/*! jQuery UI - v1.10.4 - 2014-05-07
 * http://jqueryui.com
 * Includes: jquery.ui.core.js, jquery.ui.widget.js, jquery.ui.mouse.js, jquery.ui.draggable.js, jquery.ui.droppable.js, jquery.ui.sortable.js
 * Copyright 2014 jQuery Foundation and other contributors; Licensed MIT */

(function( $, undefined ) {

    var uuid = 0,
        runiqueId = /^ui-id-\d+$/;

// $.ui might exist from components with no dependencies, e.g., $.ui.position
    $.ui = $.ui || {};

    $.extend( $.ui, {
        version: "1.10.4",

        keyCode: {
            BACKSPACE: 8,
            COMMA: 188,
            DELETE: 46,
            DOWN: 40,
            END: 35,
            ENTER: 13,
            ESCAPE: 27,
            HOME: 36,
            LEFT: 37,
            NUMPAD_ADD: 107,
            NUMPAD_DECIMAL: 110,
            NUMPAD_DIVIDE: 111,
            NUMPAD_ENTER: 108,
            NUMPAD_MULTIPLY: 106,
            NUMPAD_SUBTRACT: 109,
            PAGE_DOWN: 34,
            PAGE_UP: 33,
            PERIOD: 190,
            RIGHT: 39,
            SPACE: 32,
            TAB: 9,
            UP: 38
        }
    });

// plugins
    $.fn.extend({
        focus: (function( orig ) {
            return function( delay, fn ) {
                return typeof delay === "number" ?
                    this.each(function() {
                        var elem = this;
                        setTimeout(function() {
                            $( elem ).focus();
                            if ( fn ) {
                                fn.call( elem );
                            }
                        }, delay );
                    }) :
                    orig.apply( this, arguments );
            };
        })( $.fn.focus ),

        scrollParent: function() {
            var scrollParent;
            if (($.ui.ie && (/(static|relative)/).test(this.css("position"))) || (/absolute/).test(this.css("position"))) {
                scrollParent = this.parents().filter(function() {
                    return (/(relative|absolute|fixed)/).test($.css(this,"position")) && (/(auto|scroll)/).test($.css(this,"overflow")+$.css(this,"overflow-y")+$.css(this,"overflow-x"));
                }).eq(0);
            } else {
                scrollParent = this.parents().filter(function() {
                    return (/(auto|scroll)/).test($.css(this,"overflow")+$.css(this,"overflow-y")+$.css(this,"overflow-x"));
                }).eq(0);
            }

            return (/fixed/).test(this.css("position")) || !scrollParent.length ? $(document) : scrollParent;
        },

        zIndex: function( zIndex ) {
            if ( zIndex !== undefined ) {
                return this.css( "zIndex", zIndex );
            }

            if ( this.length ) {
                var elem = $( this[ 0 ] ), position, value;
                while ( elem.length && elem[ 0 ] !== document ) {
                    // Ignore z-index if position is set to a value where z-index is ignored by the browser
                    // This makes behavior of this function consistent across browsers
                    // WebKit always returns auto if the element is positioned
                    position = elem.css( "position" );
                    if ( position === "absolute" || position === "relative" || position === "fixed" ) {
                        // IE returns 0 when zIndex is not specified
                        // other browsers return a string
                        // we ignore the case of nested elements with an explicit value of 0
                        // <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
                        value = parseInt( elem.css( "zIndex" ), 10 );
                        if ( !isNaN( value ) && value !== 0 ) {
                            return value;
                        }
                    }
                    elem = elem.parent();
                }
            }

            return 0;
        },

        uniqueId: function() {
            return this.each(function() {
                if ( !this.id ) {
                    this.id = "ui-id-" + (++uuid);
                }
            });
        },

        removeUniqueId: function() {
            return this.each(function() {
                if ( runiqueId.test( this.id ) ) {
                    $( this ).removeAttr( "id" );
                }
            });
        }
    });

// selectors
    function focusable( element, isTabIndexNotNaN ) {
        var map, mapName, img,
            nodeName = element.nodeName.toLowerCase();
        if ( "area" === nodeName ) {
            map = element.parentNode;
            mapName = map.name;
            if ( !element.href || !mapName || map.nodeName.toLowerCase() !== "map" ) {
                return false;
            }
            img = $( "img[usemap=#" + mapName + "]" )[0];
            return !!img && visible( img );
        }
        return ( /input|select|textarea|button|object/.test( nodeName ) ?
            !element.disabled :
                "a" === nodeName ?
            element.href || isTabIndexNotNaN :
            isTabIndexNotNaN) &&
            // the element and all of its ancestors must be visible
            visible( element );
    }

    function visible( element ) {
        return $.expr.filters.visible( element ) &&
            !$( element ).parents().addBack().filter(function() {
                return $.css( this, "visibility" ) === "hidden";
            }).length;
    }

    $.extend( $.expr[ ":" ], {
        data: $.expr.createPseudo ?
            $.expr.createPseudo(function( dataName ) {
                return function( elem ) {
                    return !!$.data( elem, dataName );
                };
            }) :
            // support: jQuery <1.8
            function( elem, i, match ) {
                return !!$.data( elem, match[ 3 ] );
            },

        focusable: function( element ) {
            return focusable( element, !isNaN( $.attr( element, "tabindex" ) ) );
        },

        tabbable: function( element ) {
            var tabIndex = $.attr( element, "tabindex" ),
                isTabIndexNaN = isNaN( tabIndex );
            return ( isTabIndexNaN || tabIndex >= 0 ) && focusable( element, !isTabIndexNaN );
        }
    });

// support: jQuery <1.8
    if ( !$( "<a>" ).outerWidth( 1 ).jquery ) {
        $.each( [ "Width", "Height" ], function( i, name ) {
            var side = name === "Width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ],
                type = name.toLowerCase(),
                orig = {
                    innerWidth: $.fn.innerWidth,
                    innerHeight: $.fn.innerHeight,
                    outerWidth: $.fn.outerWidth,
                    outerHeight: $.fn.outerHeight
                };

            function reduce( elem, size, border, margin ) {
                $.each( side, function() {
                    size -= parseFloat( $.css( elem, "padding" + this ) ) || 0;
                    if ( border ) {
                        size -= parseFloat( $.css( elem, "border" + this + "Width" ) ) || 0;
                    }
                    if ( margin ) {
                        size -= parseFloat( $.css( elem, "margin" + this ) ) || 0;
                    }
                });
                return size;
            }

            $.fn[ "inner" + name ] = function( size ) {
                if ( size === undefined ) {
                    return orig[ "inner" + name ].call( this );
                }

                return this.each(function() {
                    $( this ).css( type, reduce( this, size ) + "px" );
                });
            };

            $.fn[ "outer" + name] = function( size, margin ) {
                if ( typeof size !== "number" ) {
                    return orig[ "outer" + name ].call( this, size );
                }

                return this.each(function() {
                    $( this).css( type, reduce( this, size, true, margin ) + "px" );
                });
            };
        });
    }

// support: jQuery <1.8
    if ( !$.fn.addBack ) {
        $.fn.addBack = function( selector ) {
            return this.add( selector == null ?
                    this.prevObject : this.prevObject.filter( selector )
            );
        };
    }

// support: jQuery 1.6.1, 1.6.2 (http://bugs.jquery.com/ticket/9413)
    if ( $( "<a>" ).data( "a-b", "a" ).removeData( "a-b" ).data( "a-b" ) ) {
        $.fn.removeData = (function( removeData ) {
            return function( key ) {
                if ( arguments.length ) {
                    return removeData.call( this, $.camelCase( key ) );
                } else {
                    return removeData.call( this );
                }
            };
        })( $.fn.removeData );
    }





// deprecated
    $.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );

    $.support.selectstart = "onselectstart" in document.createElement( "div" );
    $.fn.extend({
        disableSelection: function() {
            return this.bind( ( $.support.selectstart ? "selectstart" : "mousedown" ) +
                ".ui-disableSelection", function( event ) {
                event.preventDefault();
            });
        },

        enableSelection: function() {
            return this.unbind( ".ui-disableSelection" );
        }
    });

    $.extend( $.ui, {
        // $.ui.plugin is deprecated. Use $.widget() extensions instead.
        plugin: {
            add: function( module, option, set ) {
                var i,
                    proto = $.ui[ module ].prototype;
                for ( i in set ) {
                    proto.plugins[ i ] = proto.plugins[ i ] || [];
                    proto.plugins[ i ].push( [ option, set[ i ] ] );
                }
            },
            call: function( instance, name, args ) {
                var i,
                    set = instance.plugins[ name ];
                if ( !set || !instance.element[ 0 ].parentNode || instance.element[ 0 ].parentNode.nodeType === 11 ) {
                    return;
                }

                for ( i = 0; i < set.length; i++ ) {
                    if ( instance.options[ set[ i ][ 0 ] ] ) {
                        set[ i ][ 1 ].apply( instance.element, args );
                    }
                }
            }
        },

        // only used by resizable
        hasScroll: function( el, a ) {

            //If overflow is hidden, the element might have extra content, but the user wants to hide it
            if ( $( el ).css( "overflow" ) === "hidden") {
                return false;
            }

            var scroll = ( a && a === "left" ) ? "scrollLeft" : "scrollTop",
                has = false;

            if ( el[ scroll ] > 0 ) {
                return true;
            }

            // TODO: determine which cases actually cause this to happen
            // if the element doesn't have the scroll set, see if it's possible to
            // set the scroll
            el[ scroll ] = 1;
            has = ( el[ scroll ] > 0 );
            el[ scroll ] = 0;
            return has;
        }
    });

})( jQuery );
(function( $, undefined ) {

    var uuid = 0,
        slice = Array.prototype.slice,
        _cleanData = $.cleanData;
    $.cleanData = function( elems ) {
        for ( var i = 0, elem; (elem = elems[i]) != null; i++ ) {
            try {
                $( elem ).triggerHandler( "remove" );
                // http://bugs.jquery.com/ticket/8235
            } catch( e ) {}
        }
        _cleanData( elems );
    };

    $.widget = function( name, base, prototype ) {
        var fullName, existingConstructor, constructor, basePrototype,
        // proxiedPrototype allows the provided prototype to remain unmodified
        // so that it can be used as a mixin for multiple widgets (#8876)
            proxiedPrototype = {},
            namespace = name.split( "." )[ 0 ];

        name = name.split( "." )[ 1 ];
        fullName = namespace + "-" + name;

        if ( !prototype ) {
            prototype = base;
            base = $.Widget;
        }

        // create selector for plugin
        $.expr[ ":" ][ fullName.toLowerCase() ] = function( elem ) {
            return !!$.data( elem, fullName );
        };

        $[ namespace ] = $[ namespace ] || {};
        existingConstructor = $[ namespace ][ name ];
        constructor = $[ namespace ][ name ] = function( options, element ) {
            // allow instantiation without "new" keyword
            if ( !this._createWidget ) {
                return new constructor( options, element );
            }

            // allow instantiation without initializing for simple inheritance
            // must use "new" keyword (the code above always passes args)
            if ( arguments.length ) {
                this._createWidget( options, element );
            }
        };
        // extend with the existing constructor to carry over any static properties
        $.extend( constructor, existingConstructor, {
            version: prototype.version,
            // copy the object used to create the prototype in case we need to
            // redefine the widget later
            _proto: $.extend( {}, prototype ),
            // track widgets that inherit from this widget in case this widget is
            // redefined after a widget inherits from it
            _childConstructors: []
        });

        basePrototype = new base();
        // we need to make the options hash a property directly on the new instance
        // otherwise we'll modify the options hash on the prototype that we're
        // inheriting from
        basePrototype.options = $.widget.extend( {}, basePrototype.options );
        $.each( prototype, function( prop, value ) {
            if ( !$.isFunction( value ) ) {
                proxiedPrototype[ prop ] = value;
                return;
            }
            proxiedPrototype[ prop ] = (function() {
                var _super = function() {
                        return base.prototype[ prop ].apply( this, arguments );
                    },
                    _superApply = function( args ) {
                        return base.prototype[ prop ].apply( this, args );
                    };
                return function() {
                    var __super = this._super,
                        __superApply = this._superApply,
                        returnValue;

                    this._super = _super;
                    this._superApply = _superApply;

                    returnValue = value.apply( this, arguments );

                    this._super = __super;
                    this._superApply = __superApply;

                    return returnValue;
                };
            })();
        });
        constructor.prototype = $.widget.extend( basePrototype, {
            // TODO: remove support for widgetEventPrefix
            // always use the name + a colon as the prefix, e.g., draggable:start
            // don't prefix for widgets that aren't DOM-based
            widgetEventPrefix: existingConstructor ? (basePrototype.widgetEventPrefix || name) : name
        }, proxiedPrototype, {
            constructor: constructor,
            namespace: namespace,
            widgetName: name,
            widgetFullName: fullName
        });

        // If this widget is being redefined then we need to find all widgets that
        // are inheriting from it and redefine all of them so that they inherit from
        // the new version of this widget. We're essentially trying to replace one
        // level in the prototype chain.
        if ( existingConstructor ) {
            $.each( existingConstructor._childConstructors, function( i, child ) {
                var childPrototype = child.prototype;

                // redefine the child widget using the same prototype that was
                // originally used, but inherit from the new version of the base
                $.widget( childPrototype.namespace + "." + childPrototype.widgetName, constructor, child._proto );
            });
            // remove the list of existing child constructors from the old constructor
            // so the old child constructors can be garbage collected
            delete existingConstructor._childConstructors;
        } else {
            base._childConstructors.push( constructor );
        }

        $.widget.bridge( name, constructor );
    };

    $.widget.extend = function( target ) {
        var input = slice.call( arguments, 1 ),
            inputIndex = 0,
            inputLength = input.length,
            key,
            value;
        for ( ; inputIndex < inputLength; inputIndex++ ) {
            for ( key in input[ inputIndex ] ) {
                value = input[ inputIndex ][ key ];
                if ( input[ inputIndex ].hasOwnProperty( key ) && value !== undefined ) {
                    // Clone objects
                    if ( $.isPlainObject( value ) ) {
                        target[ key ] = $.isPlainObject( target[ key ] ) ?
                            $.widget.extend( {}, target[ key ], value ) :
                            // Don't extend strings, arrays, etc. with objects
                            $.widget.extend( {}, value );
                        // Copy everything else by reference
                    } else {
                        target[ key ] = value;
                    }
                }
            }
        }
        return target;
    };

    $.widget.bridge = function( name, object ) {
        var fullName = object.prototype.widgetFullName || name;
        $.fn[ name ] = function( options ) {
            var isMethodCall = typeof options === "string",
                args = slice.call( arguments, 1 ),
                returnValue = this;

            // allow multiple hashes to be passed on init
            options = !isMethodCall && args.length ?
                $.widget.extend.apply( null, [ options ].concat(args) ) :
                options;

            if ( isMethodCall ) {
                this.each(function() {
                    var methodValue,
                        instance = $.data( this, fullName );
                    if ( !instance ) {
                        return $.error( "cannot call methods on " + name + " prior to initialization; " +
                            "attempted to call method '" + options + "'" );
                    }
                    if ( !$.isFunction( instance[options] ) || options.charAt( 0 ) === "_" ) {
                        return $.error( "no such method '" + options + "' for " + name + " widget instance" );
                    }
                    methodValue = instance[ options ].apply( instance, args );
                    if ( methodValue !== instance && methodValue !== undefined ) {
                        returnValue = methodValue && methodValue.jquery ?
                            returnValue.pushStack( methodValue.get() ) :
                            methodValue;
                        return false;
                    }
                });
            } else {
                this.each(function() {
                    var instance = $.data( this, fullName );
                    if ( instance ) {
                        instance.option( options || {} )._init();
                    } else {
                        $.data( this, fullName, new object( options, this ) );
                    }
                });
            }

            return returnValue;
        };
    };

    $.Widget = function( /* options, element */ ) {};
    $.Widget._childConstructors = [];

    $.Widget.prototype = {
        widgetName: "widget",
        widgetEventPrefix: "",
        defaultElement: "<div>",
        options: {
            disabled: false,

            // callbacks
            create: null
        },
        _createWidget: function( options, element ) {
            element = $( element || this.defaultElement || this )[ 0 ];
            this.element = $( element );
            this.uuid = uuid++;
            this.eventNamespace = "." + this.widgetName + this.uuid;
            this.options = $.widget.extend( {},
                this.options,
                this._getCreateOptions(),
                options );

            this.bindings = $();
            this.hoverable = $();
            this.focusable = $();

            if ( element !== this ) {
                $.data( element, this.widgetFullName, this );
                this._on( true, this.element, {
                    remove: function( event ) {
                        if ( event.target === element ) {
                            this.destroy();
                        }
                    }
                });
                this.document = $( element.style ?
                    // element within the document
                    element.ownerDocument :
                    // element is window or document
                    element.document || element );
                this.window = $( this.document[0].defaultView || this.document[0].parentWindow );
            }

            this._create();
            this._trigger( "create", null, this._getCreateEventData() );
            this._init();
        },
        _getCreateOptions: $.noop,
        _getCreateEventData: $.noop,
        _create: $.noop,
        _init: $.noop,

        destroy: function() {
            this._destroy();
            // we can probably remove the unbind calls in 2.0
            // all event bindings should go through this._on()
            this.element
                .unbind( this.eventNamespace )
                // 1.9 BC for #7810
                // TODO remove dual storage
                .removeData( this.widgetName )
                .removeData( this.widgetFullName )
                // support: jquery <1.6.3
                // http://bugs.jquery.com/ticket/9413
                .removeData( $.camelCase( this.widgetFullName ) );
            this.widget()
                .unbind( this.eventNamespace )
                .removeAttr( "aria-disabled" )
                .removeClass(
                    this.widgetFullName + "-disabled " +
                    "ui-state-disabled" );

            // clean up events and states
            this.bindings.unbind( this.eventNamespace );
            this.hoverable.removeClass( "ui-state-hover" );
            this.focusable.removeClass( "ui-state-focus" );
        },
        _destroy: $.noop,

        widget: function() {
            return this.element;
        },

        option: function( key, value ) {
            var options = key,
                parts,
                curOption,
                i;

            if ( arguments.length === 0 ) {
                // don't return a reference to the internal hash
                return $.widget.extend( {}, this.options );
            }

            if ( typeof key === "string" ) {
                // handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } }
                options = {};
                parts = key.split( "." );
                key = parts.shift();
                if ( parts.length ) {
                    curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] );
                    for ( i = 0; i < parts.length - 1; i++ ) {
                        curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {};
                        curOption = curOption[ parts[ i ] ];
                    }
                    key = parts.pop();
                    if ( arguments.length === 1 ) {
                        return curOption[ key ] === undefined ? null : curOption[ key ];
                    }
                    curOption[ key ] = value;
                } else {
                    if ( arguments.length === 1 ) {
                        return this.options[ key ] === undefined ? null : this.options[ key ];
                    }
                    options[ key ] = value;
                }
            }

            this._setOptions( options );

            return this;
        },
        _setOptions: function( options ) {
            var key;

            for ( key in options ) {
                this._setOption( key, options[ key ] );
            }

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

            if ( key === "disabled" ) {
                this.widget()
                    .toggleClass( this.widgetFullName + "-disabled ui-state-disabled", !!value )
                    .attr( "aria-disabled", value );
                this.hoverable.removeClass( "ui-state-hover" );
                this.focusable.removeClass( "ui-state-focus" );
            }

            return this;
        },

        enable: function() {
            return this._setOption( "disabled", false );
        },
        disable: function() {
            return this._setOption( "disabled", true );
        },

        _on: function( suppressDisabledCheck, element, handlers ) {
            var delegateElement,
                instance = this;

            // no suppressDisabledCheck flag, shuffle arguments
            if ( typeof suppressDisabledCheck !== "boolean" ) {
                handlers = element;
                element = suppressDisabledCheck;
                suppressDisabledCheck = false;
            }

            // no element argument, shuffle and use this.element
            if ( !handlers ) {
                handlers = element;
                element = this.element;
                delegateElement = this.widget();
            } else {
                // accept selectors, DOM elements
                element = delegateElement = $( element );
                this.bindings = this.bindings.add( element );
            }

            $.each( handlers, function( event, handler ) {
                function handlerProxy() {
                    // allow widgets to customize the disabled handling
                    // - disabled as an array instead of boolean
                    // - disabled class as method for disabling individual parts
                    if ( !suppressDisabledCheck &&
                        ( instance.options.disabled === true ||
                            $( this ).hasClass( "ui-state-disabled" ) ) ) {
                        return;
                    }
                    return ( typeof handler === "string" ? instance[ handler ] : handler )
                        .apply( instance, arguments );
                }

                // copy the guid so direct unbinding works
                if ( typeof handler !== "string" ) {
                    handlerProxy.guid = handler.guid =
                        handler.guid || handlerProxy.guid || $.guid++;
                }

                var match = event.match( /^(\w+)\s*(.*)$/ ),
                    eventName = match[1] + instance.eventNamespace,
                    selector = match[2];
                if ( selector ) {
                    delegateElement.delegate( selector, eventName, handlerProxy );
                } else {
                    element.bind( eventName, handlerProxy );
                }
            });
        },

        _off: function( element, eventName ) {
            eventName = (eventName || "").split( " " ).join( this.eventNamespace + " " ) + this.eventNamespace;
            element.unbind( eventName ).undelegate( eventName );
        },

        _delay: function( handler, delay ) {
            function handlerProxy() {
                return ( typeof handler === "string" ? instance[ handler ] : handler )
                    .apply( instance, arguments );
            }
            var instance = this;
            return setTimeout( handlerProxy, delay || 0 );
        },

        _hoverable: function( element ) {
            this.hoverable = this.hoverable.add( element );
            this._on( element, {
                mouseenter: function( event ) {
                    $( event.currentTarget ).addClass( "ui-state-hover" );
                },
                mouseleave: function( event ) {
                    $( event.currentTarget ).removeClass( "ui-state-hover" );
                }
            });
        },

        _focusable: function( element ) {
            this.focusable = this.focusable.add( element );
            this._on( element, {
                focusin: function( event ) {
                    $( event.currentTarget ).addClass( "ui-state-focus" );
                },
                focusout: function( event ) {
                    $( event.currentTarget ).removeClass( "ui-state-focus" );
                }
            });
        },

        _trigger: function( type, event, data ) {
            var prop, orig,
                callback = this.options[ type ];

            data = data || {};
            event = $.Event( event );
            event.type = ( type === this.widgetEventPrefix ?
                type :
                this.widgetEventPrefix + type ).toLowerCase();
            // the original event may come from any element
            // so we need to reset the target on the new event
            event.target = this.element[ 0 ];

            // copy original event properties over to the new event
            orig = event.originalEvent;
            if ( orig ) {
                for ( prop in orig ) {
                    if ( !( prop in event ) ) {
                        event[ prop ] = orig[ prop ];
                    }
                }
            }

            this.element.trigger( event, data );
            return !( $.isFunction( callback ) &&
                callback.apply( this.element[0], [ event ].concat( data ) ) === false ||
                event.isDefaultPrevented() );
        }
    };

    $.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) {
        $.Widget.prototype[ "_" + method ] = function( element, options, callback ) {
            if ( typeof options === "string" ) {
                options = { effect: options };
            }
            var hasOptions,
                effectName = !options ?
                    method :
                        options === true || typeof options === "number" ?
                    defaultEffect :
                    options.effect || defaultEffect;
            options = options || {};
            if ( typeof options === "number" ) {
                options = { duration: options };
            }
            hasOptions = !$.isEmptyObject( options );
            options.complete = callback;
            if ( options.delay ) {
                element.delay( options.delay );
            }
            if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) {
                element[ method ]( options );
            } else if ( effectName !== method && element[ effectName ] ) {
                element[ effectName ]( options.duration, options.easing, callback );
            } else {
                element.queue(function( next ) {
                    $( this )[ method ]();
                    if ( callback ) {
                        callback.call( element[ 0 ] );
                    }
                    next();
                });
            }
        };
    });

})( jQuery );
(function( $, undefined ) {

    var mouseHandled = false;
    $( document ).mouseup( function() {
        mouseHandled = false;
    });

    $.widget("ui.mouse", {
        version: "1.10.4",
        options: {
            cancel: "input,textarea,button,select,option",
            distance: 1,
            delay: 0
        },
        _mouseInit: function() {
            var that = this;

            this.element
                .bind("mousedown."+this.widgetName, function(event) {
                    return that._mouseDown(event);
                })
                .bind("click."+this.widgetName, function(event) {
                    if (true === $.data(event.target, that.widgetName + ".preventClickEvent")) {
                        $.removeData(event.target, that.widgetName + ".preventClickEvent");
                        event.stopImmediatePropagation();
                        return false;
                    }
                });

            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);
            if ( this._mouseMoveDelegate ) {
                $(document)
                    .unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
                    .unbind("mouseup."+this.widgetName, this._mouseUpDelegate);
            }
        },

        _mouseDown: function(event) {
            // don't let more than one widget handle mouseStart
            if( mouseHandled ) { return; }

            // we may have missed mouseup (out of window)
            (this._mouseStarted && this._mouseUp(event));

            this._mouseDownEvent = event;

            var that = this,
                btnIsLeft = (event.which === 1),
            // event.target.nodeName works around a bug in IE 8 with
            // disabled inputs (#7620)
                elIsCancel = (typeof this.options.cancel === "string" && event.target.nodeName ? $(event.target).closest(this.options.cancel).length : false);
            if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
                return true;
            }

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

            if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                this._mouseStarted = (this._mouseStart(event) !== false);
                if (!this._mouseStarted) {
                    event.preventDefault();
                    return true;
                }
            }

            // Click event may never have fired (Gecko & Opera)
            if (true === $.data(event.target, this.widgetName + ".preventClickEvent")) {
                $.removeData(event.target, this.widgetName + ".preventClickEvent");
            }

            // these delegates are required to keep context
            this._mouseMoveDelegate = function(event) {
                return that._mouseMove(event);
            };
            this._mouseUpDelegate = function(event) {
                return that._mouseUp(event);
            };
            $(document)
                .bind("mousemove."+this.widgetName, this._mouseMoveDelegate)
                .bind("mouseup."+this.widgetName, this._mouseUpDelegate);

            event.preventDefault();

            mouseHandled = true;
            return true;
        },

        _mouseMove: function(event) {
            // IE mouseup check - mouseup happened when mouse was out of window
            if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
                return this._mouseUp(event);
            }

            if (this._mouseStarted) {
                this._mouseDrag(event);
                return event.preventDefault();
            }

            if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
                this._mouseStarted =
                    (this._mouseStart(this._mouseDownEvent, event) !== false);
                (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
            }

            return !this._mouseStarted;
        },

        _mouseUp: function(event) {
            $(document)
                .unbind("mousemove."+this.widgetName, this._mouseMoveDelegate)
                .unbind("mouseup."+this.widgetName, this._mouseUpDelegate);

            if (this._mouseStarted) {
                this._mouseStarted = false;

                if (event.target === this._mouseDownEvent.target) {
                    $.data(event.target, this.widgetName + ".preventClickEvent", true);
                }

                this._mouseStop(event);
            }

            return false;
        },

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

        _mouseDelayMet: function(/* event */) {
            return this.mouseDelayMet;
        },

        // These are placeholder methods, to be overriden by extending plugin
        _mouseStart: function(/* event */) {},
        _mouseDrag: function(/* event */) {},
        _mouseStop: function(/* event */) {},
        _mouseCapture: function(/* event */) { return true; }
    });

})(jQuery);
(function( $, undefined ) {

    $.widget("ui.draggable", $.ui.mouse, {
        version: "1.10.4",
        widgetEventPrefix: "drag",
        options: {
            addClasses: true,
            appendTo: "parent",
            axis: false,
            connectToSortable: false,
            containment: false,
            cursor: "auto",
            cursorAt: false,
            grid: false,
            handle: false,
            helper: "original",
            iframeFix: false,
            opacity: false,
            refreshPositions: false,
            revert: false,
            revertDuration: 500,
            scope: "default",
            scroll: true,
            scrollSensitivity: 20,
            scrollSpeed: 20,
            snap: false,
            snapMode: "both",
            snapTolerance: 20,
            stack: false,
            zIndex: false,

            // callbacks
            drag: null,
            start: null,
            stop: null
        },
        _create: function() {

            if (this.options.helper === "original" && !(/^(?:r|a|f)/).test(this.element.css("position"))) {
                this.element[0].style.position = "relative";
            }
            if (this.options.addClasses){
                this.element.addClass("ui-draggable");
            }
            if (this.options.disabled){
                this.element.addClass("ui-draggable-disabled");
            }

            this._mouseInit();

        },

        _destroy: function() {
            this.element.removeClass( "ui-draggable ui-draggable-dragging ui-draggable-disabled" );
            this._mouseDestroy();
        },

        _mouseCapture: function(event) {

            var o = this.options;

            // among others, prevent a drag on a resizable-handle
            if (this.helper || o.disabled || $(event.target).closest(".ui-resizable-handle").length > 0) {
                return false;
            }

            //Quit if we're not on a valid handle
            this.handle = this._getHandle(event);
            if (!this.handle) {
                return false;
            }

            $(o.iframeFix === true ? "iframe" : o.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");
            });

            return true;

        },

        _mouseStart: function(event) {

            var o = this.options;

            //Create and append the visible helper
            this.helper = this._createHelper(event);

            this.helper.addClass("ui-draggable-dragging");

            //Cache the helper size
            this._cacheHelperProportions();

            //If ddmanager is used for droppables, set the global draggable
            if($.ui.ddmanager) {
                $.ui.ddmanager.current = this;
            }

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

            //Cache the margins of the original element
            this._cacheMargins();

            //Store the helper's css position
            this.cssPosition = this.helper.css( "position" );
            this.scrollParent = this.helper.scrollParent();
            this.offsetParent = this.helper.offsetParent();
            this.offsetParentCssPosition = this.offsetParent.css( "position" );

            //The element's absolute position on the page minus margins
            this.offset = this.positionAbs = this.element.offset();
            this.offset = {
                top: this.offset.top - this.margins.top,
                left: this.offset.left - this.margins.left
            };

            //Reset scroll cache
            this.offset.scroll = false;

            $.extend(this.offset, {
                click: { //Where the click happened, relative to the element
                    left: event.pageX - this.offset.left,
                    top: event.pageY - this.offset.top
                },
                parent: this._getParentOffset(),
                relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
            });

            //Generate the original position
            this.originalPosition = this.position = this._generatePosition(event);
            this.originalPageX = event.pageX;
            this.originalPageY = event.pageY;

            //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
            (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));

            //Set a containment if given in the options
            this._setContainment();

            //Trigger event + callbacks
            if(this._trigger("start", event) === false) {
                this._clear();
                return false;
            }

            //Recache the helper size
            this._cacheHelperProportions();

            //Prepare the droppable offsets
            if ($.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(this, event);
            }


            this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position

            //If the ddmanager is used for droppables, inform the manager that dragging has started (see #5003)
            if ( $.ui.ddmanager ) {
                $.ui.ddmanager.dragStart(this, event);
            }

            return true;
        },

        _mouseDrag: function(event, noPropagation) {
            // reset any necessary cached properties (see #5009)
            if ( this.offsetParentCssPosition === "fixed" ) {
                this.offset.parent = this._getParentOffset();
            }

            //Compute the helpers position
            this.position = this._generatePosition(event);
            this.positionAbs = this._convertPositionTo("absolute");

            //Call plugins and callbacks and use the resulting position if something is returned
            if (!noPropagation) {
                var ui = this._uiHash();
                if(this._trigger("drag", event, ui) === false) {
                    this._mouseUp({});
                    return false;
                }
                this.position = ui.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, event);
            }

            return false;
        },

        _mouseStop: function(event) {

            //If we are using droppables, inform the manager about the drop
            var that = this,
                dropped = false;
            if ($.ui.ddmanager && !this.options.dropBehaviour) {
                dropped = $.ui.ddmanager.drop(this, event);
            }

            //if a drop comes from outside (a sortable)
            if(this.dropped) {
                dropped = this.dropped;
                this.dropped = false;
            }

            //if the original element is no longer in the DOM don't bother to continue (see #8269)
            if ( this.options.helper === "original" && !$.contains( this.element[ 0 ].ownerDocument, this.element[ 0 ] ) ) {
                return false;
            }

            if((this.options.revert === "invalid" && !dropped) || (this.options.revert === "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) {
                $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() {
                    if(that._trigger("stop", event) !== false) {
                        that._clear();
                    }
                });
            } else {
                if(this._trigger("stop", event) !== false) {
                    this._clear();
                }
            }

            return false;
        },

        _mouseUp: function(event) {
            //Remove frame helpers
            $("div.ui-draggable-iframeFix").each(function() {
                this.parentNode.removeChild(this);
            });

            //If the ddmanager is used for droppables, inform the manager that dragging has stopped (see #5003)
            if( $.ui.ddmanager ) {
                $.ui.ddmanager.dragStop(this, event);
            }

            return $.ui.mouse.prototype._mouseUp.call(this, event);
        },

        cancel: function() {

            if(this.helper.is(".ui-draggable-dragging")) {
                this._mouseUp({});
            } else {
                this._clear();
            }

            return this;

        },

        _getHandle: function(event) {
            return this.options.handle ?
                !!$( event.target ).closest( this.element.find( this.options.handle ) ).length :
                true;
        },

        _createHelper: function(event) {

            var o = this.options,
                helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper === "clone" ? this.element.clone().removeAttr("id") : this.element);

            if(!helper.parents("body").length) {
                helper.appendTo((o.appendTo === "parent" ? this.element[0].parentNode : o.appendTo));
            }

            if(helper[0] !== this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) {
                helper.css("position", "absolute");
            }

            return helper;

        },

        _adjustOffsetFromHelper: function(obj) {
            if (typeof obj === "string") {
                obj = obj.split(" ");
            }
            if ($.isArray(obj)) {
                obj = {left: +obj[0], top: +obj[1] || 0};
            }
            if ("left" in obj) {
                this.offset.click.left = obj.left + this.margins.left;
            }
            if ("right" in obj) {
                this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
            }
            if ("top" in obj) {
                this.offset.click.top = obj.top + this.margins.top;
            }
            if ("bottom" in obj) {
                this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
            }
        },

        _getParentOffset: function() {

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

            // This is a special case where we need to modify a offset calculated on start, since the following happened:
            // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
            // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
            //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
            if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
                po.left += this.scrollParent.scrollLeft();
                po.top += this.scrollParent.scrollTop();
            }

            //This needs to be actually done for all browsers, since pageX/pageY includes this information
            //Ugly IE fix
            if((this.offsetParent[0] === document.body) ||
                (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
                po = { top: 0, left: 0 };
            }

            return {
                top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
                left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
            };

        },

        _getRelativeOffset: function() {

            if(this.cssPosition === "relative") {
                var p = this.element.position();
                return {
                    top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
                    left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
                };
            } else {
                return { top: 0, left: 0 };
            }

        },

        _cacheMargins: function() {
            this.margins = {
                left: (parseInt(this.element.css("marginLeft"),10) || 0),
                top: (parseInt(this.element.css("marginTop"),10) || 0),
                right: (parseInt(this.element.css("marginRight"),10) || 0),
                bottom: (parseInt(this.element.css("marginBottom"),10) || 0)
            };
        },

        _cacheHelperProportions: function() {
            this.helperProportions = {
                width: this.helper.outerWidth(),
                height: this.helper.outerHeight()
            };
        },

        _setContainment: function() {

            var over, c, ce,
                o = this.options;

            if ( !o.containment ) {
                this.containment = null;
                return;
            }

            if ( o.containment === "window" ) {
                this.containment = [
                        $( window ).scrollLeft() - this.offset.relative.left - this.offset.parent.left,
                        $( window ).scrollTop() - this.offset.relative.top - this.offset.parent.top,
                        $( window ).scrollLeft() + $( window ).width() - this.helperProportions.width - this.margins.left,
                        $( window ).scrollTop() + ( $( window ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
                ];
                return;
            }

            if ( o.containment === "document") {
                this.containment = [
                    0,
                    0,
                        $( document ).width() - this.helperProportions.width - this.margins.left,
                        ( $( document ).height() || document.body.parentNode.scrollHeight ) - this.helperProportions.height - this.margins.top
                ];
                return;
            }

            if ( o.containment.constructor === Array ) {
                this.containment = o.containment;
                return;
            }

            if ( o.containment === "parent" ) {
                o.containment = this.helper[ 0 ].parentNode;
            }

            c = $( o.containment );
            ce = c[ 0 ];

            if( !ce ) {
                return;
            }

            over = c.css( "overflow" ) !== "hidden";

            this.containment = [
                    ( parseInt( c.css( "borderLeftWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingLeft" ), 10 ) || 0 ),
                    ( parseInt( c.css( "borderTopWidth" ), 10 ) || 0 ) + ( parseInt( c.css( "paddingTop" ), 10 ) || 0 ) ,
                    ( over ? Math.max( ce.scrollWidth, ce.offsetWidth ) : ce.offsetWidth ) - ( parseInt( c.css( "borderRightWidth" ), 10 ) || 0 ) - ( parseInt( c.css( "paddingRight" ), 10 ) || 0 ) - this.helperProportions.width - this.margins.left - this.margins.right,
                    ( over ? Math.max( ce.scrollHeight, ce.offsetHeight ) : ce.offsetHeight ) - ( parseInt( c.css( "borderBottomWidth" ), 10 ) || 0 ) - ( parseInt( c.css( "paddingBottom" ), 10 ) || 0 ) - this.helperProportions.height - this.margins.top  - this.margins.bottom
            ];
            this.relative_container = c;
        },

        _convertPositionTo: function(d, pos) {

            if(!pos) {
                pos = this.position;
            }

            var mod = d === "absolute" ? 1 : -1,
                scroll = this.cssPosition === "absolute" && !( this.scrollParent[ 0 ] !== document && $.contains( this.scrollParent[ 0 ], this.offsetParent[ 0 ] ) ) ? this.offsetParent : this.scrollParent;

            //Cache the scroll
            if (!this.offset.scroll) {
                this.offset.scroll = {top : scroll.scrollTop(), left : scroll.scrollLeft()};
            }

            return {
                top: (
                    pos.top	+																// The absolute mouse 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.scrollParent.scrollTop() : this.offset.scroll.top ) * mod )
                    ),
                left: (
                    pos.left +																// The absolute mouse 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.scrollParent.scrollLeft() : this.offset.scroll.left ) * mod )
                    )
            };

        },

        _generatePosition: function(event) {

            var containment, co, top, left,
                o = this.options,
                scroll = this.cssPosition === "absolute" && !( this.scrollParent[ 0 ] !== document && $.contains( this.scrollParent[ 0 ], this.offsetParent[ 0 ] ) ) ? this.offsetParent : this.scrollParent,
                pageX = event.pageX,
                pageY = event.pageY;

            //Cache the scroll
            if (!this.offset.scroll) {
                this.offset.scroll = {top : scroll.scrollTop(), left : scroll.scrollLeft()};
            }

            /*
             * - Position constraining -
             * Constrain the position to a mix of grid, containment.
             */

            // If we are not dragging yet, we won't check for options
            if ( this.originalPosition ) {
                if ( this.containment ) {
                    if ( this.relative_container ){
                        co = this.relative_container.offset();
                        containment = [
                                this.containment[ 0 ] + co.left,
                                this.containment[ 1 ] + co.top,
                                this.containment[ 2 ] + co.left,
                                this.containment[ 3 ] + co.top
                        ];
                    }
                    else {
                        containment = this.containment;
                    }

                    if(event.pageX - this.offset.click.left < containment[0]) {
                        pageX = containment[0] + this.offset.click.left;
                    }
                    if(event.pageY - this.offset.click.top < containment[1]) {
                        pageY = containment[1] + this.offset.click.top;
                    }
                    if(event.pageX - this.offset.click.left > containment[2]) {
                        pageX = containment[2] + this.offset.click.left;
                    }
                    if(event.pageY - this.offset.click.top > containment[3]) {
                        pageY = containment[3] + this.offset.click.top;
                    }
                }

                if(o.grid) {
                    //Check for grid elements set to 0 to prevent divide by 0 error causing invalid argument errors in IE (see ticket #6950)
                    top = o.grid[1] ? this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1] : this.originalPageY;
                    pageY = containment ? ((top - this.offset.click.top >= containment[1] || top - this.offset.click.top > containment[3]) ? top : ((top - this.offset.click.top >= containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

                    left = o.grid[0] ? this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0] : this.originalPageX;
                    pageX = containment ? ((left - this.offset.click.left >= containment[0] || left - this.offset.click.left > containment[2]) ? left : ((left - this.offset.click.left >= containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
                }

            }

            return {
                top: (
                    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.scrollParent.scrollTop() : this.offset.scroll.top )
                    ),
                left: (
                    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.scrollParent.scrollLeft() : this.offset.scroll.left )
                    )
            };

        },

        _clear: function() {
            this.helper.removeClass("ui-draggable-dragging");
            if(this.helper[0] !== this.element[0] && !this.cancelHelperRemoval) {
                this.helper.remove();
            }
            this.helper = null;
            this.cancelHelperRemoval = false;
        },

        // From now on bulk stuff - mainly helpers

        _trigger: function(type, event, ui) {
            ui = ui || this._uiHash();
            $.ui.plugin.call(this, type, [event, ui]);
            //The absolute position has to be recalculated after plugins
            if(type === "drag") {
                this.positionAbs = this._convertPositionTo("absolute");
            }
            return $.Widget.prototype._trigger.call(this, type, event, ui);
        },

        plugins: {},

        _uiHash: function() {
            return {
                helper: this.helper,
                position: this.position,
                originalPosition: this.originalPosition,
                offset: this.positionAbs
            };
        }

    });

    $.ui.plugin.add("draggable", "connectToSortable", {
        start: function(event, ui) {

            var inst = $(this).data("ui-draggable"), o = inst.options,
                uiSortable = $.extend({}, ui, { item: inst.element });
            inst.sortables = [];
            $(o.connectToSortable).each(function() {
                var sortable = $.data(this, "ui-sortable");
                if (sortable && !sortable.options.disabled) {
                    inst.sortables.push({
                        instance: sortable,
                        shouldRevert: sortable.options.revert
                    });
                    sortable.refreshPositions();	// Call the sortable's refreshPositions at drag start to refresh the containerCache since the sortable container cache is used in drag and needs to be up to date (this will ensure it's initialised as well as being kept in step with any changes that might have happened on the page).
                    sortable._trigger("activate", event, uiSortable);
                }
            });

        },
        stop: function(event, ui) {

            //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper
            var inst = $(this).data("ui-draggable"),
                uiSortable = $.extend({}, ui, { item: inst.element });

            $.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)

                    //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: "valid/invalid"
                    if(this.shouldRevert) {
                        this.instance.options.revert = this.shouldRevert;
                    }

                    //Trigger the stop of the sortable
                    this.instance._mouseStop(event);

                    this.instance.options.helper = this.instance.options._helper;

                    //If the helper has been the original item, restore properties in the sortable
                    if(inst.options.helper === "original") {
                        this.instance.currentItem.css({ top: "auto", left: "auto" });
                    }

                } else {
                    this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance
                    this.instance._trigger("deactivate", event, uiSortable);
                }

            });

        },
        drag: function(event, ui) {

            var inst = $(this).data("ui-draggable"), that = this;

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

                var innermostIntersecting = false,
                    thisSortable = this;

                //Copy over some variables to allow calling the sortable's native _intersectsWith
                this.instance.positionAbs = inst.positionAbs;
                this.instance.helperProportions = inst.helperProportions;
                this.instance.offset.click = inst.offset.click;

                if(this.instance._intersectsWith(this.instance.containerCache)) {
                    innermostIntersecting = true;
                    $.each(inst.sortables, function () {
                        this.instance.positionAbs = inst.positionAbs;
                        this.instance.helperProportions = inst.helperProportions;
                        this.instance.offset.click = inst.offset.click;
                        if (this !== thisSortable &&
                            this.instance._intersectsWith(this.instance.containerCache) &&
                            $.contains(thisSortable.instance.element[0], this.instance.element[0])
                            ) {
                            innermostIntersecting = false;
                        }
                        return innermostIntersecting;
                    });
                }


                if(innermostIntersecting) {
                    //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 = $(that).clone().removeAttr("id").appendTo(this.instance.element).data("ui-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]; };

                        event.target = this.instance.currentItem[0];
                        this.instance._mouseCapture(event, true);
                        this.instance._mouseStart(event, 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._trigger("toSortable", event);
                        inst.dropped = this.instance.element; //draggable revert needs that
                        //hack so receive/update callbacks work (mostly)
                        inst.currentItem = inst.element;
                        this.instance.fromOutside = inst;

                    }

                    //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(event);
                    }

                } 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;

                        //Prevent reverting on this forced stop
                        this.instance.options.revert = false;

                        // The out event needs to be triggered independently
                        this.instance._trigger("out", event, this.instance._uiHash(this.instance));

                        this.instance._mouseStop(event, 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._trigger("fromSortable", event);
                        inst.dropped = false; //draggable revert needs that
                    }

                }

            });

        }
    });

    $.ui.plugin.add("draggable", "cursor", {
        start: function() {
            var t = $("body"), o = $(this).data("ui-draggable").options;
            if (t.css("cursor")) {
                o._cursor = t.css("cursor");
            }
            t.css("cursor", o.cursor);
        },
        stop: function() {
            var o = $(this).data("ui-draggable").options;
            if (o._cursor) {
                $("body").css("cursor", o._cursor);
            }
        }
    });

    $.ui.plugin.add("draggable", "opacity", {
        start: function(event, ui) {
            var t = $(ui.helper), o = $(this).data("ui-draggable").options;
            if(t.css("opacity")) {
                o._opacity = t.css("opacity");
            }
            t.css("opacity", o.opacity);
        },
        stop: function(event, ui) {
            var o = $(this).data("ui-draggable").options;
            if(o._opacity) {
                $(ui.helper).css("opacity", o._opacity);
            }
        }
    });

    $.ui.plugin.add("draggable", "scroll", {
        start: function() {
            var i = $(this).data("ui-draggable");
            if(i.scrollParent[0] !== document && i.scrollParent[0].tagName !== "HTML") {
                i.overflowOffset = i.scrollParent.offset();
            }
        },
        drag: function( event ) {

            var i = $(this).data("ui-draggable"), o = i.options, scrolled = false;

            if(i.scrollParent[0] !== document && i.scrollParent[0].tagName !== "HTML") {

                if(!o.axis || o.axis !== "x") {
                    if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
                        i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed;
                    } else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) {
                        i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed;
                    }
                }

                if(!o.axis || o.axis !== "y") {
                    if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
                        i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed;
                    } else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) {
                        i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed;
                    }
                }

            } else {

                if(!o.axis || o.axis !== "x") {
                    if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
                    } else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
                    }
                }

                if(!o.axis || o.axis !== "y") {
                    if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
                    } else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
                    }
                }

            }

            if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(i, event);
            }

        }
    });

    $.ui.plugin.add("draggable", "snap", {
        start: function() {

            var i = $(this).data("ui-draggable"),
                o = i.options;

            i.snapElements = [];

            $(o.snap.constructor !== String ? ( o.snap.items || ":data(ui-draggable)" ) : o.snap).each(function() {
                var $t = $(this),
                    $o = $t.offset();
                if(this !== i.element[0]) {
                    i.snapElements.push({
                        item: this,
                        width: $t.outerWidth(), height: $t.outerHeight(),
                        top: $o.top, left: $o.left
                    });
                }
            });

        },
        drag: function(event, ui) {

            var ts, bs, ls, rs, l, r, t, b, i, first,
                inst = $(this).data("ui-draggable"),
                o = inst.options,
                d = o.snapTolerance,
                x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width,
                y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height;

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

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

                if ( x2 < l - d || x1 > r + d || y2 < t - d || y1 > b + d || !$.contains( inst.snapElements[ i ].item.ownerDocument, inst.snapElements[ i ].item ) ) {
                    if(inst.snapElements[i].snapping) {
                        (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
                    }
                    inst.snapElements[i].snapping = false;
                    continue;
                }

                if(o.snapMode !== "inner") {
                    ts = Math.abs(t - y2) <= d;
                    bs = Math.abs(b - y1) <= d;
                    ls = Math.abs(l - x2) <= d;
                    rs = Math.abs(r - x1) <= d;
                    if(ts) {
                        ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
                    }
                    if(bs) {
                        ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top;
                    }
                    if(ls) {
                        ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left;
                    }
                    if(rs) {
                        ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left;
                    }
                }

                first = (ts || bs || ls || rs);

                if(o.snapMode !== "outer") {
                    ts = Math.abs(t - y1) <= d;
                    bs = Math.abs(b - y2) <= d;
                    ls = Math.abs(l - x1) <= d;
                    rs = Math.abs(r - x2) <= d;
                    if(ts) {
                        ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top;
                    }
                    if(bs) {
                        ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top;
                    }
                    if(ls) {
                        ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left;
                    }
                    if(rs) {
                        ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left;
                    }
                }

                if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) {
                    (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item })));
                }
                inst.snapElements[i].snapping = (ts || bs || ls || rs || first);

            }

        }
    });

    $.ui.plugin.add("draggable", "stack", {
        start: function() {
            var min,
                o = this.data("ui-draggable").options,
                group = $.makeArray($(o.stack)).sort(function(a,b) {
                    return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0);
                });

            if (!group.length) { return; }

            min = parseInt($(group[0]).css("zIndex"), 10) || 0;
            $(group).each(function(i) {
                $(this).css("zIndex", min + i);
            });
            this.css("zIndex", (min + group.length));
        }
    });

    $.ui.plugin.add("draggable", "zIndex", {
        start: function(event, ui) {
            var t = $(ui.helper), o = $(this).data("ui-draggable").options;
            if(t.css("zIndex")) {
                o._zIndex = t.css("zIndex");
            }
            t.css("zIndex", o.zIndex);
        },
        stop: function(event, ui) {
            var o = $(this).data("ui-draggable").options;
            if(o._zIndex) {
                $(ui.helper).css("zIndex", o._zIndex);
            }
        }
    });

})(jQuery);
(function( $, undefined ) {

    function isOverAxis( x, reference, size ) {
        return ( x > reference ) && ( x < ( reference + size ) );
    }

    $.widget("ui.droppable", {
        version: "1.10.4",
        widgetEventPrefix: "drop",
        options: {
            accept: "*",
            activeClass: false,
            addClasses: true,
            greedy: false,
            hoverClass: false,
            scope: "default",
            tolerance: "intersect",

            // callbacks
            activate: null,
            deactivate: null,
            drop: null,
            out: null,
            over: null
        },
        _create: function() {

            var proportions,
                o = this.options,
                accept = o.accept;

            this.isover = false;
            this.isout = true;

            this.accept = $.isFunction(accept) ? accept : function(d) {
                return d.is(accept);
            };

            this.proportions = function( /* valueToWrite */ ) {
                if ( arguments.length ) {
                    // Store the droppable's proportions
                    proportions = arguments[ 0 ];
                } else {
                    // Retrieve or derive the droppable's proportions
                    return proportions ?
                        proportions :
                        proportions = {
                            width: this.element[ 0 ].offsetWidth,
                            height: this.element[ 0 ].offsetHeight
                        };
                }
            };

            // Add the reference and positions to the manager
            $.ui.ddmanager.droppables[o.scope] = $.ui.ddmanager.droppables[o.scope] || [];
            $.ui.ddmanager.droppables[o.scope].push(this);

            (o.addClasses && this.element.addClass("ui-droppable"));

        },

        _destroy: function() {
            var i = 0,
                drop = $.ui.ddmanager.droppables[this.options.scope];

            for ( ; i < drop.length; i++ ) {
                if ( drop[i] === this ) {
                    drop.splice(i, 1);
                }
            }

            this.element.removeClass("ui-droppable ui-droppable-disabled");
        },

        _setOption: function(key, value) {

            if(key === "accept") {
                this.accept = $.isFunction(value) ? value : function(d) {
                    return d.is(value);
                };
            }
            $.Widget.prototype._setOption.apply(this, arguments);
        },

        _activate: function(event) {
            var draggable = $.ui.ddmanager.current;
            if(this.options.activeClass) {
                this.element.addClass(this.options.activeClass);
            }
            if(draggable){
                this._trigger("activate", event, this.ui(draggable));
            }
        },

        _deactivate: function(event) {
            var draggable = $.ui.ddmanager.current;
            if(this.options.activeClass) {
                this.element.removeClass(this.options.activeClass);
            }
            if(draggable){
                this._trigger("deactivate", event, this.ui(draggable));
            }
        },

        _over: function(event) {

            var draggable = $.ui.ddmanager.current;

            // Bail if draggable and droppable are same element
            if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
                return;
            }

            if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
                if(this.options.hoverClass) {
                    this.element.addClass(this.options.hoverClass);
                }
                this._trigger("over", event, this.ui(draggable));
            }

        },

        _out: function(event) {

            var draggable = $.ui.ddmanager.current;

            // Bail if draggable and droppable are same element
            if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
                return;
            }

            if (this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
                if(this.options.hoverClass) {
                    this.element.removeClass(this.options.hoverClass);
                }
                this._trigger("out", event, this.ui(draggable));
            }

        },

        _drop: function(event,custom) {

            var draggable = custom || $.ui.ddmanager.current,
                childrenIntersection = false;

            // Bail if draggable and droppable are same element
            if (!draggable || (draggable.currentItem || draggable.element)[0] === this.element[0]) {
                return false;
            }

            this.element.find(":data(ui-droppable)").not(".ui-draggable-dragging").each(function() {
                var inst = $.data(this, "ui-droppable");
                if(
                    inst.options.greedy &&
                    !inst.options.disabled &&
                    inst.options.scope === draggable.options.scope &&
                    inst.accept.call(inst.element[0], (draggable.currentItem || draggable.element)) &&
                    $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)
                    ) { childrenIntersection = true; return false; }
            });
            if(childrenIntersection) {
                return false;
            }

            if(this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
                if(this.options.activeClass) {
                    this.element.removeClass(this.options.activeClass);
                }
                if(this.options.hoverClass) {
                    this.element.removeClass(this.options.hoverClass);
                }
                this._trigger("drop", event, this.ui(draggable));
                return this.element;
            }

            return false;

        },

        ui: function(c) {
            return {
                draggable: (c.currentItem || c.element),
                helper: c.helper,
                position: c.position,
                offset: c.positionAbs
            };
        }

    });

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

        if (!droppable.offset) {
            return false;
        }

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

        switch (toleranceMode) {
            case "fit":
                return (l <= x1 && x2 <= r && t <= y1 && y2 <= b);
            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
            case "pointer":
                draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left);
                draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top);
                return isOverAxis( draggableTop, t, droppable.proportions().height ) && isOverAxis( draggableLeft, l, droppable.proportions().width );
            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
                    );
            default:
                return false;
        }

    };

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

            var i, j,
                m = $.ui.ddmanager.droppables[t.options.scope] || [],
                type = event ? event.type : null, // workaround for #2317
                list = (t.currentItem || t.element).find(":data(ui-droppable)").addBack();

            droppablesLoop: for (i = 0; i < m.length; i++) {

                //No disabled and non-accepted
                if(m[i].options.disabled || (t && !m[i].accept.call(m[i].element[0],(t.currentItem || t.element)))) {
                    continue;
                }

                // Filter out elements in the current dragged item
                for (j=0; j < list.length; j++) {
                    if(list[j] === m[i].element[0]) {
                        m[i].proportions().height = 0;
                        continue droppablesLoop;
                    }
                }

                m[i].visible = m[i].element.css("display") !== "none";
                if(!m[i].visible) {
                    continue;
                }

                //Activate the droppable if used directly from draggables
                if(type === "mousedown") {
                    m[i]._activate.call(m[i], event);
                }

                m[ i ].offset = m[ i ].element.offset();
                m[ i ].proportions({ width: m[ i ].element[ 0 ].offsetWidth, height: m[ i ].element[ 0 ].offsetHeight });

            }

        },
        drop: function(draggable, event) {

            var dropped = false;
            // Create a copy of the droppables in case the list changes during the drop (#9116)
            $.each(($.ui.ddmanager.droppables[draggable.options.scope] || []).slice(), function() {

                if(!this.options) {
                    return;
                }
                if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance)) {
                    dropped = this._drop.call(this, event) || dropped;
                }

                if (!this.options.disabled && this.visible && this.accept.call(this.element[0],(draggable.currentItem || draggable.element))) {
                    this.isout = true;
                    this.isover = false;
                    this._deactivate.call(this, event);
                }

            });
            return dropped;

        },
        dragStart: function( draggable, event ) {
            //Listen for scrolling so that if the dragging causes scrolling the position of the droppables can be recalculated (see #5003)
            draggable.element.parentsUntil( "body" ).bind( "scroll.droppable", function() {
                if( !draggable.options.refreshPositions ) {
                    $.ui.ddmanager.prepareOffsets( draggable, event );
                }
            });
        },
        drag: function(draggable, event) {

            //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, event);
            }

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

                if(this.options.disabled || this.greedyChild || !this.visible) {
                    return;
                }

                var parentInstance, scope, parent,
                    intersects = $.ui.intersect(draggable, this, this.options.tolerance),
                    c = !intersects && this.isover ? "isout" : (intersects && !this.isover ? "isover" : null);
                if(!c) {
                    return;
                }

                if (this.options.greedy) {
                    // find droppable parents with same scope
                    scope = this.options.scope;
                    parent = this.element.parents(":data(ui-droppable)").filter(function () {
                        return $.data(this, "ui-droppable").options.scope === scope;
                    });

                    if (parent.length) {
                        parentInstance = $.data(parent[0], "ui-droppable");
                        parentInstance.greedyChild = (c === "isover");
                    }
                }

                // we just moved into a greedy child
                if (parentInstance && c === "isover") {
                    parentInstance.isover = false;
                    parentInstance.isout = true;
                    parentInstance._out.call(parentInstance, event);
                }

                this[c] = true;
                this[c === "isout" ? "isover" : "isout"] = false;
                this[c === "isover" ? "_over" : "_out"].call(this, event);

                // we just moved out of a greedy child
                if (parentInstance && c === "isout") {
                    parentInstance.isout = false;
                    parentInstance.isover = true;
                    parentInstance._over.call(parentInstance, event);
                }
            });

        },
        dragStop: function( draggable, event ) {
            draggable.element.parentsUntil( "body" ).unbind( "scroll.droppable" );
            //Call prepareOffsets one final time since IE does not fire return scroll events when overflow was caused by drag (see #5003)
            if( !draggable.options.refreshPositions ) {
                $.ui.ddmanager.prepareOffsets( draggable, event );
            }
        }
    };

})(jQuery);
(function( $, undefined ) {

    function isOverAxis( x, reference, size ) {
        return ( x > reference ) && ( x < ( reference + size ) );
    }

    function isFloating(item) {
        return (/left|right/).test(item.css("float")) || (/inline|table-cell/).test(item.css("display"));
    }

    $.widget("ui.sortable", $.ui.mouse, {
        version: "1.10.4",
        widgetEventPrefix: "sort",
        ready: false,
        options: {
            appendTo: "parent",
            axis: false,
            connectWith: false,
            containment: false,
            cursor: "auto",
            cursorAt: false,
            dropOnEmpty: true,
            forcePlaceholderSize: false,
            forceHelperSize: false,
            grid: false,
            handle: false,
            helper: "original",
            items: "> *",
            opacity: false,
            placeholder: false,
            revert: false,
            scroll: true,
            scrollSensitivity: 20,
            scrollSpeed: 20,
            scope: "default",
            tolerance: "intersect",
            zIndex: 1000,

            // callbacks
            activate: null,
            beforeStop: null,
            change: null,
            deactivate: null,
            out: null,
            over: null,
            receive: null,
            remove: null,
            sort: null,
            start: null,
            stop: null,
            update: null
        },
        _create: function() {

            var o = this.options;
            this.containerCache = {};
            this.element.addClass("ui-sortable");

            //Get the items
            this.refresh();

            //Let's determine if the items are being displayed horizontally
            this.floating = this.items.length ? o.axis === "x" || isFloating(this.items[0].item) : false;

            //Let's determine the parent's offset
            this.offset = this.element.offset();

            //Initialize mouse events for interaction
            this._mouseInit();

            //We're ready to go
            this.ready = true;

        },

        _destroy: function() {
            this.element
                .removeClass("ui-sortable ui-sortable-disabled");
            this._mouseDestroy();

            for ( var i = this.items.length - 1; i >= 0; i-- ) {
                this.items[i].item.removeData(this.widgetName + "-item");
            }

            return this;
        },

        _setOption: function(key, value){
            if ( key === "disabled" ) {
                this.options[ key ] = value;

                this.widget().toggleClass( "ui-sortable-disabled", !!value );
            } else {
                // Don't call widget base _setOption for disable as it adds ui-state-disabled class
                $.Widget.prototype._setOption.apply(this, arguments);
            }
        },

        _mouseCapture: function(event, overrideHandle) {
            var currentItem = null,
                validHandle = false,
                that = this;

            if (this.reverting) {
                return false;
            }

            if(this.options.disabled || this.options.type === "static") {
                return false;
            }

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

            //Find out if the clicked node (or one of its parents) is a actual item in this.items
            $(event.target).parents().each(function() {
                if($.data(this, that.widgetName + "-item") === that) {
                    currentItem = $(this);
                    return false;
                }
            });
            if($.data(event.target, that.widgetName + "-item") === that) {
                currentItem = $(event.target);
            }

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

            this.currentItem = currentItem;
            this._removeCurrentsFromItems();
            return true;

        },

        _mouseStart: function(event, overrideHandle, noActivation) {

            var i, body,
                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 = this._createHelper(event);

            //Cache the helper size
            this._cacheHelperProportions();

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

            //Cache the margins of the original element
            this._cacheMargins();

            //Get the next scrolling parent
            this.scrollParent = this.helper.scrollParent();

            //The element's absolute position on the page minus margins
            this.offset = this.currentItem.offset();
            this.offset = {
                top: this.offset.top - this.margins.top,
                left: this.offset.left - this.margins.left
            };

            $.extend(this.offset, {
                click: { //Where the click happened, relative to the element
                    left: event.pageX - this.offset.left,
                    top: event.pageY - this.offset.top
                },
                parent: this._getParentOffset(),
                relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
            });

            // Only after we got the offset, we can change the helper's position to absolute
            // TODO: Still need to figure out a way to make relative sorting possible
            this.helper.css("position", "absolute");
            this.cssPosition = this.helper.css("position");

            //Generate the original position
            this.originalPosition = this._generatePosition(event);
            this.originalPageX = event.pageX;
            this.originalPageY = event.pageY;

            //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
            (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));

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

            //If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
            if(this.helper[0] !== this.currentItem[0]) {
                this.currentItem.hide();
            }

            //Create the placeholder
            this._createPlaceholder();

            //Set a containment if given in the options
            if(o.containment) {
                this._setContainment();
            }

            if( o.cursor && o.cursor !== "auto" ) { // cursor option
                body = this.document.find( "body" );

                // support: IE
                this.storedCursor = body.css( "cursor" );
                body.css( "cursor", o.cursor );

                this.storedStylesheet = $( "<style>*{ cursor: "+o.cursor+" !important; }</style>" ).appendTo( body );
            }

            if(o.opacity) { // opacity option
                if (this.helper.css("opacity")) {
                    this._storedOpacity = this.helper.css("opacity");
                }
                this.helper.css("opacity", o.opacity);
            }

            if(o.zIndex) { // zIndex option
                if (this.helper.css("zIndex")) {
                    this._storedZIndex = this.helper.css("zIndex");
                }
                this.helper.css("zIndex", o.zIndex);
            }

            //Prepare scrolling
            if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
                this.overflowOffset = this.scrollParent.offset();
            }

            //Call callbacks
            this._trigger("start", event, this._uiHash());

            //Recache the helper size
            if(!this._preserveHelperProportions) {
                this._cacheHelperProportions();
            }


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

            //Prepare possible droppables
            if($.ui.ddmanager) {
                $.ui.ddmanager.current = this;
            }

            if ($.ui.ddmanager && !o.dropBehaviour) {
                $.ui.ddmanager.prepareOffsets(this, event);
            }

            this.dragging = true;

            this.helper.addClass("ui-sortable-helper");
            this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
            return true;

        },

        _mouseDrag: function(event) {
            var i, item, itemElement, intersection,
                o = this.options,
                scrolled = false;

            //Compute the helpers position
            this.position = this._generatePosition(event);
            this.positionAbs = this._convertPositionTo("absolute");

            if (!this.lastPositionAbs) {
                this.lastPositionAbs = this.positionAbs;
            }

            //Do scrolling
            if(this.options.scroll) {
                if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {

                    if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
                        this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
                    } else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
                        this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
                    }

                    if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
                        this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
                    } else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
                        this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
                    }

                } else {

                    if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
                    } else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
                        scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
                    }

                    if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
                    } else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
                        scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
                    }

                }

                if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
                    $.ui.ddmanager.prepareOffsets(this, event);
                }
            }

            //Regenerate the absolute position used for position checks
            this.positionAbs = this._convertPositionTo("absolute");

            //Set the helper 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";
            }

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

                //Cache variables and intersection, continue if no intersection
                item = this.items[i];
                itemElement = item.item[0];
                intersection = this._intersectsWithPointer(item);
                if (!intersection) {
                    continue;
                }

                // Only put the placeholder inside the current Container, skip all
                // items from other containers. This works because when moving
                // an item from one container to another the
                // currentContainer is switched before the placeholder is moved.
                //
                // Without this, moving items in "sub-sortables" can cause
                // the placeholder to jitter beetween the outer and inner container.
                if (item.instance !== this.currentContainer) {
                    continue;
                }

                // cannot intersect with itself
                // no useless actions that have been done before
                // no action if the item moved is the parent of the item checked
                if (itemElement !== this.currentItem[0] &&
                    this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
                    !$.contains(this.placeholder[0], itemElement) &&
                    (this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
                    ) {

                    this.direction = intersection === 1 ? "down" : "up";

                    if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
                        this._rearrange(event, item);
                    } else {
                        break;
                    }

                    this._trigger("change", event, this._uiHash());
                    break;
                }
            }

            //Post events to containers
            this._contactContainers(event);

            //Interconnect with droppables
            if($.ui.ddmanager) {
                $.ui.ddmanager.drag(this, event);
            }

            //Call callbacks
            this._trigger("sort", event, this._uiHash());

            this.lastPositionAbs = this.positionAbs;
            return false;

        },

        _mouseStop: function(event, noPropagation) {

            if(!event) {
                return;
            }

            //If we are using droppables, inform the manager about the drop
            if ($.ui.ddmanager && !this.options.dropBehaviour) {
                $.ui.ddmanager.drop(this, event);
            }

            if(this.options.revert) {
                var that = this,
                    cur = this.placeholder.offset(),
                    axis = this.options.axis,
                    animation = {};

                if ( !axis || axis === "x" ) {
                    animation.left = cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollLeft);
                }
                if ( !axis || axis === "y" ) {
                    animation.top = cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollTop);
                }
                this.reverting = true;
                $(this.helper).animate( animation, parseInt(this.options.revert, 10) || 500, function() {
                    that._clear(event);
                });
            } else {
                this._clear(event, noPropagation);
            }

            return false;

        },

        cancel: function() {

            if(this.dragging) {

                this._mouseUp({ target: null });

                if(this.options.helper === "original") {
                    this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
                } else {
                    this.currentItem.show();
                }

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

            }

            if (this.placeholder) {
                //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
                if(this.placeholder[0].parentNode) {
                    this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
                }
                if(this.options.helper !== "original" && this.helper && this.helper[0].parentNode) {
                    this.helper.remove();
                }

                $.extend(this, {
                    helper: null,
                    dragging: false,
                    reverting: false,
                    _noFinalSort: null
                });

                if(this.domPosition.prev) {
                    $(this.domPosition.prev).after(this.currentItem);
                } else {
                    $(this.domPosition.parent).prepend(this.currentItem);
                }
            }

            return this;

        },

        serialize: function(o) {

            var items = this._getItemsAsjQuery(o && o.connected),
                str = [];
            o = o || {};

            $(items).each(function() {
                var res = ($(o.item || this).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[\-=_](.+)/));
                if (res) {
                    str.push((o.key || res[1]+"[]")+"="+(o.key && o.expression ? res[1] : res[2]));
                }
            });

            if(!str.length && o.key) {
                str.push(o.key + "=");
            }

            return str.join("&");

        },

        toArray: function(o) {

            var items = this._getItemsAsjQuery(o && o.connected),
                ret = [];

            o = o || {};

            items.each(function() { ret.push($(o.item || this).attr(o.attribute || "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,
                l = item.left,
                r = l + item.width,
                t = item.top,
                b = t + item.height,
                dyClick = this.offset.click.top,
                dxClick = this.offset.click.left,
                isOverElementHeight = ( this.options.axis === "x" ) || ( ( y1 + dyClick ) > t && ( y1 + dyClick ) < b ),
                isOverElementWidth = ( this.options.axis === "y" ) || ( ( x1 + dxClick ) > l && ( x1 + dxClick ) < r ),
                isOverElement = isOverElementHeight && isOverElementWidth;

            if ( this.options.tolerance === "pointer" ||
                this.options.forcePointerForContainers ||
                (this.options.tolerance !== "pointer" && this.helperProportions[this.floating ? "width" : "height"] > item[this.floating ? "width" : "height"])
                ) {
                return isOverElement;
            } 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

            }
        },

        _intersectsWithPointer: function(item) {

            var isOverElementHeight = (this.options.axis === "x") || isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
                isOverElementWidth = (this.options.axis === "y") || isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
                isOverElement = isOverElementHeight && isOverElementWidth,
                verticalDirection = this._getDragVerticalDirection(),
                horizontalDirection = this._getDragHorizontalDirection();

            if (!isOverElement) {
                return false;
            }

            return this.floating ?
                ( ((horizontalDirection && horizontalDirection === "right") || verticalDirection === "down") ? 2 : 1 )
                : ( verticalDirection && (verticalDirection === "down" ? 2 : 1) );

        },

        _intersectsWithSides: function(item) {

            var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
                isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
                verticalDirection = this._getDragVerticalDirection(),
                horizontalDirection = this._getDragHorizontalDirection();

            if (this.floating && horizontalDirection) {
                return ((horizontalDirection === "right" && isOverRightHalf) || (horizontalDirection === "left" && !isOverRightHalf));
            } else {
                return verticalDirection && ((verticalDirection === "down" && isOverBottomHalf) || (verticalDirection === "up" && !isOverBottomHalf));
            }

        },

        _getDragVerticalDirection: function() {
            var delta = this.positionAbs.top - this.lastPositionAbs.top;
            return delta !== 0 && (delta > 0 ? "down" : "up");
        },

        _getDragHorizontalDirection: function() {
            var delta = this.positionAbs.left - this.lastPositionAbs.left;
            return delta !== 0 && (delta > 0 ? "right" : "left");
        },

        refresh: function(event) {
            this._refreshItems(event);
            this.refreshPositions();
            return this;
        },

        _connectWith: function() {
            var options = this.options;
            return options.connectWith.constructor === String ? [options.connectWith] : options.connectWith;
        },

        _getItemsAsjQuery: function(connected) {

            var i, j, cur, inst,
                items = [],
                queries = [],
                connectWith = this._connectWith();

            if(connectWith && connected) {
                for (i = connectWith.length - 1; i >= 0; i--){
                    cur = $(connectWith[i]);
                    for ( j = cur.length - 1; j >= 0; j--){
                        inst = $.data(cur[j], this.widgetFullName);
                        if(inst && inst !== this && !inst.options.disabled) {
                            queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), inst]);
                        }
                    }
                }
            }

            queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), this]);

            function addItems() {
                items.push( this );
            }
            for (i = queries.length - 1; i >= 0; i--){
                queries[i][0].each( addItems );
            }

            return $(items);

        },

        _removeCurrentsFromItems: function() {

            var list = this.currentItem.find(":data(" + this.widgetName + "-item)");

            this.items = $.grep(this.items, function (item) {
                for (var j=0; j < list.length; j++) {
                    if(list[j] === item.item[0]) {
                        return false;
                    }
                }
                return true;
            });

        },

        _refreshItems: function(event) {

            this.items = [];
            this.containers = [this];

            var i, j, cur, inst, targetData, _queries, item, queriesLength,
                items = this.items,
                queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]],
                connectWith = this._connectWith();

            if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
                for (i = connectWith.length - 1; i >= 0; i--){
                    cur = $(connectWith[i]);
                    for (j = cur.length - 1; j >= 0; j--){
                        inst = $.data(cur[j], this.widgetFullName);
                        if(inst && inst !== this && !inst.options.disabled) {
                            queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
                            this.containers.push(inst);
                        }
                    }
                }
            }

            for (i = queries.length - 1; i >= 0; i--) {
                targetData = queries[i][1];
                _queries = queries[i][0];

                for (j=0, queriesLength = _queries.length; j < queriesLength; j++) {
                    item = $(_queries[j]);

                    item.data(this.widgetName + "-item", targetData); // Data for target checking (mouse manager)

                    items.push({
                        item: item,
                        instance: targetData,
                        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 && this.helper) {
                this.offset.parent = this._getParentOffset();
            }

            var i, item, t, p;

            for (i = this.items.length - 1; i >= 0; i--){
                item = this.items[i];

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

                t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;

                if (!fast) {
                    item.width = t.outerWidth();
                    item.height = t.outerHeight();
                }

                p = t.offset();
                item.left = p.left;
                item.top = p.top;
            }

            if(this.options.custom && this.options.custom.refreshContainers) {
                this.options.custom.refreshContainers.call(this);
            } else {
                for (i = this.containers.length - 1; i >= 0; i--){
                    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();
                }
            }

            return this;
        },

        _createPlaceholder: function(that) {
            that = that || this;
            var className,
                o = that.options;

            if(!o.placeholder || o.placeholder.constructor === String) {
                className = o.placeholder;
                o.placeholder = {
                    element: function() {

                        var nodeName = that.currentItem[0].nodeName.toLowerCase(),
                            element = $( "<" + nodeName + ">", that.document[0] )
                                .addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
                                .removeClass("ui-sortable-helper");

                        if ( nodeName === "tr" ) {
                            that.currentItem.children().each(function() {
                                $( "<td>&#160;</td>", that.document[0] )
                                    .attr( "colspan", $( this ).attr( "colspan" ) || 1 )
                                    .appendTo( element );
                            });
                        } else if ( nodeName === "img" ) {
                            element.attr( "src", that.currentItem.attr( "src" ) );
                        }

                        if ( !className ) {
                            element.css( "visibility", "hidden" );
                        }

                        return element;
                    },
                    update: function(container, p) {

                        // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
                        // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
                        if(className && !o.forcePlaceholderSize) {
                            return;
                        }

                        //If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item
                        if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css("paddingTop")||0, 10) - parseInt(that.currentItem.css("paddingBottom")||0, 10)); }
                        if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css("paddingLeft")||0, 10) - parseInt(that.currentItem.css("paddingRight")||0, 10)); }
                    }
                };
            }

            //Create the placeholder
            that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));

            //Append it after the actual current item
            that.currentItem.after(that.placeholder);

            //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
            o.placeholder.update(that, that.placeholder);

        },

        _contactContainers: function(event) {
            var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, base, cur, nearBottom, floating,
                innermostContainer = null,
                innermostIndex = null;

            // get innermost container that intersects with item
            for (i = this.containers.length - 1; i >= 0; i--) {

                // never consider a container that's located within the item itself
                if($.contains(this.currentItem[0], this.containers[i].element[0])) {
                    continue;
                }

                if(this._intersectsWith(this.containers[i].containerCache)) {

                    // if we've already found a container and it's more "inner" than this, then continue
                    if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) {
                        continue;
                    }

                    innermostContainer = this.containers[i];
                    innermostIndex = i;

                } else {
                    // container doesn't intersect. trigger "out" event if necessary
                    if(this.containers[i].containerCache.over) {
                        this.containers[i]._trigger("out", event, this._uiHash(this));
                        this.containers[i].containerCache.over = 0;
                    }
                }

            }

            // if no intersecting containers found, return
            if(!innermostContainer) {
                return;
            }

            // move the item into the container if it's not there already
            if(this.containers.length === 1) {
                if (!this.containers[innermostIndex].containerCache.over) {
                    this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
                    this.containers[innermostIndex].containerCache.over = 1;
                }
            } else {

                //When entering a new container, we will find the item with the least distance and append our item near it
                dist = 10000;
                itemWithLeastDistance = null;
                floating = innermostContainer.floating || isFloating(this.currentItem);
                posProperty = floating ? "left" : "top";
                sizeProperty = floating ? "width" : "height";
                base = this.positionAbs[posProperty] + this.offset.click[posProperty];
                for (j = this.items.length - 1; j >= 0; j--) {
                    if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) {
                        continue;
                    }
                    if(this.items[j].item[0] === this.currentItem[0]) {
                        continue;
                    }
                    if (floating && !isOverAxis(this.positionAbs.top + this.offset.click.top, this.items[j].top, this.items[j].height)) {
                        continue;
                    }
                    cur = this.items[j].item.offset()[posProperty];
                    nearBottom = false;
                    if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){
                        nearBottom = true;
                        cur += this.items[j][sizeProperty];
                    }

                    if(Math.abs(cur - base) < dist) {
                        dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
                        this.direction = nearBottom ? "up": "down";
                    }
                }

                //Check if dropOnEmpty is enabled
                if(!itemWithLeastDistance && !this.options.dropOnEmpty) {
                    return;
                }

                if(this.currentContainer === this.containers[innermostIndex]) {
                    return;
                }

                itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
                this._trigger("change", event, this._uiHash());
                this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
                this.currentContainer = this.containers[innermostIndex];

                //Update the placeholder
                this.options.placeholder.update(this.currentContainer, this.placeholder);

                this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
                this.containers[innermostIndex].containerCache.over = 1;
            }


        },

        _createHelper: function(event) {

            var o = this.options,
                helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper === "clone" ? this.currentItem.clone() : this.currentItem);

            //Add the helper to the DOM if that didn't happen already
            if(!helper.parents("body").length) {
                $(o.appendTo !== "parent" ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
            }

            if(helper[0] === this.currentItem[0]) {
                this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
            }

            if(!helper[0].style.width || o.forceHelperSize) {
                helper.width(this.currentItem.width());
            }
            if(!helper[0].style.height || o.forceHelperSize) {
                helper.height(this.currentItem.height());
            }

            return helper;

        },

        _adjustOffsetFromHelper: function(obj) {
            if (typeof obj === "string") {
                obj = obj.split(" ");
            }
            if ($.isArray(obj)) {
                obj = {left: +obj[0], top: +obj[1] || 0};
            }
            if ("left" in obj) {
                this.offset.click.left = obj.left + this.margins.left;
            }
            if ("right" in obj) {
                this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
            }
            if ("top" in obj) {
                this.offset.click.top = obj.top + this.margins.top;
            }
            if ("bottom" in obj) {
                this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
            }
        },

        _getParentOffset: function() {


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

            // This is a special case where we need to modify a offset calculated on start, since the following happened:
            // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
            // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
            //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
            if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
                po.left += this.scrollParent.scrollLeft();
                po.top += this.scrollParent.scrollTop();
            }

            // This needs to be actually done for all browsers, since pageX/pageY includes this information
            // with an ugly IE fix
            if( this.offsetParent[0] === document.body || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
                po = { top: 0, left: 0 };
            }

            return {
                top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
                left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
            };

        },

        _getRelativeOffset: function() {

            if(this.cssPosition === "relative") {
                var p = this.currentItem.position();
                return {
                    top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
                    left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
                };
            } else {
                return { top: 0, left: 0 };
            }

        },

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

        _cacheHelperProportions: function() {
            this.helperProportions = {
                width: this.helper.outerWidth(),
                height: this.helper.outerHeight()
            };
        },

        _setContainment: function() {

            var ce, co, over,
                o = this.options;
            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,
                        $(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
                        ($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
                ];
            }

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

                this.containment = [
                        co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
                        co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
                        co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left,
                        co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top
                ];
            }

        },

        _convertPositionTo: function(d, pos) {

            if(!pos) {
                pos = this.position;
            }
            var mod = d === "absolute" ? 1 : -1,
                scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
                scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

            return {
                top: (
                    pos.top	+																// The absolute mouse 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.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
                    ),
                left: (
                    pos.left +																// The absolute mouse 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.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
                    )
            };

        },

        _generatePosition: function(event) {

            var top, left,
                o = this.options,
                pageX = event.pageX,
                pageY = event.pageY,
                scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

            // This is another very weird special case that only happens for relative elements:
            // 1. If the css position is relative
            // 2. and the scroll parent is the document or similar to the offset parent
            // we have to refresh the relative offset during the scroll so there are no jumps
            if(this.cssPosition === "relative" && !(this.scrollParent[0] !== document && this.scrollParent[0] !== this.offsetParent[0])) {
                this.offset.relative = this._getRelativeOffset();
            }

            /*
             * - Position constraining -
             * Constrain the position to a mix of grid, containment.
             */

            if(this.originalPosition) { //If we are not dragging yet, we won't check for options

                if(this.containment) {
                    if(event.pageX - this.offset.click.left < this.containment[0]) {
                        pageX = this.containment[0] + this.offset.click.left;
                    }
                    if(event.pageY - this.offset.click.top < this.containment[1]) {
                        pageY = this.containment[1] + this.offset.click.top;
                    }
                    if(event.pageX - this.offset.click.left > this.containment[2]) {
                        pageX = this.containment[2] + this.offset.click.left;
                    }
                    if(event.pageY - this.offset.click.top > this.containment[3]) {
                        pageY = this.containment[3] + this.offset.click.top;
                    }
                }

                if(o.grid) {
                    top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
                    pageY = this.containment ? ( (top - this.offset.click.top >= this.containment[1] && top - this.offset.click.top <= this.containment[3]) ? top : ((top - this.offset.click.top >= this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;

                    left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
                    pageX = this.containment ? ( (left - this.offset.click.left >= this.containment[0] && left - this.offset.click.left <= this.containment[2]) ? left : ((left - this.offset.click.left >= this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
                }

            }

            return {
                top: (
                    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.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
                    ),
                left: (
                    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.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
                    )
            };

        },

        _rearrange: function(event, i, a, hardRefresh) {

            a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction === "down" ? i.item[0] : i.item[0].nextSibling));

            //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 counter = this.counter;

            this._delay(function() {
                if(counter === this.counter) {
                    this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
                }
            });

        },

        _clear: function(event, noPropagation) {

            this.reverting = false;
            // We delay all events that have to be triggered to after the point where the placeholder has been removed and
            // everything else normalized again
            var i,
                delayedTriggers = [];

            // We first have to update the dom position of the actual currentItem
            // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
            if(!this._noFinalSort && this.currentItem.parent().length) {
                this.placeholder.before(this.currentItem);
            }
            this._noFinalSort = null;

            if(this.helper[0] === this.currentItem[0]) {
                for(i in this._storedCSS) {
                    if(this._storedCSS[i] === "auto" || this._storedCSS[i] === "static") {
                        this._storedCSS[i] = "";
                    }
                }
                this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
            } else {
                this.currentItem.show();
            }

            if(this.fromOutside && !noPropagation) {
                delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
            }
            if((this.fromOutside || this.domPosition.prev !== this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent !== this.currentItem.parent()[0]) && !noPropagation) {
                delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
            }

            // Check if the items Container has Changed and trigger appropriate
            // events.
            if (this !== this.currentContainer) {
                if(!noPropagation) {
                    delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
                    delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); };  }).call(this, this.currentContainer));
                    delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this));  }; }).call(this, this.currentContainer));
                }
            }


            //Post events to containers
            function delayEvent( type, instance, container ) {
                return function( event ) {
                    container._trigger( type, event, instance._uiHash( instance ) );
                };
            }
            for (i = this.containers.length - 1; i >= 0; i--){
                if (!noPropagation) {
                    delayedTriggers.push( delayEvent( "deactivate", this, this.containers[ i ] ) );
                }
                if(this.containers[i].containerCache.over) {
                    delayedTriggers.push( delayEvent( "out", this, this.containers[ i ] ) );
                    this.containers[i].containerCache.over = 0;
                }
            }

            //Do what was originally in plugins
            if ( this.storedCursor ) {
                this.document.find( "body" ).css( "cursor", this.storedCursor );
                this.storedStylesheet.remove();
            }
            if(this._storedOpacity) {
                this.helper.css("opacity", this._storedOpacity);
            }
            if(this._storedZIndex) {
                this.helper.css("zIndex", this._storedZIndex === "auto" ? "" : this._storedZIndex);
            }

            this.dragging = false;
            if(this.cancelHelperRemoval) {
                if(!noPropagation) {
                    this._trigger("beforeStop", event, this._uiHash());
                    for (i=0; i < delayedTriggers.length; i++) {
                        delayedTriggers[i].call(this, event);
                    } //Trigger all delayed events
                    this._trigger("stop", event, this._uiHash());
                }

                this.fromOutside = false;
                return false;
            }

            if(!noPropagation) {
                this._trigger("beforeStop", event, this._uiHash());
            }

            //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
            this.placeholder[0].parentNode.removeChild(this.placeholder[0]);

            if(this.helper[0] !== this.currentItem[0]) {
                this.helper.remove();
            }
            this.helper = null;

            if(!noPropagation) {
                for (i=0; i < delayedTriggers.length; i++) {
                    delayedTriggers[i].call(this, event);
                } //Trigger all delayed events
                this._trigger("stop", event, this._uiHash());
            }

            this.fromOutside = false;
            return true;

        },

        _trigger: function() {
            if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
                this.cancel();
            }
        },

        _uiHash: function(_inst) {
            var inst = _inst || this;
            return {
                helper: inst.helper,
                placeholder: inst.placeholder || $([]),
                position: inst.position,
                originalPosition: inst.originalPosition,
                offset: inst.positionAbs,
                item: inst.currentItem,
                sender: _inst ? _inst.element : null
            };
        }

    });

})(jQuery);
