/*
 * jQuery UI 1.5.1
 *
 * 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
 */
;(function($) {

$.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-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);
}

$.widget = function(name, prototype) {
        var namespace = name.split(".")[0];
        name = name.split(".")[1];

        // create plugin method
        $.fn[name] = function(options) {
                var isMethodCall = (typeof options == 'string'),
                        args = Array.prototype.slice.call(arguments, 1);

                if (isMethodCall && getter(namespace, name, options)) {
                        var instance = $.data(this[0], name);
                        return (instance ? instance[options].apply(instance, args)
                                : undefined);
                }

                return this.each(function() {
                        var instance = $.data(this, name);
                        if (isMethodCall && instance && $.isFunction(instance[options])) {
                                instance[options].apply(instance, args);
                        } else if (!isMethodCall) {
                                $.data(this, name, new $[namespace][name](this, options));
                        }
                });
        };

        // create widget constructor
        $[namespace][name] = function(element, options) {
                var self = this;

                this.widgetName = name;
                this.widgetBaseClass = namespace + '-' + name;

                this.options = $.extend({}, $.widget.defaults, $[namespace][name].defaults, options);
                this.element = $(element)
                        .bind('setData.' + name, function(e, key, value) {
                                return self.setData(key, value);
                        })
                        .bind('getData.' + name, function(e, key) {
                                return self.getData(key);
                        })
                        .bind('remove', function() {
                                return self.destroy();
                        });
                this.init();
        };

        // add widget prototype
        $[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
};

$.widget.prototype = {
        init: function() {},
        destroy: function() {
                this.element.removeData(this.widgetName);
        },

        getData: function(key) {
                return this.options[key];
        },
        setData: function(key, value) {
                this.options[key] = value;

                if (key == 'disabled') {
                        this.element[value ? 'addClass' : 'removeClass'](
                                this.widgetBaseClass + '-disabled');
                }
        },

        enable: function() {
                this.setData('disabled', false);
        },
        disable: function() {
                this.setData('disabled', true);
        }
};

$.widget.defaults = {
        disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
        mouseInit: function() {
                var self = this;

                this.element.bind('mousedown.'+this.widgetName, function(e) {
                        return self.mouseDown(e);
                });

                // Prevent text selection in IE
                if ($.browser.msie) {
                        this._mouseUnselectable = this.element.attr('unselectable');
                        this.element.attr('unselectable', 'on');
                }

                this.started = false;
        },

        // TODO: make sure destroying one instance of mouse doesn't mess with
        // other instances of mouse
        mouseDestroy: function() {
                this.element.unbind('.'+this.widgetName);

                // Restore text selection in IE
                ($.browser.msie
                        && this.element.attr('unselectable', this._mouseUnselectable));
        },

        mouseDown: function(e) {
                // we may have missed mouseup (out of window)
                (this._mouseStarted && this.mouseUp(e));

                this._mouseDownEvent = e;

                var self = this,
                        btnIsLeft = (e.which == 1),
                        elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).is(this.options.cancel) : false);
                if (!btnIsLeft || elIsCancel || !this.mouseCapture(e)) {
                        return true;
                }

                this._mouseDelayMet = !this.options.delay;
                if (!this._mouseDelayMet) {
                        this._mouseDelayTimer = setTimeout(function() {
                                self._mouseDelayMet = true;
                        }, this.options.delay);
                }

                if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
                        this._mouseStarted = (this.mouseStart(e) !== false);
                        if (!this._mouseStarted) {
                                e.preventDefault();
                                return true;
                        }
                }

                // these delegates are required to keep context
                this._mouseMoveDelegate = function(e) {
                        return self.mouseMove(e);
                };
                this._mouseUpDelegate = function(e) {
                        return self.mouseUp(e);
                };
                $(document)
                        .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
                        .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);

                return false;
        },

        mouseMove: function(e) {
                // IE mouseup check - mouseup happened when mouse was out of window
                if ($.browser.msie && !e.button) {
                        return this.mouseUp(e);
                }

                if (this._mouseStarted) {
                        this.mouseDrag(e);
                        return false;
                }

                if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
                        this._mouseStarted =
                                (this.mouseStart(this._mouseDownEvent, e) !== false);
                        (this._mouseStarted ? this.mouseDrag(e) : this.mouseUp(e));
                }

                return !this._mouseStarted;
        },

        mouseUp: function(e) {
                $(document)
                        .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
                        .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);

                if (this._mouseStarted) {
                        this._mouseStarted = false;
                        this.mouseStop(e);
                }

                return false;
        },

        mouseDistanceMet: function(e) {
                return (Math.max(
                                Math.abs(this._mouseDownEvent.pageX - e.pageX),
                                Math.abs(this._mouseDownEvent.pageY - e.pageY)
                        ) >= this.options.distance
                );
        },

        mouseDelayMet: function(e) {
                return this._mouseDelayMet;
        },

        // These are placeholder methods, to be overriden by extending plugin
        mouseStart: function(e) {},
        mouseDrag: function(e) {},
        mouseStop: function(e) {},
        mouseCapture: function(e) { return true; }
};

$.ui.mouse.defaults = {
        cancel: null,
        distance: 1,
        delay: 0
};

})(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
 */
(function($) {

$.widget("ui.draggable", $.extend($.ui.mouse, {
        init: function() {

                //Initialize needed constants
                var o = this.options;

                //Position the node
                if (o.helper == 'original' && !(/(relative|absolute|fixed)/).test(this.element.css('position')))
                        this.element.css('position', 'relative');

                this.element.addClass('ui-draggable');
                (o.disabled && this.element.addClass('ui-draggable-disabled'));

                this.mouseInit();

        },
        mouseStart: function(e) {
                var o = this.options;

                if (this.helper || o.disabled || $(e.target).is('.ui-resizable-handle')) return false;

                var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false;


                $(this.options.handle, this.element).find("*").andSelf().each(function() {
                        if(this == e.target) handle = true;
                });
                if (!handle) return false;

                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[0] != this.element[0] && !(/(fixed|absolute)/).test(this.helper.css("position"))) 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
                if(this.offsetParent[0] == document.body && $.browser.mozilla) po = { top: 0, left: 0 };                //Ugly FF3 fix
                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 + this.margins.left;
                        if(o.cursorAt.right != undefined) this.offset.click.left = this.helperProportions.width - o.cursorAt.right + this.margins.left;
                        if(o.cursorAt.top != undefined) this.offset.click.top = o.cursorAt.top + this.margins.top;
                        if(o.cursorAt.bottom != undefined) this.offset.click.top = this.helperProportions.height - o.cursorAt.bottom + this.margins.top;
                }


                /*
                 * - 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' || o.containment == 'window') this.containment = [
                                0 - this.offset.relative.left - this.offset.parent.left,
                                0 - this.offset.relative.top - this.offset.parent.top,
                                $(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
                                ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
                        ];

                        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);

                this.helper.addClass("ui-draggable-dragging");
                this.mouseDrag(e); //Execute the drag once - this causes the helper not to be visible before getting its correct position
                return true;
        },
        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" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop) * mod        // The offsetParent's scroll position, not if the element is fixed
                                + (this.cssPosition == "fixed" ? $(document).scrollTop() : 0) * mod
                                + 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" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft) * mod        // The offsetParent's scroll position, not if the element is fixed
                                + (this.cssPosition == "fixed" ? $(document).scrollLeft() : 0) * mod
                                + 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" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop)        // The offsetParent's scroll position, not if the element is fixed
                                - (this.cssPosition == "fixed" ? $(document).scrollTop() : 0)
                        ),
                        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" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft)        // The offsetParent's scroll position, not if the element is fixed
                                - (this.cssPosition == "fixed" ? $(document).scrollLeft() : 0)
                        )
                };

                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;
        },
        mouseDrag: 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 != "y") this.helper[0].style.left = this.position.left+'px';
                if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
                if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);

                return false;
        },
        mouseStop: 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() {
                this.helper.removeClass("ui-draggable-dragging");
                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: {},
        uiHash: 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.uiHash()]);
                return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [e, this.uiHash()], this.options[n]);
        },
        destroy: function() {
                if(!this.element.data('draggable')) return;
                this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable');
                this.mouseDestroy();
        }
}));

$.extend($.ui.draggable, {
        defaults: {
                appendTo: "parent",
                axis: false,
                cancel: ":input",
                delay: 0,
                distance: 1,
                helper: "original"
        }
});

$.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.sortables = [];
                $(ui.options.connectToSortable).each(function() {
                        if($.data(this, 'sortable')) {
                                var sortable = $.data(this, 'sortable');
                                inst.sortables.push({
                                        instance: sortable,
                                        shouldRevert: sortable.options.revert
                                });
                                sortable.refreshItems();        //Do a one-time refresh at start to refresh the containerCache
                                sortable.propagate("activate", e, inst);
                        }
                });

        },
        stop: function(e,ui) {

                //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
                var inst = $(this).data("draggable");

                $.each(inst.sortables, function() {
                        if(this.instance.isOver) {
                                this.instance.isOver = 0;
                                inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance
                                this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work)
                                if(this.shouldRevert) this.instance.options.revert = true; //revert here
                                this.instance.mouseStop(e);

                                //Also propagate receive event, since the sortable is actually receiving a element
                                this.instance.element.triggerHandler("sortreceive", [e, $.extend(this.instance.ui(), { sender: inst.element })], this.instance.options["receive"]);

                                this.instance.options.helper = this.instance.options._helper;
                        } else {
                                this.instance.propagate("deactivate", e, inst);
                        }

                });

        },
        drag: function(e,ui) {

                var inst = $(this).data("draggable"), self = this;

                var checkPos = function(o) {

                        var l = o.left, r = l + o.width,
                                t = o.top, b = t + o.height;

                        return (l < (this.positionAbs.left + this.offset.click.left) && (this.positionAbs.left + this.offset.click.left) < r
                                        && t < (this.positionAbs.top + this.offset.click.top) && (this.positionAbs.top + this.offset.click.top) < b);
                };

                $.each(inst.sortables, function(i) {

                        if(checkPos.call(inst, this.instance.containerCache)) {

                                //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once
                                if(!this.instance.isOver) {
                                        this.instance.isOver = 1;

                                        //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)
                                        this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true);
                                        this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it
                                        this.instance.options.helper = function() { return ui.helper[0]; };

                                        e.target = this.instance.currentItem[0];
                                        this.instance.mouseCapture(e, true);
                                        this.instance.mouseStart(e, true, true);

                                        //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes
                                        this.instance.offset.click.top = inst.offset.click.top;
                                        this.instance.offset.click.left = inst.offset.click.left;
                                        this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left;
                                        this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top;

                                        inst.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(this.instance.currentItem) this.instance.mouseDrag(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(this.instance.isOver) {
                                        this.instance.isOver = 0;
                                        this.instance.cancelHelperRemoval = true;
                                        this.instance.options.revert = false; //No revert here
                                        this.instance.mouseStop(e, true);
                                        this.instance.options.helper = this.instance.options._helper;

                                        //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size
                                        this.instance.currentItem.remove();
                                        if(this.instance.placeholder) this.instance.placeholder.remove();

                                        inst.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($(a).css("zIndex"),10) || ui.options.stack.min) - (parseInt($(b).css("zIndex"),10) || 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 Droppable
 *
 * Copyright (c) 2008 Paul Bakaus
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Droppables
 *
 * Depends:
 *        ui.core.js
 *        ui.draggable.js
 */
(function($) {

$.widget("ui.droppable", {
        init: function() {

                this.element.addClass("ui-droppable");
                this.isover = 0; this.isout = 1;

                //Prepare the passed options
                var o = this.options, accept = o.accept;
                o = $.extend(o, {
                        accept: o.accept && o.accept.constructor == Function ? o.accept : function(d) {
                                return $(d).is(accept);
                        }
                });

                //Store the droppable's proportions
                this.proportions = { width: this.element.outerWidth(), height: this.element.outerHeight() };

                // Add the reference and positions to the manager
                $.ui.ddmanager.droppables.push(this);

        },
        plugins: {},
        ui: function(c) {
                return {
                        draggable: (c.currentItem || c.element),
                        helper: c.helper,
                        position: c.position,
                        absolutePosition: c.positionAbs,
                        options: this.options,
                        element: this.element
                };
        },
        destroy: function() {
                var drop = $.ui.ddmanager.droppables;
                for ( var i = 0; i < drop.length; i++ )
                        if ( drop[i] == this )
                                drop.splice(i, 1);

                this.element
                        .removeClass("ui-droppable ui-droppable-disabled")
                        .removeData("droppable")
                        .unbind(".droppable");
        },
        over: function(e) {

                var draggable = $.ui.ddmanager.current;
                if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element

                if (this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
                        $.ui.plugin.call(this, 'over', [e, this.ui(draggable)]);
                        this.element.triggerHandler("dropover", [e, this.ui(draggable)], this.options.over);
                }

        },
        out: function(e) {

                var draggable = $.ui.ddmanager.current;
                if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element

                if (this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
                        $.ui.plugin.call(this, 'out', [e, this.ui(draggable)]);
                        this.element.triggerHandler("dropout", [e, this.ui(draggable)], this.options.out);
                }

        },
        drop: function(e,custom) {

                var draggable = custom || $.ui.ddmanager.current;
                if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element

                var childrenIntersection = false;
                this.element.find(".ui-droppable").not(".ui-draggable-dragging").each(function() {
                        var inst = $.data(this, 'droppable');
                        if(inst.options.greedy && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)) {
                                childrenIntersection = true; return false;
                        }
                });
                if(childrenIntersection) return false;

                if(this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
                        $.ui.plugin.call(this, 'drop', [e, this.ui(draggable)]);
                        this.element.triggerHandler("drop", [e, this.ui(draggable)], this.options.drop);
                        return true;
                }

                return false;

        },
        activate: function(e) {

                var draggable = $.ui.ddmanager.current;
                $.ui.plugin.call(this, 'activate', [e, this.ui(draggable)]);
                if(draggable) this.element.triggerHandler("dropactivate", [e, this.ui(draggable)], this.options.activate);

        },
        deactivate: function(e) {

                var draggable = $.ui.ddmanager.current;
                $.ui.plugin.call(this, 'deactivate', [e, this.ui(draggable)]);
                if(draggable) this.element.triggerHandler("dropdeactivate", [e, this.ui(draggable)], this.options.deactivate);

        }
});

$.extend($.ui.droppable, {
        defaults: {
                disabled: false,
                tolerance: 'intersect'
        }
});

$.ui.intersect = function(draggable, droppable, toleranceMode) {

        if (!droppable.offset) return false;

        var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width,
                y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height;
        var l = droppable.offset.left, r = l + droppable.proportions.width,
                t = droppable.offset.top, b = t + droppable.proportions.height;

        switch (toleranceMode) {
                case 'fit':
                        return (l < x1 && x2 < r
                                && t < y1 && y2 < b);
                        break;
                case 'intersect':
                        return (l < x1 + (draggable.helperProportions.width / 2) // Right Half
                                && x2 - (draggable.helperProportions.width / 2) < r // Left Half
                                && t < y1 + (draggable.helperProportions.height / 2) // Bottom Half
                                && y2 - (draggable.helperProportions.height / 2) < b ); // Top Half
                        break;
                case 'pointer':
                        return (l < ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left) && ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left) < r
                                && t < ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top) && ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top) < b);
                        break;
                case 'touch':
                        return (
                                        (y1 >= t && y1 <= b) ||        // Top edge touching
                                        (y2 >= t && y2 <= b) ||        // Bottom edge touching
                                        (y1 < t && y2 > b)                // Surrounded vertically
                                ) && (
                                        (x1 >= l && x1 <= r) ||        // Left edge touching
                                        (x2 >= l && x2 <= r) ||        // Right edge touching
                                        (x1 < l && x2 > r)                // Surrounded horizontally
                                );
                        break;
                default:
                        return false;
                        break;
                }

};

/*
        This manager tracks offsets of draggables and droppables
*/
$.ui.ddmanager = {
        current: null,
        droppables: [],
        prepareOffsets: function(t, e) {

                var m = $.ui.ddmanager.droppables;
                var type = e ? e.type : null; // workaround for #2317
                for (var i = 0; i < m.length; i++) {

                        if(m[i].options.disabled || (t && !m[i].options.accept.call(m[i].element,(t.currentItem || t.element)))) continue;
                        m[i].visible = m[i].element.is(":visible"); if(!m[i].visible) continue; //If the element is not visible, continue
                        m[i].offset = m[i].element.offset();
                        m[i].proportions = { width: m[i].element.outerWidth(), height: m[i].element.outerHeight() };

                        if(type == "dragstart" || type == "sortactivate") m[i].activate.call(m[i], e); //Activate the droppable if used directly from draggables
                }

        },
        drop: function(draggable, e) {

                var dropped = false;
                $.each($.ui.ddmanager.droppables, function() {

                        if(!this.options) return;
                        if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance))
                                dropped = this.drop.call(this, e);

                        if (!this.options.disabled && this.visible && this.options.accept.call(this.element,(draggable.currentItem || draggable.element))) {
                                this.isout = 1; this.isover = 0;
                                this.deactivate.call(this, e);
                        }

                });
                return dropped;

        },
        drag: function(draggable, e) {

                //If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse.
                if(draggable.options.refreshPositions) $.ui.ddmanager.prepareOffsets(draggable, e);

                //Run through all droppables and check their positions based on specific tolerance options
                $.each($.ui.ddmanager.droppables, function() {

                        if(this.options.disabled || this.greedyChild || !this.visible) return;
                        var intersects = $.ui.intersect(draggable, this, this.options.tolerance);

                        var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null);
                        if(!c) return;

                        var parentInstance;
                        if (this.options.greedy) {
                                var parent = this.element.parents('.ui-droppable:eq(0)');
                                if (parent.length) {
                                        parentInstance = $.data(parent[0], 'droppable');
                                        parentInstance.greedyChild = (c == 'isover' ? 1 : 0);
                                }
                        }

                        // we just moved into a greedy child
                        if (parentInstance && c == 'isover') {
                                parentInstance['isover'] = 0;
                                parentInstance['isout'] = 1;
                                parentInstance.out.call(parentInstance, e);
                        }

                        this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0;
                        this[c == "isover" ? "over" : "out"].call(this, e);

                        // we just moved out of a greedy child
                        if (parentInstance && c == 'isout') {
                                parentInstance['isout'] = 0;
                                parentInstance['isover'] = 1;
                                parentInstance.over.call(parentInstance, e);
                        }
                });

        }
};

/*
 * Droppable Extensions
 */

$.ui.plugin.add("droppable", "activeClass", {
        activate: function(e, ui) {
                $(this).addClass(ui.options.activeClass);
        },
        deactivate: function(e, ui) {
                $(this).removeClass(ui.options.activeClass);
        },
        drop: function(e, ui) {
                $(this).removeClass(ui.options.activeClass);
        }
});

$.ui.plugin.add("droppable", "hoverClass", {
        over: function(e, ui) {
                $(this).addClass(ui.options.hoverClass);
        },
        out: function(e, ui) {
                $(this).removeClass(ui.options.hoverClass);
        },
        drop: function(e, ui) {
                $(this).removeClass(ui.options.hoverClass);
        }
});

})(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
 */
(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", $.extend($.ui.mouse, {
        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.mouseInit();

        },
        plugins: {},
        ui: function(inst) {
                return {
                        helper: (inst || this)["helper"],
                        placeholder: (inst || this)["placeholder"] || $([]),
                        position: (inst || this)["position"],
                        absolutePosition: (inst || this)["positionAbs"],
                        options: this.options,
                        element: this.element,
                        item: (inst || this)["currentItem"],
                        sender: inst ? inst.element : null
                };
        },
        propagate: function(n,e,inst, noPropagation) {
                $.ui.plugin.call(this, n, [e, this.ui(inst)]);
                if(!noPropagation) this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
        },
        serialize: function(o) {

                var items = ($.isFunction(this.options.items) ? this.options.items.call(this.element) : $(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 && o.expression ? res[1] : res[2]));
                });

                return str.join('&');

        },
        toArray: function(attr) {

                var items = ($.isFunction(this.options.items) ? this.options.items.call(this.element) : $(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;

        },
        /* Be careful with the following core functions */
        intersectsWith: function(item) {

                var x1 = this.positionAbs.left, x2 = x1 + this.helperProportions.width,
                y1 = this.positionAbs.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" || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {
                        return (y1 + this.offset.click.top > t && y1 + this.offset.click.top < b && x1 + this.offset.click.left > l && x1 + this.offset.click.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.positionAbs.left, x2 = x1 + this.helperProportions.width,
                        y1 = this.positionAbs.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" || (this.options.tolerance == "guess" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])) {

                        if(!(y1 + this.offset.click.top > t && y1 + this.offset.click.top < b && x1 + this.offset.click.left > l && x1 + this.offset.click.left < r)) return false;

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

        },
        refresh: function() {
                this.refreshItems();
                this.refreshPositions();
        },
        refreshItems: function() {

                this.items = [];
                this.containers = [this];
                var items = this.items;
                var self = this;
                var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element), this]];

                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 = $.data(cur[j], 'sortable');
                                        if(inst && !inst.options.disabled) {
                                                queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element), inst]);
                                                this.containers.push(inst);
                                        }
                                };
                        };
                }

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

        },
        refreshPositions: function(fast) {

                //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
                if(this.offsetParent) {
                        var po = this.offsetParent.offset();
                        this.offset.parent = { top: po.top + this.offsetParentBorders.top, left: po.left + this.offsetParentBorders.left };
                }

                for (var i = this.items.length - 1; i >= 0; i--){

                        //We ignore calculating positions of all connected containers when we're not over them
                        if(this.items[i].instance != this.currentContainer && this.currentContainer && this.items[i].item[0] != this.currentItem[0])
                                continue;

                        var t = this.options.toleranceElement ? $(this.options.toleranceElement, this.items[i].item) : this.items[i].item;

                        if(!fast) {
                                this.items[i].width = t.outerWidth();
                                this.items[i].height = t.outerHeight();
                        }

                        var p = 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");
                this.mouseDestroy();

                for ( var i = this.items.length - 1; i >= 0; i-- )
                        this.items[i].item.removeData("sortable-item");
        },
        createPlaceholder: function(that) {

                var self = that || this, o = self.options;

                if(o.placeholder.constructor == String) {
                        var className = o.placeholder;
                        o.placeholder = {
                                element: function() {
                                        return $('<div></div>').addClass(className)[0];
                                },
                                update: function(i, p) {
                                        p.css(i.offset()).css({ width: i.outerWidth(), height: i.outerHeight() });
                                }
                        };
                }

                self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem)).appendTo('body').css({ position: 'absolute' });
                o.placeholder.update.call(self.element, self.currentItem, self.placeholder);
        },
        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 = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[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];
                                                        }
                                                }

                                                if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
                                                        continue;

                                                //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.currentContainer = this.containers[i];
                                                itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance, null, true) : this.rearrange(e, null, this.containers[i].element, true);
                                                this.propagate("change", e); //Call plugins and callbacks
                                                this.containers[i].propagate("change", e, this); //Call plugins and callbacks

                                        }

                                        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;
                                }
                        }

                };
        },
        mouseCapture: function(e, overrideHandle) {

                if(this.options.disabled || this.options.type == 'static') return false;

                //We have to refresh the items data once first
                this.refreshItems();

                //Find out if the clicked node (or one of its parents) is a actual item in this.items
                var currentItem = null, self = this, nodes = $(e.target).parents().each(function() {
                        if($.data(this, 'sortable-item') == self) {
                                currentItem = $(this);
                                return false;
                        }
                });
                if($.data(e.target, 'sortable-item') == self) currentItem = $(e.target);

                if(!currentItem) return false;
                if(this.options.handle && !overrideHandle) {
                        var validHandle = false;

                        $(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == e.target) validHandle = true; });
                        if(!validHandle) return false;
                }

                this.currentItem = currentItem;
                return true;

        },
        mouseStart: function(e, overrideHandle, noActivation) {

                var o = this.options;
                this.currentContainer = this;

                //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
                this.refreshPositions();

                //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 != 'parent' ? 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

                /*
                 * - Position generation -
                 * This block generates everything position related - it's the core of draggables.
                 */

                this.margins = {                                                                                                                                                                //Cache the margins
                        left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
                        top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
                };

                this.offset = this.currentItem.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();                                                                                                        //Get the offsetParent and cache its position
                var po = this.offsetParent.offset();

                this.offsetParentBorders = {
                        top: (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
                        left: (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
                };
                this.offset.parent = {                                                                                                                                                        //Store its position plus border
                        top: po.top + this.offsetParentBorders.top,
                        left: po.left + this.offsetParentBorders.left
                };

                this.originalPosition = this.generatePosition(e);                                                                                                //Generate the original position
                this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };  //Cache the former DOM position

                //If o.placeholder is used, create a new element at the given position with the class
                this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Cache the helper size
                if(o.placeholder) this.createPlaceholder();

                //Call plugins and callbacks
                this.propagate("start", e);
                this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Recache 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' || o.containment == 'window') this.containment = [
                                0 - this.offset.parent.left,
                                0 - this.offset.parent.top,
                                $(o.containment == 'document' ? document : window).width() - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0),
                                ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0)
                        ];

                        if(!(/^(document|window|parent)$/).test(o.containment)) {
                                var ce = $(o.containment)[0];
                                var co = $(o.containment).offset();

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

                //Set the original element visibility to hidden to still fill out the white space
                if(this.options.placeholder != 'clone')
                        this.currentItem.css('visibility', 'hidden');

                //Post 'activate' events to possible containers
                if(!noActivation) {
                         for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i].propagate("activate", e, this); }
                }

                //Prepare possible droppables
                if($.ui.ddmanager) $.ui.ddmanager.current = this;
                if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);

                this.dragging = true;

                this.mouseDrag(e); //Execute the drag once - this causes the helper not to be visible before getting its correct position
                return true;


        },
        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.parent.top * mod                                                                                        // The offsetParent's offset without borders (offset + border)
                                - (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop) * mod        // The offsetParent's scroll position
                                + 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.parent.left * mod                                                                                        // The offsetParent's offset without borders (offset + border)
                                - (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft) * mod        // The offsetParent's scroll position
                                + 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.parent.top                                                                                                // The offsetParent's offset without borders (offset + border)
                                + (this.offsetParent[0] == document.body ? 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.parent.left                                                                                                // The offsetParent's offset without borders (offset + border)
                                + (this.offsetParent[0] == document.body ? 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;
        },
        mouseDrag: function(e) {


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

                //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);

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

                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';

                //Interconnect with droppables
                if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);

                return false;

        },
        rearrange: function(e, i, a, hardRefresh) {
                a ? a.append(this.currentItem) : i.item[this.direction == 'down' ? 'before' : 'after'](this.currentItem);

                //Various things done here to improve the performance:
                // 1. we create a setTimeout, that calls refreshPositions
                // 2. on the instance, we have a counter variable, that get's higher after every append
                // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
                // 4. this lets only the last addition to the timeout stack through
                this.counter = this.counter ? ++this.counter : 1;
                var self = this, counter = this.counter;

                window.setTimeout(function() {
                        if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
                },0);

                if(this.options.placeholder)
                        this.options.placeholder.update.call(this.element, this.currentItem, this.placeholder);
        },
        mouseStop: function(e, noPropagation) {

                //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;
                        var cur = self.currentItem.offset();

                        //Also animate the placeholder if we have one
                        if(self.placeholder) self.placeholder.animate({ opacity: 'hide' }, (parseInt(this.options.revert, 10) || 500)-50);

                        $(this.helper).animate({
                                left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
                                top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
                        }, parseInt(this.options.revert, 10) || 500, function() {
                                self.clear(e);
                        });
                } else {
                        this.clear(e, noPropagation);
                }

                return false;

        },
        clear: function(e, noPropagation) {

                if(this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) this.propagate("update", e, null, noPropagation); //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, null, noPropagation);
                        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, noPropagation);
                                        this.containers[i].propagate("receive", e, this, noPropagation);
                                }
                        };
                };

                //Post events to containers
                for (var i = this.containers.length - 1; i >= 0; i--){
                        this.containers[i].propagate("deactivate", e, this, noPropagation);
                        if(this.containers[i].containerCache.over) {
                                this.containers[i].propagate("out", e, this);
                                this.containers[i].containerCache.over = 0;
                        }
                }

                this.dragging = false;
                if(this.cancelHelperRemoval) {
                        this.propagate("stop", e, null, noPropagation);
                        return false;
                }

                $(this.currentItem).css('visibility', '');
                if(this.placeholder) this.placeholder.remove();
                this.helper.remove(); this.helper = null;
                this.propagate("stop", e, null, noPropagation);

                return true;

        }
}));

$.extend($.ui.sortable, {
        getter: "serialize toArray",
        defaults: {
                helper: "clone",
                tolerance: "guess",
                distance: 1,
                delay: 0,
                scroll: true,
                scrollSensitivity: 20,
                scrollSpeed: 20,
                cancel: ":input",
                items: '> *',
                zIndex: 1000,
                dropOnEmpty: true,
                appendTo: "parent"
        }
});

/*
 * 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", "scroll", {
        start: function(e, ui) {
                var o = ui.options;
                var i = $(this).data("sortable");

                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);
                }(i.currentItem);
                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);
                }(i.currentItem);

                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();

        },
        sort: function(e, ui) {

                var o = ui.options;
                var i = $(this).data("sortable");

                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);
                }

        }
});

})(jQuery);