods = $[namespace][plugin].getter || [];
        methods = (typeof methods == "string" ? methods.split(/,?\s+/) : methods);
        return ($.inArray(method, methods) != -1);
    };
    
    var widgetPrototype = {
        init: function() {},
        destroy: function() {},
        
        getData: function(e, key) {
            return this.options[key];
        },
        setData: function(e, key, value) {
            this.options[key] = value;
        },
        
        enable: function() {
            this.setData(null, 'disabled', false);
        },
        disable: function() {
            this.setData(null, 'disabled', true);
        }
    };
    
    $.widget = function(name, prototype) {
        var namespace = name.split(".")[0];
        name = name.split(".")[1];
        // create plugin method
        $.fn[name] = function(options, data) {
            var isMethodCall = (typeof options == 'string'),
                args = arguments;
            
            if (isMethodCall && getter(namespace, name, options)) {
                var instance = $.data(this[0], name);
                return (instance ? instance[options](data) : undefined); 
            }
            
            return this.each(function() {
                var instance = $.data(this, name);
                if (!instance) {
                    $.data(this, name, new $[namespace][name](this, options));
                } else if (isMethodCall) {
                    instance[options].apply(instance, $.makeArray(args).slice(1));
                }
            });
        };
        
        // create widget constructor
        $[namespace][name] = function(element, options) {
            var self = this;
            
            this.options = $.extend({}, $[namespace][name].defaults, options);
            this.element = $(element)
                .bind('setData.' + name, function(e, key, value) {
                    return self.setData(e, key, value);
                })
                .bind('getData.' + name, function(e, key) {
                    return self.getData(e, key);
                })
                .bind('remove', function() {
                    return self.destroy();
                });
            this.init();
        };
        
        // add widget prototype
        $[namespace][name].prototype = $.extend({}, widgetPrototype, prototype);
    };
    
    
    /** Mouse Interaction Plugin **/
    
    $.widget("ui.mouse", {
        init: function() {
            var self = this;
            
            this.element
                .bind('mousedown.mouse', function() { return self.click.apply(self, arguments); })
                .bind('mouseup.mouse', function() { (self.timer && clearInterval(self.timer)); })
                .bind('click.mouse', function() { if(self.initialized) { self.initialized = false; return false; } });
            //Prevent text selection in IE
            if ($.browser.msie) {
                this.unselectable = this.element.attr('unselectable');
                this.element.attr('unselectable', 'on');
            }
        },
        destroy: function() {
            this.element.unbind('.mouse').removeData("mouse");
            ($.browser.msie && this.element.attr('unselectable', this.unselectable));
        },
        trigger: function() { return this.click.apply(this, arguments); },
        click: function(e) {
        
            if(    e.which != 1 //only left click starts dragging
                || $.inArray(e.target.nodeName.toLowerCase(), this.options.dragPrevention || []) != -1 // Prevent execution on defined elements
                || (this.options.condition && !this.options.condition.apply(this.options.executor || this, [e, this.element])) //Prevent execution on condition
            ) { return true; }
        
            var self = this;
            this.initialized = false;
            var initialize = function() {
                self._MP = { left: e.pageX, top: e.pageY }; // Store the click mouse position
                $(document).bind('mouseup.mouse', function() { return self.stop.apply(self, arguments); });
                $(document).bind('mousemove.mouse', function() { return self.drag.apply(self, arguments); });
        
                if(!self.initalized && Math.abs(self._MP.left-e.pageX) >= self.options.distance || Math.abs(self._MP.top-e.pageY) >= self.options.distance) {
                    (self.options.start && self.options.start.call(self.options.executor || self, e, self.element));
                    (self.options.drag && self.options.drag.call(self.options.executor || self, e, this.element)); //This is actually not correct, but expected
                    self.initialized = true;
                }
            };

            if(this.options.delay) {
                if(this.timer) { clearInterval(this.timer); }
                this.timer = setTimeout(initialize, this.options.delay);
            } else {
                initialize();
            }
                
            return false;
            
        },
        stop: function(e) {
            
            if(!this.initialized) {
                return $(document).unbind('mouseup.mouse').unbind('mousemove.mouse');
            }

            (this.options.stop && this.options.stop.call(this.options.executor || this, e, this.element));
            
            $(document).unbind('mouseup.mouse').unbind('mousemove.mouse');
            return false;
            
        },
        drag: function(e) {

            var o = this.options;
            if ($.browser.msie && !e.button) {
                return this.stop.call(this, e); // IE mouseup check
            }
            
            if(!this.initialized && (Math.abs(this._MP.left-e.pageX) >= o.distance || Math.abs(this._MP.top-e.pageY) >= o.distance)) {
                (o.start && o.start.call(o.executor || this, e, this.element));
                this.initialized = true;
            } else {
                if(!this.initialized) { return false; }
            }

            (o.drag && o.drag.call(this.options.executor || this, e, this.element));
            return false;
            
        }
    });
    
})(jQuery);
/*
 * jQuery UI Draggable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Draggables
 *
 * Depends:
 *  ui.core.js
 *
 * Revision: $Id: ui.draggable.js 5433 2008-05-04 20:07:17Z joern.zaefferer $
 */

;(function($) {
    
    $.widget("ui.draggable", {
        init: function() {
            
            //Initialize needed constants
            var o = this.options;

            //Initialize mouse events for interaction
            this.element.mouse({
                executor: this,
                delay: o.delay,
                distance: o.distance,
                dragPrevention: o.cancel,
                start: this.start,
                stop: this.stop,
                drag: this.drag,
                condition: function(e) {
                    var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;
                    if(!handle) $(this.options.handle, this.element).each(function() { if(this == e.target) handle = true; });
                    return !(e.target.className.indexOf("ui-resizable-handle") != -1 || this.options.disabled) && handle;
                }
            });
            
            //Position the node
            if(o.helper == 'original' && !(/(relative|absolute|fixed)/).test(this.element.css('position')))
                this.element.css('position', 'relative');
            
        },
        start: function(e) {

            var o = this.options;
            if($.ui.ddmanager) $.ui.ddmanager.current = this;
            
            //Create and append the visible helper
            this.helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [e])) : (o.helper == 'clone' ? this.element.clone() : this.element);
            if(!this.helper.parents('body').length) this.helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo));
            if(!this.helper.css("position") || this.helper.css("position") == "static") this.helper.css("position", "absolute");

            /*
             * - Position generation -
             * This block generates everything position related - it's the core of draggables.
             */
            
            this.margins = {                                                                                //Cache the margins
                left: (parseInt(this.element.css("marginLeft"),10) || 0),
                top: (parseInt(this.element.css("marginTop"),10) || 0)
            };      

            this.cssPosition = this.helper.css("position");                                                 //Store the helper's css position
            this.offset = this.element.offset();                                                            //The element's absolute position on the page
            this.offset = {                                                                                 //Substract the margins from the element's absolute offset
                top: this.offset.top - this.margins.top,
                left: this.offset.left - this.margins.left
            };

            this.offset.click = {                                                                           //Where the click happened, relative to the element
                left: e.pageX - this.offset.left,
                top: e.pageY - this.offset.top
            };
    
            this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset();            //Get the offsetParent and cache its position
            this.offset.parent = {                                                                          //Store its position plus border
                top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
                left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
            };
    
            var p = this.element.position();                                                                //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helpers
            this.offset.relative = this.cssPosition == "relative" ? {
                top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.offsetParent[0].scrollTop,
                left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.offsetParent[0].scrollLeft
            } : { top: 0, left: 0 };
        
            this.originalPosition = this.generatePosition(e);                                               //Generate the original position
            this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Cache the helper size

            if(o.cursorAt) {
                if(o.cursorAt.left != undefined) this.offset.click.left = o.cursorAt.left;
                if(o.cursorAt.right != undefined) this.offset.click.left = this.helperProportions.width - o.cursorAt.right;
                if(o.cursorAt.top != undefined) this.offset.click.top = o.cursorAt.top;
                if(o.cursorAt.bottom != undefined) this.offset.click.top = this.helperProportions.height - o.cursorAt.bottom;
            }


            /*
             * - Position constraining -
             * Here we prepare position constraining like grid and containment.
             */ 
            
            if(o.containment) {
                if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
                if(o.containment == 'document') this.containment = [0,0,$(document).width(), ($(document).height() || document.body.parentNode.scrollHeight)];
                if(!(/^(document|window|parent)$/).test(o.containment)) {
                    var ce = $(o.containment)[0];
                    var co = $(o.containment).offset();

                    this.containment = [
                        co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left,
                        co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top,
                        co.left+Math.max(ce.scrollWidth,ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
                        co.top+Math.max(ce.scrollHeight,ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
                    ];
                }
            }


            //Call plugins and callbacks
            this.propagate("start", e);

            this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Recache the helper size
            if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);

            return false;

        },
        convertPositionTo: function(d, pos) {
            if(!pos) pos = this.position;
            var mod = d == "absolute" ? 1 : -1;
            return {
                top: (
                    pos.top                                                                 // the calculated relative position
                    + this.offset.relative.top  * mod                                       // Only for relative positioned nodes: Relative offset from element to offset parent
                    + this.offset.parent.top * mod                                          // The offsetParent's offset without borders (offset + border)
                    - (this.cssPosition == "fixed" ? 0 : this.offsetParent[0].scrollTop) * mod  // The offsetParent's scroll position, not if the element is fixed
                    + this.margins.top * mod                                                //Add the margin (you don't want the margin counting in intersection methods)
                ),
                left: (
                    pos.left                                                                // the calculated relative position
                    + this.offset.relative.left * mod                                       // Only for relative positioned nodes: Relative offset from element to offset parent
                    + this.offset.parent.left * mod                                         // The offsetParent's offset without borders (offset + border)
                    - (this.cssPosition == "fixed" ? 0 : this.offsetParent[0].scrollLeft) * mod // The offsetParent's scroll position, not if the element is fixed
                    + this.margins.left * mod                                               //Add the margin (you don't want the margin counting in intersection methods)
                )
            };
        },
        generatePosition: function(e) {
            
            var o = this.options;
            var position = {
                top: (
                    e.pageY                                                                 // The absolute mouse position
                    - this.offset.click.top                                                 // Click offset (relative to the element)
                    - this.offset.relative.top                                              // Only for relative positioned nodes: Relative offset from element to offset parent
                    - this.offset.parent.top                                                // The offsetParent's offset without borders (offset + border)
                    + (this.cssPosition == "fixed" ? 0 : this.offsetParent[0].scrollTop)    // The offsetParent's scroll position, not if the element is fixed
                ),
                left: (
                    e.pageX                                                                 // The absolute mouse position
                    - this.offset.click.left                                                // Click offset (relative to the element)
                    - this.offset.relative.left                                             // Only for relative positioned nodes: Relative offset from element to offset parent
                    - this.offset.parent.left                                               // The offsetParent's offset without borders (offset + border)
                    + (this.cssPosition == "fixed" ? 0 : this.offsetParent[0].scrollLeft)   // The offsetParent's scroll position, not if the element is fixed
                )
            };

            if(!this.originalPosition) return position;                                     //If we are not dragging yet, we won't check for options
            
            
            /*
             * - Position constraining -
             * Constrain the position to a mix of grid, containment.
             */
            if(this.containment) {
                if(position.left < this.containment[0]) position.left = this.containment[0];
                if(position.top < this.containment[1]) position.top = this.containment[1];
                if(position.left > this.containment[2]) position.left = this.containment[2];
                if(position.top > this.containment[3]) position.top = this.containment[3];
            }
            
            if(o.grid) {
                var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1];
                position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

                var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0];
                position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
            }
            
            return position;
        },
        drag: function(e) {

            //Compute the helpers position
            this.position = this.generatePosition(e);
            this.positionAbs = this.convertPositionTo("absolute");

            //Call plugins and callbacks and use the resulting position if something is returned        
            this.position = this.propagate("drag", e) || this.position;
            
            if(!this.options.axis || this.options.axis == "x") this.helper[0].style.left = this.position.left+'px';
            if(!this.options.axis || this.options.axis == "y") this.helper[0].style.top = this.position.top+'px';
            if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
            return false;

        },
        stop: function(e) {
        
            //If we are using droppables, inform the manager about the drop
            if ($.ui.ddmanager && !this.options.dropBehaviour)
                $.ui.ddmanager.drop(this, e);
                
            if(this.options.revert) {
                var self = this;
                $(this.helper).animate(this.originalPosition, parseInt(this.options.revert, 10) || 500, function() {
                    self.propagate("stop", e);
                    self.clear();
                });
            } else {
                this.propagate("stop", e);
                this.clear();
            }

            return false;
            
        },
        clear: function() {
            if(this.options.helper != 'original' && !this.cancelHelperRemoval) this.helper.remove();
            if($.ui.ddmanager) $.ui.ddmanager.current = null;
            this.helper = null;
            this.cancelHelperRemoval = false;
        },
        
        // From now on bulk stuff - mainly helpers
        plugins: {},
        ui: function(e) {
            return {
                helper: this.helper,
                position: this.position,
                absolutePosition: this.positionAbs,
                options: this.options           
            };
        },
        propagate: function(n,e) {
            $.ui.plugin.call(this, n, [e, this.ui()]);
            return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [e, this.ui()], this.options[n]);
        },
        destroy: function() {
            if(!this.element.data('draggable')) return;
            this.element.removeData("draggable").unbind(".draggable").mouse("destroy");
        },
        enable: function() {
            this.options.disabled = false;
        },
        disable: function() {
            this.options.disabled = true;
        }
    });
    
    $.ui.draggable.defaults = {
        helper: "original",
        appendTo: "parent",
        cancel: ['input','textarea','button','select','option'],
        distance: 1,
        delay: 0
    };
    
    
    $.ui.plugin.add("draggable", "cursor", {
        start: function(e, ui) {
            var t = $('body');
            if (t.css("cursor")) ui.options._cursor = t.css("cursor");
            t.css("cursor", ui.options.cursor);
        },
        stop: function(e, ui) {
            if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
        }
    });

    $.ui.plugin.add("draggable", "zIndex", {
        start: function(e, ui) {
            var t = $(ui.helper);
            if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
            t.css('zIndex', ui.options.zIndex);
        },
        stop: function(e, ui) {
            if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
        }
    });

    $.ui.plugin.add("draggable", "opacity", {
        start: function(e, ui) {
            var t = $(ui.helper);
            if(t.css("opacity")) ui.options._opacity = t.css("opacity");
            t.css('opacity', ui.options.opacity);
        },
        stop: function(e, ui) {
            if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
        }
    });
    
    $.ui.plugin.add("draggable", "iframeFix", {
        start: function(e, ui) {
            $(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() {                    
                $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>')
                .css({
                    width: this.offsetWidth+"px", height: this.offsetHeight+"px",
                    position: "absolute", opacity: "0.001", zIndex: 1000
                })
                .css($(this).offset())
                .appendTo("body");
            });
        },
        stop: function(e, ui) {
            $("div.DragDropIframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers  
        }
    });
    
    $.ui.plugin.add("draggable", "scroll", {
        start: function(e, ui) {
            var o = ui.options;
            var i = $(this).data("draggable");
            o.scrollSensitivity = o.scrollSensitivity || 20;
            o.scrollSpeed       = o.scrollSpeed || 20;

            i.overflowY = function(el) {
                do { if(/auto|scroll/.test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-y'))) return el; el = el.parent(); } while (el[0].parentNode);
                return $(document);
            }(this);
            i.overflowX = function(el) {
                do { if(/auto|scroll/.test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-x'))) return el; el = el.parent(); } while (el[0].parentNode);
                return $(document);
            }(this);
            
            if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') i.overflowYOffset = i.overflowY.offset();
            if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') i.overflowXOffset = i.overflowX.offset();
            
        },
        drag: function(e, ui) {
            
            var o = ui.options;
            var i = $(this).data("draggable");

            if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') {
                if((i.overflowYOffset.top + i.overflowY[0].offsetHeight) - e.pageY < o.scrollSensitivity)
                    i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed;
                if(e.pageY - i.overflowYOffset.top < o.scrollSensitivity)
                    i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed;
                                
            } else {
                if(e.pageY - $(document).scrollTop() < o.scrollSensitivity)
                    $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
                if($(window).height() - (e.pageY - $(document).scrollTop()) < o.scrollSensitivity)
                    $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
            }
            
            if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') {
                if((i.overflowXOffset.left + i.overflowX[0].offsetWidth) - e.pageX < o.scrollSensitivity)
                    i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed;
                if(e.pageX - i.overflowXOffset.left < o.scrollSensitivity)
                    i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft - o.scrollSpeed;
            } else {
                if(e.pageX - $(document).scrollLeft() < o.scrollSensitivity)
                    $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
                if($(window).width() - (e.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
                    $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
            }

        }
    });
    
    $.ui.plugin.add("draggable", "snap", {
        start: function(e, ui) {
            
            var inst = $(this).data("draggable");
            inst.snapElements = [];
            $(ui.options.snap === true ? '.ui-draggable' : ui.options.snap).each(function() {
                var $t = $(this); var $o = $t.offset();
                if(this != inst.element[0]) inst.snapElements.push({
                    item: this,
                    width: $t.outerWidth(), height: $t.outerHeight(),
                    top: $o.top, left: $o.left
                });
            });
            
        },
        drag: function(e, ui) {

            var inst = $(this).data("draggable");
            var d = ui.options.snapTolerance || 20;
            var x1 = ui.absolutePosition.left, x2 = x1 + inst.helperProportions.width,
                y1 = ui.absolutePosition.top, y2 = y1 + inst.helperProportions.height;

            for (var i = inst.snapElements.length - 1; i >= 0; i--){

                var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, 
                    t = inst.snapElements[i].top, b = t + inst.snapElements[i].height;

                //Yes, I know, this is insane ;)
                if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) continue;

                if(ui.options.snapMode != 'inner') {
                    var ts = Math.abs(t - y2) <= 20;
                    var bs = Math.abs(b - y1) <= 20;
                    var ls = Math.abs(l - x2) <= 20;
                    var rs = Math.abs(r - x1) <= 20;
                    if(ts) ui.position.top = inst.convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top;
                    if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b, left: 0 }).top;
                    if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left;
                    if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r }).left;
                }
                
                if(ui.options.snapMode != 'outer') {
                    var ts = Math.abs(t - y1) <= 20;
                    var bs = Math.abs(b - y2) <= 20;
                    var ls = Math.abs(l - x1) <= 20;
                    var rs = Math.abs(r - x2) <= 20;
                    if(ts) ui.position.top = inst.convertPositionTo("relative", { top: t, left: 0 }).top;
                    if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top;
                    if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l }).left;
                    if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left;
                }

            };
        }
    });
    
    $.ui.plugin.add("draggable", "connectToSortable", {
        start: function(e,ui) {
            var inst = $(this).data("draggable");
            inst.sortable = $.data($(ui.options.connectToSortable)[0], 'sortable');
            inst.sortableOffset = inst.sortable.element.offset();
            inst.sortableOuterWidth = inst.sortable.element.outerWidth();
            inst.sortableOuterHeight = inst.sortable.element.outerHeight();
            if(inst.sortable.options.revert) inst.sortable.shouldRevert = true;
        },
        stop: function(e,ui) {
            //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
            var instDraggable = $(this).data("draggable");
            var inst = instDraggable.sortable;
            
            if(inst.isOver) {
                inst.isOver = 0;
                instDraggable.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
                inst.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
                if(inst.shouldRevert) inst.options.revert = true; //revert here
                inst.stop(e);
                inst.options.helper = "original";
            }
        },
        drag: function(e,ui) {
            //This is handy: We reuse the intersectsWith method for checking if the current draggable helper
            //intersects with the sortable container
            var instDraggable = $(this).data("draggable");
            var inst = instDraggable.sortable;
            instDraggable.position.absolute = ui.absolutePosition; //Sorry, this is an ugly API fix
            
            if(inst.intersectsWith.call(instDraggable, {
                left: instDraggable.sortableOffset.left, top: instDraggable.sortableOffset.top,
                width: instDraggable.sortableOuterWidth, height: instDraggable.sortableOuterHeight
            })) {
                //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
                if(!inst.isOver) {
                    inst.isOver = 1;
                    
                    //Cache the width/height of the new helper
                    var height = inst.options.placeholderElement ? $(inst.options.placeholderElement, $(inst.options.items, inst.element)).innerHeight() : $(inst.options.items, inst.element).innerHeight();
                    var width = inst.options.placeholderElement ? $(inst.options.placeholderElement, $(inst.options.items, inst.element)).innerWidth() : $(inst.options.items, inst.element).innerWidth();

                    //Now we fake the start of dragging for the sortable instance,
                    //by cloning the list group item, appending it to the sortable and using it as inst.currentItem
                    //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one)
                    inst.currentItem = $(this).clone().appendTo(inst.element);
                    inst.options.helper = function() { return ui.helper[0]; };
                    inst.start(e);
                    
                    //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
                    inst.clickOffset.top = instDraggable.offset.click.top;
                    inst.clickOffset.left = instDraggable.offset.click.left;
                    inst.offset.left -= ui.absolutePosition.left - inst.position.absolute.left;
                    inst.offset.top -= ui.absolutePosition.top - inst.position.absolute.top;
                    
                    //Do a nifty little helper animation: Animate it to the portlet's size (just takes the first 'li' element in the sortable now)
                    inst.helperProportions = {width: width, height: height}; //We have to reset the helper proportions, because we are doing our animation there
                    ui.helper.animate({height: height, width: width}, 500);
                    instDraggable.propagate("toSortable", e);
                
                }

                //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable
                if(inst.currentItem) inst.drag(e);
                
            } else {
                
                //If it doesn't intersect with the sortable, and it intersected before,
                //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval
                if(inst.isOver) {
                    inst.isOver = 0;
                    inst.cancelHelperRemoval = true;
                    inst.options.revert = false; //No revert here
                    inst.stop(e);
                    inst.options.helper = "original";
                    
                    //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
                    inst.currentItem.remove();
                    inst.placeholder.remove();
                    
                    ui.helper.animate({ height: this.innerHeight(), width: this.innerWidth() }, 500);
                    instDraggable.propagate("fromSortable", e);
                }
                
            };
        }
    });
    
    $.ui.plugin.add("draggable", "stack", {
        start: function(e,ui) {
            var group = $.makeArray($(ui.options.stack.group)).sort(function(a,b) {
                return (parseInt($(a).css("zIndex")) || ui.options.stack.min) - (parseInt($(b).css("zIndex")) || ui.options.stack.min);
            });
            
            $(group).each(function(i) {
                this.style.zIndex = ui.options.stack.min + i;
            });
            
            this[0].style.zIndex = ui.options.stack.min + group.length;
        }
    });
    
})(jQuery);/*
 * jQuery UI Sortable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Sortables
 *
 * Depends:
 *  ui.core.js
 *
 * Revision: $Id: ui.sortable.js 5433 2008-05-04 20:07:17Z joern.zaefferer $
 */
;(function($) {
    
    function contains(a, b) { 
        var safari2 = $.browser.safari && $.browser.version < 522; 
        if (a.contains && !safari2) { 
            return a.contains(b); 
        } 
        if (a.compareDocumentPosition) 
            return !!(a.compareDocumentPosition(b) & 16); 
        while (b = b.parentNode) 
              if (b == a) return true; 
        return false; 
    };
    
    $.widget("ui.sortable", {
        init: function() {

            var o = this.options;
            this.containerCache = {};
            this.element.addClass("ui-sortable");
        
            //Get the items
            this.refresh();
    
            //Let's determine if the items are floating
            this.floating = this.items.length ? (/left|right/).test(this.items[0].item.css('float')) : false;
            
            //Let's determine the parent's offset
            if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
            this.offset = this.element.offset();
    
            //Initialize mouse events for interaction
            this.element.mouse({
                executor: this,
                delay: o.delay,
                distance: o.distance || 1,
                dragPrevention: o.prevention ? o.prevention.toLowerCase().split(',') : ['input','textarea','button','select','option'],
                start: this.start,
                stop: this.stop,
                drag: this.drag,
                condition: function(e) {
    
                    if(this.options.disabled || this.options.type == 'static') return false;
    
                    //Find out if the clicked node (or one of its parents) is a actual item in this.items
                    var currentItem = null, nodes = $(e.target).parents().each(function() { 
                        if($.data(this, 'sortable-item')) {
                            currentItem = $(this);
                            return false;
                        }
                    });
                    if($.data(e.target, 'sortable-item')) currentItem = $(e.target);
                    
                    if(!currentItem) return false;  
                    if(this.options.handle) {
                        var validHandle = false;
                        $(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
                        if(!validHandle) return false;
                    }
                        
                    this.currentItem = currentItem;
                    return true;
    
                }
            });
            
        },
        plugins: {},
        ui: function(inst) {
            return {
                helper: (inst || this)["helper"],
                placeholder: (inst || this)["placeholder"] || $([]),
                position: (inst || this)["position"].current,
                absolutePosition: (inst || this)["position"].absolute,
                instance: this,
                options: this.options,
                element: this.element,
                item: (inst || this)["currentItem"],
                sender: inst ? inst.element : null
            };      
        },
        propagate: function(n,e,inst) {
            $.ui.plugin.call(this, n, [e, this.ui(inst)]);
            this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
        },
        serialize: function(o) {
            
            var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
            var str = []; o = o || {};
            
            items.each(function() {
                var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
                if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
            });
            
            return str.join('&');
            
        },
        toArray: function(attr) {
            var items = $(this.options.items, this.element).not('.ui-sortable-helper'); //Only the items of the sortable itself
            var ret = [];

            items.each(function() { ret.push($(this).attr(attr || 'id')); });
            return ret;
        },
        enable: function() {
            this.element.removeClass("ui-sortable-disabled");
            this.options.disabled = false;
        },
        disable: function() {
            this.element.addClass("ui-sortable-disabled");
            this.options.disabled = true;
        },
        /* Be careful with the following core functions */
        intersectsWith: function(item) {
            
            var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
            y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
            var l = item.left, r = l + item.width, 
            t = item.top, b = t + item.height;

            if(this.options.tolerance == "pointer") {
                return (y1 + this.clickOffset.top > t && y1 + this.clickOffset.top < b && x1 + this.clickOffset.left > l && x1 + this.clickOffset.left < r);
            } else {
            
                return (l < x1 + (this.helperProportions.width / 2) // Right Half
                    && x2 - (this.helperProportions.width / 2) < r // Left Half
                    && t < y1 + (this.helperProportions.height / 2) // Bottom Half
                    && y2 - (this.helperProportions.height / 2) < b ); // Top Half
            
            }
            
        },
        intersectsWithEdge: function(item) {    
            var x1 = this.position.absolute.left, x2 = x1 + this.helperProportions.width,
                y1 = this.position.absolute.top, y2 = y1 + this.helperProportions.height;
            var l = item.left, r = l + item.width, 
                t = item.top, b = t + item.height;

            if(this.options.tolerance == "pointer") {

                if(!(y1 + this.clickOffset.top > t && y1 + this.clickOffset.top < b && x1 + this.clickOffset.left > l && x1 + this.clickOffset.left < r)) return false;
                
                if(this.floating) {
                    if(x1 + this.clickOffset.left > l && x1 + this.clickOffset.left < l + item.width/2) return 2;
                    if(x1 + this.clickOffset.left > l+item.width/2 && x1 + this.clickOffset.left < r) return 1;
                } else {
                    if(y1 + this.clickOffset.top > t && y1 + this.clickOffset.top < t + item.height/2) return 2;
                    if(y1 + this.clickOffset.top > t+item.height/2 && y1 + this.clickOffset.top < b) return 1;
                }

            } else {
            
                if (!(l < x1 + (this.helperProportions.width / 2) // Right Half
                    && x2 - (this.helperProportions.width / 2) < r // Left Half
                    && t < y1 + (this.helperProportions.height / 2) // Bottom Half
                    && y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
                
                if(this.floating) {
                    if(x2 > l && x1 < l) return 2; //Crosses left edge
                    if(x1 < r && x2 > r) return 1; //Crosses right edge
                } else {
                    if(y2 > t && y1 < t) return 1; //Crosses top edge
                    if(y1 < b && y2 > b) return 2; //Crosses bottom edge
                }
            
            }
            
            return false;
            
        },
        //This method checks approximately if the item is dragged in a container, but doesn't touch any items
        inEmptyZone: function(container) {

            if(!$(container.options.items, container.element).length) {
                return container.options.dropOnEmpty ? true : false;
            };

            var last = $(container.options.items, container.element).not('.ui-sortable-helper'); last = $(last[last.length-1]);
            var top = last.offset()[this.floating ? 'left' : 'top'] + last[0][this.floating ? 'offsetWidth' : 'offsetHeight'];
            return (this.position.absolute[this.floating ? 'left' : 'top'] > top);
        },
        refresh: function() {
            this.refreshItems();
            this.refreshPositions();
        },
        refreshItems: function() {
            
            this.items = [];
            this.containers = [this];
            var items = this.items;
            var queries = [$(this.options.items, this.element)];
            
            if(this.options.connectWith) {
                for (var i = this.options.connectWith.length - 1; i >= 0; i--){
                    var cur = $(this.options.connectWith[i]);
                    for (var j = cur.length - 1; j >= 0; j--){
                        var inst = $.data(cur[j], 'sortable');
                        if(inst && !inst.options.disabled) {
                            queries.push($(inst.options.items, inst.element));
                            this.containers.push(inst);
                        }
                    };
                };
            }

            for (var i = queries.length - 1; i >= 0; i--){
                queries[i].each(function() {
                    $.data(this, 'sortable-item', true); // Data for target checking (mouse manager)
                    items.push({
                        item: $(this),
                        width: 0, height: 0,
                        left: 0, top: 0
                    });
                });
            };

        },
        refreshPositions: function(fast) {
            for (var i = this.items.length - 1; i >= 0; i--){
                var t = this.items[i].item;
                if(!fast) this.items[i].width = (this.options.toleranceElement ? $(this.options.toleranceElement, t) : t).outerWidth();
                if(!fast) this.items[i].height = (this.options.toleranceElement ? $(this.options.toleranceElement, t) : t).outerHeight();
                var p = (this.options.toleranceElement ? $(this.options.toleranceElement, t) : t).offset();
                this.items[i].left = p.left;
                this.items[i].top = p.top;
            };
            for (var i = this.containers.length - 1; i >= 0; i--){
                var p =this.containers[i].element.offset();
                this.containers[i].containerCache.left = p.left;
                this.containers[i].containerCache.top = p.top;
                this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
                this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
            };
        },
        destroy: function() {
            this.element
                .removeClass("ui-sortable ui-sortable-disabled")
                .removeData("sortable")
                .unbind(".sortable")
                .mouse("destroy");
            
            for ( var i = this.items.length - 1; i >= 0; i-- )
                this.items[i].item.removeData("sortable-item");
        },
        createPlaceholder: function(that) {
            (that || this).placeholderElement = this.options.placeholderElement ? $(this.options.placeholderElement, (that || this).currentItem) : (that || this).currentItem;
            (that || this).placeholder = $('<div></div>')
                .addClass(this.options.placeholder)
                .appendTo('body')
                .css({ position: 'absolute' })
                .css((that || this).placeholderElement.offset())
                .css({ width: (that || this).placeholderElement.outerWidth(), height: (that || this).placeholderElement.outerHeight() })
                ;
        },
        contactContainers: function(e) {
            for (var i = this.containers.length - 1; i >= 0; i--){

                if(this.intersectsWith(this.containers[i].containerCache)) {
                    if(!this.containers[i].containerCache.over) {
                        

                        if(this.currentContainer != this.containers[i]) {
                            
                            //When entering a new container, we will find the item with the least distance and append our item near it
                            var dist = 100000; var itemWithLeastDistance = null; var base = this.position.absolute[this.containers[i].floating ? 'left' : 'top'];
                            for (var j = this.items.length - 1; j >= 0; j--) {
                                if(!contains(this.containers[i].element[0], this.items[j].item[0])) continue;
                                var cur = this.items[j][this.containers[i].floating ? 'left' : 'top'];
                                if(Math.abs(cur - base) < dist) {
                                    dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
                                }
                            }
                            
                            //We also need to exchange the placeholder
                            if(this.placeholder) this.placeholder.remove();
                            if(this.containers[i].options.placeholder) {
                                this.containers[i].createPlaceholder(this);
                            } else {
                                this.placeholder = null; this.placeholderElement = null;
                            }
                            
                            
                            itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
                            this.propagate("change", e); //Call plugins and callbacks
                            this.containers[i].propagate("change", e, this); //Call plugins and callbacks
                            this.currentContainer = this.containers[i];

                        }
                        
                        this.containers[i].propagate("over", e, this);
                        this.containers[i].containerCache.over = 1;
                    }
                } else {
                    if(this.containers[i].containerCache.over) {
                        this.containers[i].propagate("out", e, this);
                        this.containers[i].containerCache.over = 0;
                    }
                }
                
            };          
        },
        start: function(e,el) {
        
            var o = this.options;
            this.currentContainer = this;
            this.refresh();

            //Create and append the visible helper
            this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
            if(!this.helper.parents('body').length) this.helper.appendTo(o.appendTo || this.currentItem[0].parentNode); //Add the helper to the DOM if that didn't happen already
            this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortable-helper'); //Position it absolutely and add a helper class
            
            //Prepare variables for position generation
            $.extend(this, {
                offsetParent: this.helper.offsetParent(),
                offsets: {
                    absolute: this.currentItem.offset()
                },
                mouse: {
                    start: { top: e.pageY, left: e.pageX }
                },
                margins: {
                    top: parseInt(this.currentItem.css("marginTop")) || 0,
                    left: parseInt(this.currentItem.css("marginLeft")) || 0
                }
            });
            
            //The relative click offset
            this.offsets.parent = this.offsetParent.offset();
            this.clickOffset = { left: e.pageX - this.offsets.absolute.left, top: e.pageY - this.offsets.absolute.top };
            
            this.originalPosition = {
                left: this.offsets.absolute.left - this.offsets.parent.left - this.margins.left,
                top: this.offsets.absolute.top - this.offsets.parent.top - this.margins.top
            }
            
            //Generate a flexible offset that will later be subtracted from e.pageX/Y
            //I hate margins - they need to be removed before positioning the element absolutely..
            this.offset = {
                left: e.pageX - this.originalPosition.left,
                top: e.pageY - this.originalPosition.top
            };

            //Save the first time position
            $.extend(this, {
                position: {
                    current: { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left },
                    absolute: { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top },
                    dom: this.currentItem.prev()[0]
                }
            });

            //If o.placeholder is used, create a new element at the given position with the class
            if(o.placeholder) this.createPlaceholder();

            this.propagate("start", e); //Call plugins and callbacks
            this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions

            //If we have something in cursorAt, we'll use it
            if(o.cursorAt) {
                if(o.cursorAt.top != undefined || o.cursorAt.bottom != undefined) {
                    this.offset.top -= this.clickOffset.top - (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
                    this.clickOffset.top = (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom));
                }
                if(o.cursorAt.left != undefined || o.cursorAt.right != undefined) {
                    this.offset.left -= this.clickOffset.left - (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
                    this.clickOffset.left = (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right));
                }
            }

            if(this.options.placeholder != 'clone') $(this.currentItem).css('visibility', 'hidden'); //Set the original element visibility to hidden to still fill out the white space
            for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i].propagate("activate", e, this); } //Post 'activate' events to possible containers
            
            //Prepare possible droppables
            if($.ui.ddmanager) $.ui.ddmanager.current = this;
            if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);

            this.dragging = true;
            return false;
            
        },
        stop: function(e) {

            this.propagate("stop", e); //Call plugins and trigger callbacks
            if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
            if(!contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
                this.propagate("remove", e);
                for (var i = this.containers.length - 1; i >= 0; i--){
                    if(contains(this.containers[i].element[0], this.currentItem[0])) {
                        this.containers[i].propagate("update", e, this);
                        this.containers[i].propagate("receive", e, this);
                    }
                };
            };
            
            //Post events to containers
            for (var i = this.containers.length - 1; i >= 0; i--){
                this.containers[i].propagate("deactivate", e, this);
                if(this.containers[i].containerCache.over) {
                    this.containers[i].propagate("out", e, this);
                    this.containers[i].containerCache.over = 0;
                }
            }
            
            //If we are using droppables, inform the manager about the drop
            if ($.ui.ddmanager && !this.options.dropBehaviour) $.ui.ddmanager.drop(this, e);
            
            this.dragging = false;
            if(this.cancelHelperRemoval) return false;
            $(this.currentItem).css('visibility', '');
            if(this.placeholder) this.placeholder.remove();
            this.helper.remove();

            return false;
            
        },
        drag: function(e) {

            //Compute the helpers position
            this.position.current = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left };
            this.position.absolute = { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top };

            //Rearrange
            for (var i = this.items.length - 1; i >= 0; i--) {
                var intersection = this.intersectsWithEdge(this.items[i]);
                if(!intersection) continue;
                
                if(this.items[i].item[0] != this.currentItem[0] //cannot intersect with itself
                    &&  this.currentItem[intersection == 1 ? "next" : "prev"]()[0] != this.items[i].item[0] //no useless actions that have been done before
                    &&  !contains(this.currentItem[0], this.items[i].item[0]) //no action if the item moved is the parent of the item checked
                    && (this.options.type == 'semi-dynamic' ? !contains(this.element[0], this.items[i].item[0]) : true)
                ) {
                    
                    this.direction = intersection == 1 ? "down" : "up";
                    this.rearrange(e, this.items[i]);
                    this.propagate("change", e); //Call plugins and callbacks
                    break;
                }
            }
            
            //Post events to containers
            this.contactContainers(e);
            
            //Interconnect with droppables
            if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);

            this.propagate("sort", e); //Call plugins and callbacks
            this.helper.css({ left: this.position.current.left+'px', top: this.position.current.top+'px' }); // Stick the helper to the cursor
            return false;
            
        },
        rearrange: function(e, i, a) {
            a ? a.append(this.currentItem) : i.item[this.direction == 'down' ? 'before' : 'after'](this.currentItem);
            this.refreshPositions(true); //Precompute after each DOM insertion, NOT on mousemove
            if(this.placeholderElement) this.placeholder.css(this.placeholderElement.offset());
            if(this.placeholderElement && this.placeholderElement.is(":visible")) this.placeholder.css({ width: this.placeholderElement.outerWidth(), height: this.placeholderElement.outerHeight() });
        }
    });
    
    $.extend($.ui.sortable, {
        getter: "serialize toArray",
        defaults: {
            items: '> *',
            zIndex: 1000
        }
    });

    
/*
 * Sortable Extensions
 */

    $.ui.plugin.add("sortable", "cursor", {
        start: function(e, ui) {
            var t = $('body');
            if (t.css("cursor")) ui.options._cursor = t.css("cursor");
            t.css("cursor", ui.options.cursor);
        },
        stop: function(e, ui) {
            if (ui.options._cursor) $('body').css("cursor", ui.options._cursor);
        }
    });

    $.ui.plugin.add("sortable", "zIndex", {
        start: function(e, ui) {
            var t = ui.helper;
            if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex");
            t.css('zIndex', ui.options.zIndex);
        },
        stop: function(e, ui) {
            if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex);
        }
    });

    $.ui.plugin.add("sortable", "opacity", {
        start: function(e, ui) {
            var t = ui.helper;
            if(t.css("opacity")) ui.options._opacity = t.css("opacity");
            t.css('opacity', ui.options.opacity);
        },
        stop: function(e, ui) {
            if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity);
        }
    });


    $.ui.plugin.add("sortable", "revert", {
        stop: function(e, ui) {
            var self = ui.instance;
            self.cancelHelperRemoval = true;
            var cur = self.currentItem.offset();
            var op = self.helper.offsetParent().offset();
            if(ui.instance.options.zIndex) ui.helper.css('zIndex', ui.instance.options.zIndex); //Do the zIndex again because it already was resetted by the plugin above on stop

            //Also animate the placeholder if we have one
            if(ui.instance.placeholder) ui.instance.placeholder.animate({ opacity: 'hide' }, parseInt(ui.options.revert, 10) || 500);
            
            
            ui.helper.animate({
                left: cur.left - op.left - self.margins.left,
                top: cur.top - op.top - self.margins.top
            }, parseInt(ui.options.revert, 10) || 500, function() {
                self.currentItem.css('visibility', 'visible');
                window.setTimeout(function() {
                    if(self.placeholder) self.placeholder.remove();
                    self.helper.remove();
                    if(ui.options._zIndex) ui.helper.css('zIndex', ui.options._zIndex);
                }, 50);
            });
        }
    });

    
    $.ui.plugin.add("sortable", "containment", {
        start: function(e, ui) {

            var o = ui.options;
            if((o.containment.left != undefined || o.containment.constructor == Array) && !o._containment) return;
            if(!o._containment) o._containment = o.containment;

            if(o._containment == 'parent') o._containment = this[0].parentNode;
            if(o._containment == 'sortable') o._containment = this[0];
            if(o._containment == 'document') {
                o.containment = [
                    0,
                    0,
                    $(document).width(),
                    ($(document).height() || document.body.parentNode.scrollHeight)
                ];
            } else { //I'm a node, so compute top/left/right/bottom

                var ce = $(o._containment);
                var co = ce.offset();

                o.containment = [
                    co.left,
                    co.top,
                    co.left+(ce.outerWidth() || ce[0].scrollWidth),
                    co.top+(ce.outerHeight() || ce[0].scrollHeight)
                ];
            }

        },
        sort: function(e, ui) {

            var o = ui.options;
            var h = ui.helper;
            var c = o.containment;
            var self = ui.instance;
            var borderLeft = (parseInt(self.offsetParent.css("borderLeftWidth"), 10) || 0);
            var borderRight = (parseInt(self.offsetParent.css("borderRightWidth"), 10) || 0);
            var borderTop = (parseInt(self.offsetParent.css("borderTopWidth"), 10) || 0);
            var borderBottom = (parseInt(self.offsetParent.css("borderBottomWidth"), 10) || 0);
            
            if(c.constructor == Array) {
                if((self.position.absolute.left < c[0])) self.position.current.left = c[0] - self.offsets.parent.left - self.margins.left;
                if((self.position.absolute.top < c[1])) self.position.current.top = c[1] - self.offsets.parent.top - self.margins.top;
                if(self.position.absolute.left - c[2] + self.helperProportions.width >= 0) self.position.current.left = c[2] - self.offsets.parent.left - self.helperProportions.width - self.margins.left - borderLeft - borderRight;
                if(self.position.absolute.top - c[3] + self.helperProportions.height >= 0) self.position.current.top = c[3] - self.offsets.parent.top - self.helperProportions.height - self.margins.top - borderTop - borderBottom;
            } else {
                if((ui.position.left < c.left)) self.position.current.left = c.left;
                if((ui.position.top < c.top)) self.position.current.top = c.top;
                if(ui.position.left - self.offsetParent.innerWidth() + self.helperProportions.width + c.right + borderLeft + borderRight >= 0) self.position.current.left = self.offsetParent.innerWidth() - self.helperProportions.width - c.right - borderLeft - borderRight;
                if(ui.position.top - self.offsetParent.innerHeight() + self.helperProportions.height + c.bottom + borderTop + borderBottom >= 0) self.position.current.top = self.offsetParent.innerHeight() - self.helperProportions.height - c.bottom - borderTop - borderBottom;
            }

        }
    });

    $.ui.plugin.add("sortable", "axis", {
        sort: function(e, ui) {
            var o = ui.options;
            if(o.constraint) o.axis = o.constraint; //Legacy check
            o.axis == 'x' ? ui.instance.position.current.top = ui.instance.originalPosition.top : ui.instance.position.current.left = ui.instance.originalPosition.left;
        }
    });

    $.ui.plugin.add("sortable", "scroll", {
        start: function(e, ui) {
            var o = ui.options;
            o.scrollSensitivity = o.scrollSensitivity || 20;
            o.scrollSpeed       = o.scrollSpeed || 20;

            ui.instance.overflowY = function(el) {
                do { if((/auto|scroll/).test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-y'))) return el; el = el.parent(); } while (el[0].parentNode);
                return $(document);
            }(this);
            ui.instance.overflowX = function(el) {
                do { if((/auto|scroll/).test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-x'))) return el; el = el.parent(); } while (el[0].parentNode);
                return $(document);
            }(this);
            
            if(ui.instance.overflowY[0] != document && ui.instance.overflowY[0].tagName != 'HTML') ui.instance.overflowYstart = ui.instance.overflowY[0].scrollTop;
            if(ui.instance.overflowX[0] != document && ui.instance.overflowX[0].tagName != 'HTML') ui.instance.overflowXstart = ui.instance.overflowX[0].scrollLeft;
            
        },
        sort: function(e, ui) {
            
            var o = ui.options;
            var i = ui.instance;

            if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') {
                if(i.overflowY[0].offsetHeight - (ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity)
                    i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed;
                if((ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity)
                    i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed;                
            } else {
                //$(document.body).append('<p>'+(e.pageY - $(document).scrollTop())+'</p>');
                if(e.pageY - $(document).scrollTop() < o.scrollSensitivity)
                    $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
                if($(window).height() - (e.pageY - $(document).scrollTop()) < o.scrollSensitivity)
                    $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
            }
            
            if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') {
                if(i.overflowX[0].offsetWidth - (ui.position.left - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity)
                    i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed;
                if((ui.position.top - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity)
                    i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft - o.scrollSpeed;              
            } else {
                if(e.pageX - $(document).scrollLeft() < o.scrollSensitivity)
                    $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
                if($(window).width() - (e.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
                    $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
            }
            
            //ui.instance.recallOffset(e);
            i.offset = {
                left: i.mouse.start.left - i.originalPosition.left + (i.overflowXstart !== undefined ? i.overflowXstart - i.overflowX[0].scrollLeft : 0),
                top: i.mouse.start.top - i.originalPosition.top + (i.overflowYstart !== undefined ? i.overflowYstart - i.overflowX[0].scrollTop : 0)
            };

        }
    });

})(jQuery);