/*! jQuery UI - v1.12.1 - 2017-06-02
* http://jqueryui.com
* Includes: widget.js, data.js, disable-selection.js, scroll-parent.js, widgets/draggable.js, widgets/droppable.js, widgets/resizable.js, widgets/selectable.js, widgets/sortable.js, widgets/mouse.js
* Copyright jQuery Foundation and other contributors; Licensed MIT */

(function (factory) {
	if (typeof define === "function" && define.amd) {
		// AMD. Register as an anonymous module.
		define(["jquery"], factory);
	} else {
		// Browser globals
		factory(jQuery);
	}
}(function ($) {
	$.ui = $.ui || {};

	var version = $.ui.version = "1.12.1";

	/*!
	 * jQuery UI Widget 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Widget
	//>>group: Core
	//>>description: Provides a factory for creating stateful widgets with a common API.
	//>>docs: http://api.jqueryui.com/jQuery.widget/
	//>>demos: http://jqueryui.com/widget/

	var widgetUuid = 0;
	var widgetSlice = Array.prototype.slice;

	$.cleanData = (function (orig) {
		return function (elems) {
			var events, elem, i;
			for (i = 0; (elem = elems[i]) != null; i++) {
				try {
					// Only trigger remove when necessary to save time
					events = $._data(elem, "events");
					if (events && events.remove) {
						$(elem).triggerHandler("remove");
					}

					// Http://bugs.jquery.com/ticket/8235
				} catch (e) { }
			}
			orig(elems);
		};
	})($.cleanData);

	$.widget = function (name, base, prototype) {
		var existingConstructor, constructor, basePrototype;

		// ProxiedPrototype allows the provided prototype to remain unmodified
		// so that it can be used as a mixin for multiple widgets (#8876)
		var proxiedPrototype = {};

		var namespace = name.split(".")[0];
		name = name.split(".")[1];
		var fullName = namespace + "-" + name;

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

		if ($.isArray(prototype)) {
			prototype = $.extend.apply(null, [{}].concat(prototype));
		}

		// 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 () {
				function _super() {
					return base.prototype[prop].apply(this, arguments);
				}

				function _superApply(args) {
					return base.prototype[prop].apply(this, args);
				}

				return function () {
					var __super = this._super;
					var __superApply = this._superApply;
					var 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);

		return constructor;
	};

	$.widget.extend = function (target) {
		var input = widgetSlice.call(arguments, 1);
		var inputIndex = 0;
		var inputLength = input.length;
		var key;
		var 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";
			var args = widgetSlice.call(arguments, 1);
			var returnValue = this;

			if (isMethodCall) {
				// If this is an empty collection, we need to have the instance method
				// return undefined instead of the jQuery instance
				if (!this.length && options === "instance") {
					returnValue = undefined;
				} else {
					this.each(function () {
						var methodValue;
						var instance = $.data(this, fullName);

						if (options === "instance") {
							returnValue = instance;
							return false;
						}

						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 {
				// Allow multiple hashes to be passed on init
				if (args.length) {
					options = $.widget.extend.apply(null, [options].concat(args));
				}

				this.each(function () {
					var instance = $.data(this, fullName);
					if (instance) {
						instance.option(options || {});
						if (instance._init) {
							instance._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: {
			classes: {},
			disabled: false,

			// Callbacks
			create: null
		},

		_createWidget: function (options, element) {
			element = $(element || this.defaultElement || this)[0];
			this.element = $(element);
			this.uuid = widgetUuid++;
			this.eventNamespace = "." + this.widgetName + this.uuid;

			this.bindings = $();
			this.hoverable = $();
			this.focusable = $();
			this.classesElementLookup = {};

			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.options = $.widget.extend({},
				this.options,
				this._getCreateOptions(),
				options);

			this._create();

			if (this.options.disabled) {
				this._setOptionDisabled(this.options.disabled);
			}

			this._trigger("create", null, this._getCreateEventData());
			this._init();
		},

		_getCreateOptions: function () {
			return {};
		},

		_getCreateEventData: $.noop,

		_create: $.noop,

		_init: $.noop,

		destroy: function () {
			var that = this;

			this._destroy();
			$.each(this.classesElementLookup, function (key, value) {
				that._removeClass(value, key);
			});

			// We can probably remove the unbind calls in 2.0
			// all event bindings should go through this._on()
			this.element
				.off(this.eventNamespace)
				.removeData(this.widgetFullName);
			this.widget()
				.off(this.eventNamespace)
				.removeAttr("aria-disabled");

			// Clean up events and states
			this.bindings.off(this.eventNamespace);
		},

		_destroy: $.noop,

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

		option: function (key, value) {
			var options = key;
			var parts;
			var curOption;
			var 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) {
			if (key === "classes") {
				this._setOptionClasses(value);
			}

			this.options[key] = value;

			if (key === "disabled") {
				this._setOptionDisabled(value);
			}

			return this;
		},

		_setOptionClasses: function (value) {
			var classKey, elements, currentElements;

			for (classKey in value) {
				currentElements = this.classesElementLookup[classKey];
				if (value[classKey] === this.options.classes[classKey] ||
					!currentElements ||
					!currentElements.length) {
					continue;
				}

				// We are doing this to create a new jQuery object because the _removeClass() call
				// on the next line is going to destroy the reference to the current elements being
				// tracked. We need to save a copy of this collection so that we can add the new classes
				// below.
				elements = $(currentElements.get());
				this._removeClass(currentElements, classKey);

				// We don't use _addClass() here, because that uses this.options.classes
				// for generating the string of classes. We want to use the value passed in from
				// _setOption(), this is the new value of the classes option which was passed to
				// _setOption(). We pass this value directly to _classes().
				elements.addClass(this._classes({
					element: elements,
					keys: classKey,
					classes: value,
					add: true
				}));
			}
		},

		_setOptionDisabled: function (value) {
			this._toggleClass(this.widget(), this.widgetFullName + "-disabled", null, !!value);

			// If the widget is becoming disabled, then nothing is interactive
			if (value) {
				this._removeClass(this.hoverable, null, "ui-state-hover");
				this._removeClass(this.focusable, null, "ui-state-focus");
			}
		},

		enable: function () {
			return this._setOptions({ disabled: false });
		},

		disable: function () {
			return this._setOptions({ disabled: true });
		},

		_classes: function (options) {
			var full = [];
			var that = this;

			options = $.extend({
				element: this.element,
				classes: this.options.classes || {}
			}, options);

			function processClassString(classes, checkOption) {
				var current, i;
				for (i = 0; i < classes.length; i++) {
					current = that.classesElementLookup[classes[i]] || $();
					if (options.add) {
						current = $($.unique(current.get().concat(options.element.get())));
					} else {
						current = $(current.not(options.element).get());
					}
					that.classesElementLookup[classes[i]] = current;
					full.push(classes[i]);
					if (checkOption && options.classes[classes[i]]) {
						full.push(options.classes[classes[i]]);
					}
				}
			}

			this._on(options.element, {
				"remove": "_untrackClassesElement"
			});

			if (options.keys) {
				processClassString(options.keys.match(/\S+/g) || [], true);
			}
			if (options.extra) {
				processClassString(options.extra.match(/\S+/g) || []);
			}

			return full.join(" ");
		},

		_untrackClassesElement: function (event) {
			var that = this;
			$.each(that.classesElementLookup, function (key, value) {
				if ($.inArray(event.target, value) !== -1) {
					that.classesElementLookup[key] = $(value.not(event.target).get());
				}
			});
		},

		_removeClass: function (element, keys, extra) {
			return this._toggleClass(element, keys, extra, false);
		},

		_addClass: function (element, keys, extra) {
			return this._toggleClass(element, keys, extra, true);
		},

		_toggleClass: function (element, keys, extra, add) {
			add = (typeof add === "boolean") ? add : extra;
			var shift = (typeof element === "string" || element === null),
				options = {
					extra: shift ? keys : extra,
					keys: shift ? element : keys,
					element: shift ? this.element : element,
					add: add
				};
			options.element.toggleClass(this._classes(options), add);
			return this;
		},

		_on: function (suppressDisabledCheck, element, handlers) {
			var delegateElement;
			var 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 {
				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*(.*)$/);
				var eventName = match[1] + instance.eventNamespace;
				var selector = match[2];

				if (selector) {
					delegateElement.on(eventName, selector, handlerProxy);
				} else {
					element.on(eventName, handlerProxy);
				}
			});
		},

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

			// Clear the stack to avoid memory leaks (#10056)
			this.bindings = $(this.bindings.not(element).get());
			this.focusable = $(this.focusable.not(element).get());
			this.hoverable = $(this.hoverable.not(element).get());
		},

		_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) {
					this._addClass($(event.currentTarget), null, "ui-state-hover");
				},
				mouseleave: function (event) {
					this._removeClass($(event.currentTarget), null, "ui-state-hover");
				}
			});
		},

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

		_trigger: function (type, event, data) {
			var prop, orig;
			var 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;
			var 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();
				});
			}
		};
	});

	var widget = $.widget;

	/*!
	 * jQuery UI :data 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: :data Selector
	//>>group: Core
	//>>description: Selects elements which have data stored under the specified key.
	//>>docs: http://api.jqueryui.com/data-selector/

	var data = $.extend($.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]);
			}
	});

	/*!
	 * jQuery UI Disable Selection 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: disableSelection
	//>>group: Core
	//>>description: Disable selection of text content within the set of matched elements.
	//>>docs: http://api.jqueryui.com/disableSelection/

	// This file is deprecated

	var disableSelection = $.fn.extend({
		disableSelection: (function () {
			var eventType = "onselectstart" in document.createElement("div") ?
				"selectstart" :
				"mousedown";

			return function () {
				return this.on(eventType + ".ui-disableSelection", function (event) {
					event.preventDefault();
				});
			};
		})(),

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

	/*!
	 * jQuery UI Scroll Parent 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: scrollParent
	//>>group: Core
	//>>description: Get the closest ancestor element that is scrollable.
	//>>docs: http://api.jqueryui.com/scrollParent/

	var scrollParent = $.fn.scrollParent = function (includeHidden) {
		var position = this.css("position"),
			excludeStaticParent = position === "absolute",
			overflowRegex = includeHidden ? /(auto|scroll|hidden)/ : /(auto|scroll)/,
			scrollParent = this.parents().filter(function () {
				var parent = $(this);
				if (excludeStaticParent && parent.css("position") === "static") {
					return false;
				}
				return overflowRegex.test(parent.css("overflow") + parent.css("overflow-y") +
					parent.css("overflow-x"));
			}).eq(0);

		return position === "fixed" || !scrollParent.length ?
			$(this[0].ownerDocument || document) :
			scrollParent;
	};

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

	/*!
	 * jQuery UI Mouse 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Mouse
	//>>group: Widgets
	//>>description: Abstracts mouse-based interactions to assist in creating certain widgets.
	//>>docs: http://api.jqueryui.com/mouse/

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

	var widgetsMouse = $.widget("ui.mouse", {
		version: "1.12.1",
		options: {
			cancel: "input, textarea, button, select, option",
			distance: 1,
			delay: 0
		},
		_mouseInit: function () {
			var that = this;

			this.element
				.on("mousedown." + this.widgetName, function (event) {
					return that._mouseDown(event);
				})
				.on("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.off("." + this.widgetName);
			if (this._mouseMoveDelegate) {
				this.document
					.off("mousemove." + this.widgetName, this._mouseMoveDelegate)
					.off("mouseup." + this.widgetName, this._mouseUpDelegate);
			}
		},

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

			this._mouseMoved = false;

			// 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);
			};

			this.document
				.on("mousemove." + this.widgetName, this._mouseMoveDelegate)
				.on("mouseup." + this.widgetName, this._mouseUpDelegate);

			event.preventDefault();

			mouseHandled = true;
			return true;
		},

		_mouseMove: function (event) {
			// Only check for mouseups outside the document if you've moved inside the document
			// at least once. This prevents the firing of mouseup in the case of IE<9, which will
			// fire a mousemove event if content is placed under the cursor. See #7778
			// Support: IE <9
			if (this._mouseMoved) {
				// 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);

					// Iframe mouseup check - mouseup occurred in another document
				} else if (!event.which) {
					// Support: Safari <=8 - 9
					// Safari sets which to 0 if you press any of the following keys
					// during a drag (#14461)
					if (event.originalEvent.altKey || event.originalEvent.ctrlKey ||
						event.originalEvent.metaKey || event.originalEvent.shiftKey) {
						this.ignoreMissingWhich = true;
					} else if (!this.ignoreMissingWhich) {
						return this._mouseUp(event);
					}
				}
			}

			if (event.which || event.button) {
				this._mouseMoved = true;
			}

			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) {
			this.document
				.off("mousemove." + this.widgetName, this._mouseMoveDelegate)
				.off("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);
			}

			if (this._mouseDelayTimer) {
				clearTimeout(this._mouseDelayTimer);
				delete this._mouseDelayTimer;
			}

			this.ignoreMissingWhich = false;
			mouseHandled = false;
			event.preventDefault();
		},

		_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; }
	});

	// $.ui.plugin is deprecated. Use $.widget() extensions instead.
	var plugin = $.ui.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, allowDisconnected) {
			var i,
				set = instance.plugins[name];

			if (!set) {
				return;
			}

			if (!allowDisconnected && (!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);
				}
			}
		}
	};

	var safeActiveElement = $.ui.safeActiveElement = function (document) {
		var activeElement;

		// Support: IE 9 only
		// IE9 throws an "Unspecified error" accessing document.activeElement from an <iframe>
		try {
			activeElement = document.activeElement;
		} catch (error) {
			activeElement = document.body;
		}

		// Support: IE 9 - 11 only
		// IE may return null instead of an element
		// Interestingly, this only seems to occur when NOT in an iframe
		if (!activeElement) {
			activeElement = document.body;
		}

		// Support: IE 11 only
		// IE11 returns a seemingly empty object in some cases when accessing
		// document.activeElement from an <iframe>
		if (!activeElement.nodeName) {
			activeElement = document.body;
		}

		return activeElement;
	};

	var safeBlur = $.ui.safeBlur = function (element) {
		// Support: IE9 - 10 only
		// If the <body> is blurred, IE will switch windows, see #9420
		if (element && element.nodeName.toLowerCase() !== "body") {
			$(element).trigger("blur");
		}
	};

	/*!
	 * jQuery UI Draggable 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Draggable
	//>>group: Interactions
	//>>description: Enables dragging functionality for any element.
	//>>docs: http://api.jqueryui.com/draggable/
	//>>demos: http://jqueryui.com/draggable/
	//>>css.structure: ../../themes/base/draggable.css

	$.widget("ui.draggable", $.ui.mouse, {
		version: "1.12.1",
		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") {
				this._setPositionRelative();
			}
			if (this.options.addClasses) {
				this._addClass("ui-draggable");
			}
			this._setHandleClassName();

			this._mouseInit();
		},

		_setOption: function (key, value) {
			this._super(key, value);
			if (key === "handle") {
				this._removeHandleClassName();
				this._setHandleClassName();
			}
		},

		_destroy: function () {
			if ((this.helper || this.element).is(".ui-draggable-dragging")) {
				this.destroyOnClear = true;
				return;
			}
			this._removeHandleClassName();
			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;
			}

			this._blurActiveElement(event);

			this._blockFrames(o.iframeFix === true ? "iframe" : o.iframeFix);

			return true;
		},

		_blockFrames: function (selector) {
			this.iframeBlocks = this.document.find(selector).map(function () {
				var iframe = $(this);

				return $("<div>")
					.css("position", "absolute")
					.appendTo(iframe.parent())
					.outerWidth(iframe.outerWidth())
					.outerHeight(iframe.outerHeight())
					.offset(iframe.offset())[0];
			});
		},

		_unblockFrames: function () {
			if (this.iframeBlocks) {
				this.iframeBlocks.remove();
				delete this.iframeBlocks;
			}
		},

		_blurActiveElement: function (event) {
			var activeElement = $.ui.safeActiveElement(this.document[0]),
				target = $(event.target);

			// Don't blur if the event occurred on an element that is within
			// the currently focused element
			// See #10527, #12472
			if (target.closest(activeElement).length) {
				return;
			}

			// Blur any element that currently has focus, see #4261
			$.ui.safeBlur(activeElement);
		},

		_mouseStart: function (event) {
			var o = this.options;

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

			this._addClass(this.helper, "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(true);
			this.offsetParent = this.helper.offsetParent();
			this.hasFixedAncestor = this.helper.parents().filter(function () {
				return $(this).css("position") === "fixed";
			}).length > 0;

			//The element's absolute position on the page minus margins
			this.positionAbs = this.element.offset();
			this._refreshOffsets(event);

			//Generate the original position
			this.originalPosition = this.position = this._generatePosition(event, false);
			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);
			}

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

			// 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;
		},

		_refreshOffsets: function (event) {
			this.offset = {
				top: this.positionAbs.top - this.margins.top,
				left: this.positionAbs.left - this.margins.left,
				scroll: false,
				parent: this._getParentOffset(),
				relative: this._getRelativeOffset()
			};

			this.offset.click = {
				left: event.pageX - this.offset.left,
				top: event.pageY - this.offset.top
			};
		},

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

			//Compute the helpers position
			this.position = this._generatePosition(event, true);
			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(new $.Event("mouseup", event));
					return false;
				}
				this.position = ui.position;
			}

			this.helper[0].style.left = this.position.left + "px";
			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 ((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) {
			this._unblockFrames();

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

			// Only need to focus if the event occurred on the draggable itself, see #10527
			if (this.handleElement.is(event.target)) {
				// The interaction is over; whether or not the click resulted in a drag,
				// focus the element
				this.element.trigger("focus");
			}

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

		cancel: function () {
			if (this.helper.is(".ui-draggable-dragging")) {
				this._mouseUp(new $.Event("mouseup", { target: this.element[0] }));
			} else {
				this._clear();
			}

			return this;
		},

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

		_setHandleClassName: function () {
			this.handleElement = this.options.handle ?
				this.element.find(this.options.handle) : this.element;
			this._addClass(this.handleElement, "ui-draggable-handle");
		},

		_removeHandleClassName: function () {
			this._removeClass(this.handleElement, "ui-draggable-handle");
		},

		_createHelper: function (event) {
			var o = this.options,
				helperIsFunction = $.isFunction(o.helper),
				helper = helperIsFunction ?
					$(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));
			}

			// Http://bugs.jqueryui.com/ticket/9446
			// a helper function can return the original element
			// which wouldn't have been set to relative in _create
			if (helperIsFunction && helper[0] === this.element[0]) {
				this._setPositionRelative();
			}

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

			return helper;
		},

		_setPositionRelative: function () {
			if (!(/^(?:r|a|f)/).test(this.element.css("position"))) {
				this.element[0].style.position = "relative";
			}
		},

		_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;
			}
		},

		_isRootNode: function (element) {
			return (/(html|body)/i).test(element.tagName) || element === this.document[0];
		},

		_getParentOffset: function () {
			//Get the offsetParent and cache its position
			var po = this.offsetParent.offset(),
				document = this.document[0];

			// 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();
			}

			if (this._isRootNode(this.offsetParent[0])) {
				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") {
				return { top: 0, left: 0 };
			}

			var p = this.element.position(),
				scrollIsRootNode = this._isRootNode(this.scrollParent[0]);

			return {
				top: p.top - (parseInt(this.helper.css("top"), 10) || 0) +
					(!scrollIsRootNode ? this.scrollParent.scrollTop() : 0),
				left: p.left - (parseInt(this.helper.css("left"), 10) || 0) +
					(!scrollIsRootNode ? this.scrollParent.scrollLeft() : 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 isUserScrollable, c, ce,
				o = this.options,
				document = this.document[0];

			this.relativeContainer = null;

			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;
			}

			isUserScrollable = /(scroll|auto)/.test(c.css("overflow"));

			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),
				(isUserScrollable ? 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,
				(isUserScrollable ? 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.relativeContainer = c;
		},

		_convertPositionTo: function (d, pos) {
			if (!pos) {
				pos = this.position;
			}

			var mod = d === "absolute" ? 1 : -1,
				scrollIsRootNode = this._isRootNode(this.scrollParent[0]);

			return {
				top: (

					// The absolute mouse position
					pos.top +

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.top * mod +

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.top * mod -
					((this.cssPosition === "fixed" ?
						-this.offset.scroll.top :
						(scrollIsRootNode ? 0 : this.offset.scroll.top)) * mod)
				),
				left: (

					// The absolute mouse position
					pos.left +

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.left * mod +

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.left * mod -
					((this.cssPosition === "fixed" ?
						-this.offset.scroll.left :
						(scrollIsRootNode ? 0 : this.offset.scroll.left)) * mod)
				)
			};
		},

		_generatePosition: function (event, constrainPosition) {
			var containment, co, top, left,
				o = this.options,
				scrollIsRootNode = this._isRootNode(this.scrollParent[0]),
				pageX = event.pageX,
				pageY = event.pageY;

			// Cache the scroll
			if (!scrollIsRootNode || !this.offset.scroll) {
				this.offset.scroll = {
					top: this.scrollParent.scrollTop(),
					left: this.scrollParent.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 (constrainPosition) {
				if (this.containment) {
					if (this.relativeContainer) {
						co = this.relativeContainer.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;
				}

				if (o.axis === "y") {
					pageX = this.originalPageX;
				}

				if (o.axis === "x") {
					pageY = this.originalPageY;
				}
			}

			return {
				top: (

					// The absolute mouse position
					pageY -

					// Click offset (relative to the element)
					this.offset.click.top -

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.top -

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.top +
					(this.cssPosition === "fixed" ?
						-this.offset.scroll.top :
						(scrollIsRootNode ? 0 : this.offset.scroll.top))
				),
				left: (

					// The absolute mouse position
					pageX -

					// Click offset (relative to the element)
					this.offset.click.left -

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.left -

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.left +
					(this.cssPosition === "fixed" ?
						-this.offset.scroll.left :
						(scrollIsRootNode ? 0 : this.offset.scroll.left))
				)
			};
		},

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

		// From now on bulk stuff - mainly helpers

		_trigger: function (type, event, ui) {
			ui = ui || this._uiHash();
			$.ui.plugin.call(this, type, [event, ui, this], true);

			// Absolute position and offset (see #6884 ) have to be recalculated after plugins
			if (/^(drag|start|stop)/.test(type)) {
				this.positionAbs = this._convertPositionTo("absolute");
				ui.offset = this.positionAbs;
			}
			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, draggable) {
			var uiSortable = $.extend({}, ui, {
				item: draggable.element
			});

			draggable.sortables = [];
			$(draggable.options.connectToSortable).each(function () {
				var sortable = $(this).sortable("instance");

				if (sortable && !sortable.options.disabled) {
					draggable.sortables.push(sortable);

					// RefreshPositions is called at drag start to refresh the containerCache
					// which is used in drag. This ensures it's initialized and synchronized
					// with any changes that might have happened on the page since initialization.
					sortable.refreshPositions();
					sortable._trigger("activate", event, uiSortable);
				}
			});
		},
		stop: function (event, ui, draggable) {
			var uiSortable = $.extend({}, ui, {
				item: draggable.element
			});

			draggable.cancelHelperRemoval = false;

			$.each(draggable.sortables, function () {
				var sortable = this;

				if (sortable.isOver) {
					sortable.isOver = 0;

					// Allow this sortable to handle removing the helper
					draggable.cancelHelperRemoval = true;
					sortable.cancelHelperRemoval = false;

					// Use _storedCSS To restore properties in the sortable,
					// as this also handles revert (#9675) since the draggable
					// may have modified them in unexpected ways (#8809)
					sortable._storedCSS = {
						position: sortable.placeholder.css("position"),
						top: sortable.placeholder.css("top"),
						left: sortable.placeholder.css("left")
					};

					sortable._mouseStop(event);

					// Once drag has ended, the sortable should return to using
					// its original helper, not the shared helper from draggable
					sortable.options.helper = sortable.options._helper;
				} else {
					// Prevent this Sortable from removing the helper.
					// However, don't set the draggable to remove the helper
					// either as another connected Sortable may yet handle the removal.
					sortable.cancelHelperRemoval = true;

					sortable._trigger("deactivate", event, uiSortable);
				}
			});
		},
		drag: function (event, ui, draggable) {
			$.each(draggable.sortables, function () {
				var innermostIntersecting = false,
					sortable = this;

				// Copy over variables that sortable's _intersectsWith uses
				sortable.positionAbs = draggable.positionAbs;
				sortable.helperProportions = draggable.helperProportions;
				sortable.offset.click = draggable.offset.click;

				if (sortable._intersectsWith(sortable.containerCache)) {
					innermostIntersecting = true;

					$.each(draggable.sortables, function () {
						// Copy over variables that sortable's _intersectsWith uses
						this.positionAbs = draggable.positionAbs;
						this.helperProportions = draggable.helperProportions;
						this.offset.click = draggable.offset.click;

						if (this !== sortable &&
							this._intersectsWith(this.containerCache) &&
							$.contains(sortable.element[0], this.element[0])) {
							innermostIntersecting = false;
						}

						return innermostIntersecting;
					});
				}

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

						// Store draggable's parent in case we need to reappend to it later.
						draggable._parent = ui.helper.parent();

						sortable.currentItem = ui.helper
							.appendTo(sortable.element)
							.data("ui-sortable-item", true);

						// Store helper option to later restore it
						sortable.options._helper = sortable.options.helper;

						sortable.options.helper = function () {
							return ui.helper[0];
						};

						// Fire the start events of the sortable with our passed browser event,
						// and our own helper (so it doesn't create a new one)
						event.target = sortable.currentItem[0];
						sortable._mouseCapture(event, true);
						sortable._mouseStart(event, true, true);

						// Because the browser event is way off the new appended portlet,
						// modify necessary variables to reflect the changes
						sortable.offset.click.top = draggable.offset.click.top;
						sortable.offset.click.left = draggable.offset.click.left;
						sortable.offset.parent.left -= draggable.offset.parent.left -
							sortable.offset.parent.left;
						sortable.offset.parent.top -= draggable.offset.parent.top -
							sortable.offset.parent.top;

						draggable._trigger("toSortable", event);

						// Inform draggable that the helper is in a valid drop zone,
						// used solely in the revert option to handle "valid/invalid".
						draggable.dropped = sortable.element;

						// Need to refreshPositions of all sortables in the case that
						// adding to one sortable changes the location of the other sortables (#9675)
						$.each(draggable.sortables, function () {
							this.refreshPositions();
						});

						// Hack so receive/update callbacks work (mostly)
						draggable.currentItem = draggable.element;
						sortable.fromOutside = draggable;
					}

					if (sortable.currentItem) {
						sortable._mouseDrag(event);

						// Copy the sortable's position because the draggable's can potentially reflect
						// a relative position, while sortable is always absolute, which the dragged
						// element has now become. (#8809)
						ui.position = sortable.position;
					}
				} 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 (sortable.isOver) {
						sortable.isOver = 0;
						sortable.cancelHelperRemoval = true;

						// Calling sortable's mouseStop would trigger a revert,
						// so revert must be temporarily false until after mouseStop is called.
						sortable.options._revert = sortable.options.revert;
						sortable.options.revert = false;

						sortable._trigger("out", event, sortable._uiHash(sortable));
						sortable._mouseStop(event, true);

						// Restore sortable behaviors that were modfied
						// when the draggable entered the sortable area (#9481)
						sortable.options.revert = sortable.options._revert;
						sortable.options.helper = sortable.options._helper;

						if (sortable.placeholder) {
							sortable.placeholder.remove();
						}

						// Restore and recalculate the draggable's offset considering the sortable
						// may have modified them in unexpected ways. (#8809, #10669)
						ui.helper.appendTo(draggable._parent);
						draggable._refreshOffsets(event);
						ui.position = draggable._generatePosition(event, true);

						draggable._trigger("fromSortable", event);

						// Inform draggable that the helper is no longer in a valid drop zone
						draggable.dropped = false;

						// Need to refreshPositions of all sortables just in case removing
						// from one sortable changes the location of other sortables (#9675)
						$.each(draggable.sortables, function () {
							this.refreshPositions();
						});
					}
				}
			});
		}
	});

	$.ui.plugin.add("draggable", "cursor", {
		start: function (event, ui, instance) {
			var t = $("body"),
				o = instance.options;

			if (t.css("cursor")) {
				o._cursor = t.css("cursor");
			}
			t.css("cursor", o.cursor);
		},
		stop: function (event, ui, instance) {
			var o = instance.options;
			if (o._cursor) {
				$("body").css("cursor", o._cursor);
			}
		}
	});

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

	$.ui.plugin.add("draggable", "scroll", {
		start: function (event, ui, i) {
			if (!i.scrollParentNotHidden) {
				i.scrollParentNotHidden = i.helper.scrollParent(false);
			}

			if (i.scrollParentNotHidden[0] !== i.document[0] &&
				i.scrollParentNotHidden[0].tagName !== "HTML") {
				i.overflowOffset = i.scrollParentNotHidden.offset();
			}
		},
		drag: function (event, ui, i) {
			var o = i.options,
				scrolled = false,
				scrollParent = i.scrollParentNotHidden[0],
				document = i.document[0];

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

				if (!o.axis || o.axis !== "y") {
					if ((i.overflowOffset.left + scrollParent.offsetWidth) - event.pageX <
						o.scrollSensitivity) {
						scrollParent.scrollLeft = scrolled = scrollParent.scrollLeft + o.scrollSpeed;
					} else if (event.pageX - i.overflowOffset.left < o.scrollSensitivity) {
						scrollParent.scrollLeft = scrolled = scrollParent.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 (event, ui, i) {
			var 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, inst) {
			var ts, bs, ls, rs, l, r, t, b, i, first,
				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 - inst.margins.left;
				r = l + inst.snapElements[i].width;
				t = inst.snapElements[i].top - inst.margins.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;
					}
					if (bs) {
						ui.position.top = inst._convertPositionTo("relative", {
							top: b,
							left: 0
						}).top;
					}
					if (ls) {
						ui.position.left = inst._convertPositionTo("relative", {
							top: 0,
							left: l - inst.helperProportions.width
						}).left;
					}
					if (rs) {
						ui.position.left = inst._convertPositionTo("relative", {
							top: 0,
							left: r
						}).left;
					}
				}

				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;
					}
					if (bs) {
						ui.position.top = inst._convertPositionTo("relative", {
							top: b - inst.helperProportions.height,
							left: 0
						}).top;
					}
					if (ls) {
						ui.position.left = inst._convertPositionTo("relative", {
							top: 0,
							left: l
						}).left;
					}
					if (rs) {
						ui.position.left = inst._convertPositionTo("relative", {
							top: 0,
							left: r - inst.helperProportions.width
						}).left;
					}
				}

				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 (event, ui, instance) {
			var min,
				o = instance.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, instance) {
			var t = $(ui.helper),
				o = instance.options;

			if (t.css("zIndex")) {
				o._zIndex = t.css("zIndex");
			}
			t.css("zIndex", o.zIndex);
		},
		stop: function (event, ui, instance) {
			var o = instance.options;

			if (o._zIndex) {
				$(ui.helper).css("zIndex", o._zIndex);
			}
		}
	});

	var widgetsDraggable = $.ui.draggable;

	/*!
	 * jQuery UI Droppable 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Droppable
	//>>group: Interactions
	//>>description: Enables drop targets for draggable elements.
	//>>docs: http://api.jqueryui.com/droppable/
	//>>demos: http://jqueryui.com/droppable/

	$.widget("ui.droppable", {
		version: "1.12.1",
		widgetEventPrefix: "drop",
		options: {
			accept: "*",
			addClasses: true,
			greedy: 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
						};
				}
			};

			this._addToManager(o.scope);

			o.addClasses && this._addClass("ui-droppable");
		},

		_addToManager: function (scope) {
			// Add the reference and positions to the manager
			$.ui.ddmanager.droppables[scope] = $.ui.ddmanager.droppables[scope] || [];
			$.ui.ddmanager.droppables[scope].push(this);
		},

		_splice: function (drop) {
			var i = 0;
			for (; i < drop.length; i++) {
				if (drop[i] === this) {
					drop.splice(i, 1);
				}
			}
		},

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

			this._splice(drop);
		},

		_setOption: function (key, value) {
			if (key === "accept") {
				this.accept = $.isFunction(value) ? value : function (d) {
					return d.is(value);
				};
			} else if (key === "scope") {
				var drop = $.ui.ddmanager.droppables[this.options.scope];

				this._splice(drop);
				this._addToManager(value);
			}

			this._super(key, value);
		},

		_activate: function (event) {
			var draggable = $.ui.ddmanager.current;

			this._addActiveClass();
			if (draggable) {
				this._trigger("activate", event, this.ui(draggable));
			}
		},

		_deactivate: function (event) {
			var draggable = $.ui.ddmanager.current;

			this._removeActiveClass();
			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))) {
				this._addHoverClass();
				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))) {
				this._removeHoverClass();
				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 = $(this).droppable("instance");
					if (
						inst.options.greedy &&
						!inst.options.disabled &&
						inst.options.scope === draggable.options.scope &&
						inst.accept.call(
							inst.element[0], (draggable.currentItem || draggable.element)
						) &&
						intersect(
							draggable,
							$.extend(inst, { offset: inst.element.offset() }),
							inst.options.tolerance, event
						)
					) {
						childrenIntersection = true;
						return false;
					}
				});
			if (childrenIntersection) {
				return false;
			}

			if (this.accept.call(this.element[0],
				(draggable.currentItem || draggable.element))) {
				this._removeActiveClass();
				this._removeHoverClass();

				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
			};
		},

		// Extension points just to make backcompat sane and avoid duplicating logic
		// TODO: Remove in 1.13 along with call to it below
		_addHoverClass: function () {
			this._addClass("ui-droppable-hover");
		},

		_removeHoverClass: function () {
			this._removeClass("ui-droppable-hover");
		},

		_addActiveClass: function () {
			this._addClass("ui-droppable-active");
		},

		_removeActiveClass: function () {
			this._removeClass("ui-droppable-active");
		}
	});

	var intersect = $.ui.intersect = (function () {
		function isOverAxis(x, reference, size) {
			return (x >= reference) && (x < (reference + size));
		}

		return function (draggable, droppable, toleranceMode, event) {
			if (!droppable.offset) {
				return false;
			}

			var x1 = (draggable.positionAbs ||
				draggable.position.absolute).left + draggable.margins.left,
				y1 = (draggable.positionAbs ||
					draggable.position.absolute).top + draggable.margins.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":
					return isOverAxis(event.pageY, t, droppable.proportions().height) &&
						isOverAxis(event.pageX, 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 &&
					intersect(draggable, this, this.options.tolerance, event)) {
					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").on("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 = intersect(draggable, this, this.options.tolerance, event),
					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 $(this).droppable("instance").options.scope === scope;
					});

					if (parent.length) {
						parentInstance = $(parent[0]).droppable("instance");
						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").off("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);
			}
		}
	};

	// DEPRECATED
	// TODO: switch return back to widget declaration at top of file when this is removed
	if ($.uiBackCompat !== false) {
		// Backcompat for activeClass and hoverClass options
		$.widget("ui.droppable", $.ui.droppable, {
			options: {
				hoverClass: false,
				activeClass: false
			},
			_addActiveClass: function () {
				this._super();
				if (this.options.activeClass) {
					this.element.addClass(this.options.activeClass);
				}
			},
			_removeActiveClass: function () {
				this._super();
				if (this.options.activeClass) {
					this.element.removeClass(this.options.activeClass);
				}
			},
			_addHoverClass: function () {
				this._super();
				if (this.options.hoverClass) {
					this.element.addClass(this.options.hoverClass);
				}
			},
			_removeHoverClass: function () {
				this._super();
				if (this.options.hoverClass) {
					this.element.removeClass(this.options.hoverClass);
				}
			}
		});
	}

	var widgetsDroppable = $.ui.droppable;

	/*!
	 * jQuery UI Resizable 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Resizable
	//>>group: Interactions
	//>>description: Enables resize functionality for any element.
	//>>docs: http://api.jqueryui.com/resizable/
	//>>demos: http://jqueryui.com/resizable/
	//>>css.structure: ../../themes/base/core.css
	//>>css.structure: ../../themes/base/resizable.css
	//>>css.theme: ../../themes/base/theme.css

	$.widget("ui.resizable", $.ui.mouse, {
		version: "1.12.1",
		widgetEventPrefix: "resize",
		options: {
			alsoResize: false,
			animate: false,
			animateDuration: "slow",
			animateEasing: "swing",
			aspectRatio: false,
			autoHide: false,
			classes: {
				"ui-resizable-se": "ui-icon ui-icon-gripsmall-diagonal-se"
			},
			containment: false,
			ghost: false,
			grid: false,
			handles: "e,s,se",
			helper: false,
			maxHeight: null,
			maxWidth: null,
			minHeight: 10,
			minWidth: 10,

			// See #7960
			zIndex: 90,

			// Callbacks
			resize: null,
			start: null,
			stop: null
		},

		_num: function (value) {
			return parseFloat(value) || 0;
		},

		_isNumber: function (value) {
			return !isNaN(parseFloat(value));
		},

		_hasScroll: function (el, a) {
			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;
		},

		_create: function () {
			var margins,
				o = this.options,
				that = this;
			this._addClass("ui-resizable");

			$.extend(this, {
				_aspectRatio: !!(o.aspectRatio),
				aspectRatio: o.aspectRatio,
				originalElement: this.element,
				_proportionallyResizeElements: [],
				_helper: o.helper || o.ghost || o.animate ? o.helper || "ui-resizable-helper" : null
			});

			// Wrap the element if it cannot hold child nodes
			if (this.element[0].nodeName.match(/^(canvas|textarea|input|select|button|img)$/i)) {
				this.element.wrap(
					$("<div class='ui-wrapper' style='overflow: hidden;'></div>").css({
						position: this.element.css("position"),
						width: this.element.outerWidth(),
						height: this.element.outerHeight(),
						top: this.element.css("top"),
						left: this.element.css("left")
					})
				);

				this.element = this.element.parent().data(
					"ui-resizable", this.element.resizable("instance")
				);

				this.elementIsWrapper = true;

				margins = {
					marginTop: this.originalElement.css("marginTop"),
					marginRight: this.originalElement.css("marginRight"),
					marginBottom: this.originalElement.css("marginBottom"),
					marginLeft: this.originalElement.css("marginLeft")
				};

				this.element.css(margins);
				this.originalElement.css("margin", 0);

				// support: Safari
				// Prevent Safari textarea resize
				this.originalResizeStyle = this.originalElement.css("resize");
				this.originalElement.css("resize", "none");

				this._proportionallyResizeElements.push(this.originalElement.css({
					position: "static",
					zoom: 1,
					display: "block"
				}));

				// Support: IE9
				// avoid IE jump (hard set the margin)
				this.originalElement.css(margins);

				this._proportionallyResize();
			}

			this._setupHandles();

			if (o.autoHide) {
				$(this.element)
					.on("mouseenter", function () {
						if (o.disabled) {
							return;
						}
						that._removeClass("ui-resizable-autohide");
						that._handles.show();
					})
					.on("mouseleave", function () {
						if (o.disabled) {
							return;
						}
						if (!that.resizing) {
							that._addClass("ui-resizable-autohide");
							that._handles.hide();
						}
					});
			}

			this._mouseInit();
		},

		_destroy: function () {
			this._mouseDestroy();

			var wrapper,
				_destroy = function (exp) {
					$(exp)
						.removeData("resizable")
						.removeData("ui-resizable")
						.off(".resizable")
						.find(".ui-resizable-handle")
						.remove();
				};

			// TODO: Unwrap at same DOM position
			if (this.elementIsWrapper) {
				_destroy(this.element);
				wrapper = this.element;
				this.originalElement.css({
					position: wrapper.css("position"),
					width: wrapper.outerWidth(),
					height: wrapper.outerHeight(),
					top: wrapper.css("top"),
					left: wrapper.css("left")
				}).insertAfter(wrapper);
				wrapper.remove();
			}

			this.originalElement.css("resize", this.originalResizeStyle);
			_destroy(this.originalElement);

			return this;
		},

		_setOption: function (key, value) {
			this._super(key, value);

			switch (key) {
				case "handles":
					this._removeHandles();
					this._setupHandles();
					break;
				default:
					break;
			}
		},

		_setupHandles: function () {
			var o = this.options, handle, i, n, hname, axis, that = this;
			this.handles = o.handles ||
				(!$(".ui-resizable-handle", this.element).length ?
					"e,s,se" : {
						n: ".ui-resizable-n",
						e: ".ui-resizable-e",
						s: ".ui-resizable-s",
						w: ".ui-resizable-w",
						se: ".ui-resizable-se",
						sw: ".ui-resizable-sw",
						ne: ".ui-resizable-ne",
						nw: ".ui-resizable-nw"
					});

			this._handles = $();
			if (this.handles.constructor === String) {
				if (this.handles === "all") {
					this.handles = "n,e,s,w,se,sw,ne,nw";
				}

				n = this.handles.split(",");
				this.handles = {};

				for (i = 0; i < n.length; i++) {
					handle = $.trim(n[i]);
					hname = "ui-resizable-" + handle;
					axis = $("<div>");
					this._addClass(axis, "ui-resizable-handle " + hname);

					axis.css({ zIndex: o.zIndex });

					this.handles[handle] = ".ui-resizable-" + handle;
					this.element.append(axis);
				}
			}

			this._renderAxis = function (target) {
				var i, axis, padPos, padWrapper;

				target = target || this.element;

				for (i in this.handles) {
					if (this.handles[i].constructor === String) {
						this.handles[i] = this.element.children(this.handles[i]).first().show();
					} else if (this.handles[i].jquery || this.handles[i].nodeType) {
						this.handles[i] = $(this.handles[i]);
						this._on(this.handles[i], { "mousedown": that._mouseDown });
					}

					if (this.elementIsWrapper &&
						this.originalElement[0]
							.nodeName
							.match(/^(textarea|input|select|button)$/i)) {
						axis = $(this.handles[i], this.element);

						padWrapper = /sw|ne|nw|se|n|s/.test(i) ?
							axis.outerHeight() :
							axis.outerWidth();

						padPos = ["padding",
							/ne|nw|n/.test(i) ? "Top" :
								/se|sw|s/.test(i) ? "Bottom" :
									/^e$/.test(i) ? "Right" : "Left"].join("");

						target.css(padPos, padWrapper);

						this._proportionallyResize();
					}

					this._handles = this._handles.add(this.handles[i]);
				}
			};

			// TODO: make renderAxis a prototype function
			this._renderAxis(this.element);

			this._handles = this._handles.add(this.element.find(".ui-resizable-handle"));
			this._handles.disableSelection();

			this._handles.on("mouseover", function () {
				if (!that.resizing) {
					if (this.className) {
						axis = this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i);
					}
					that.axis = axis && axis[1] ? axis[1] : "se";
				}
			});

			if (o.autoHide) {
				this._handles.hide();
				this._addClass("ui-resizable-autohide");
			}
		},

		_removeHandles: function () {
			this._handles.remove();
		},

		_mouseCapture: function (event) {
			var i, handle,
				capture = false;

			for (i in this.handles) {
				handle = $(this.handles[i])[0];
				if (handle === event.target || $.contains(handle, event.target)) {
					capture = true;
				}
			}

			return !this.options.disabled && capture;
		},

		_mouseStart: function (event) {
			var curleft, curtop, cursor,
				o = this.options,
				el = this.element;

			this.resizing = true;

			this._renderProxy();

			curleft = this._num(this.helper.css("left"));
			curtop = this._num(this.helper.css("top"));

			if (o.containment) {
				curleft += $(o.containment).scrollLeft() || 0;
				curtop += $(o.containment).scrollTop() || 0;
			}

			this.offset = this.helper.offset();
			this.position = { left: curleft, top: curtop };

			this.size = this._helper ? {
				width: this.helper.width(),
				height: this.helper.height()
			} : {
					width: el.width(),
					height: el.height()
				};

			this.originalSize = this._helper ? {
				width: el.outerWidth(),
				height: el.outerHeight()
			} : {
					width: el.width(),
					height: el.height()
				};

			this.sizeDiff = {
				width: el.outerWidth() - el.width(),
				height: el.outerHeight() - el.height()
			};

			this.originalPosition = { left: curleft, top: curtop };
			this.originalMousePosition = { left: event.pageX, top: event.pageY };

			this.aspectRatio = (typeof o.aspectRatio === "number") ?
				o.aspectRatio :
				((this.originalSize.width / this.originalSize.height) || 1);

			cursor = $(".ui-resizable-" + this.axis).css("cursor");
			$("body").css("cursor", cursor === "auto" ? this.axis + "-resize" : cursor);

			this._addClass("ui-resizable-resizing");
			this._propagate("start", event);
			return true;
		},

		_mouseDrag: function (event) {
			var data, props,
				smp = this.originalMousePosition,
				a = this.axis,
				dx = (event.pageX - smp.left) || 0,
				dy = (event.pageY - smp.top) || 0,
				trigger = this._change[a];

			this._updatePrevProperties();

			if (!trigger) {
				return false;
			}

			data = trigger.apply(this, [event, dx, dy]);

			this._updateVirtualBoundaries(event.shiftKey);
			if (this._aspectRatio || event.shiftKey) {
				data = this._updateRatio(data, event);
			}

			data = this._respectSize(data, event);

			this._updateCache(data);

			this._propagate("resize", event);

			props = this._applyChanges();

			if (!this._helper && this._proportionallyResizeElements.length) {
				this._proportionallyResize();
			}

			if (!$.isEmptyObject(props)) {
				this._updatePrevProperties();
				this._trigger("resize", event, this.ui());
				this._applyChanges();
			}

			return false;
		},

		_mouseStop: function (event) {
			this.resizing = false;
			var pr, ista, soffseth, soffsetw, s, left, top,
				o = this.options, that = this;

			if (this._helper) {
				pr = this._proportionallyResizeElements;
				ista = pr.length && (/textarea/i).test(pr[0].nodeName);
				soffseth = ista && this._hasScroll(pr[0], "left") ? 0 : that.sizeDiff.height;
				soffsetw = ista ? 0 : that.sizeDiff.width;

				s = {
					width: (that.helper.width() - soffsetw),
					height: (that.helper.height() - soffseth)
				};
				left = (parseFloat(that.element.css("left")) +
					(that.position.left - that.originalPosition.left)) || null;
				top = (parseFloat(that.element.css("top")) +
					(that.position.top - that.originalPosition.top)) || null;

				if (!o.animate) {
					this.element.css($.extend(s, { top: top, left: left }));
				}

				that.helper.height(that.size.height);
				that.helper.width(that.size.width);

				if (this._helper && !o.animate) {
					this._proportionallyResize();
				}
			}

			$("body").css("cursor", "auto");

			this._removeClass("ui-resizable-resizing");

			this._propagate("stop", event);

			if (this._helper) {
				this.helper.remove();
			}

			return false;
		},

		_updatePrevProperties: function () {
			this.prevPosition = {
				top: this.position.top,
				left: this.position.left
			};
			this.prevSize = {
				width: this.size.width,
				height: this.size.height
			};
		},

		_applyChanges: function () {
			var props = {};

			if (this.position.top !== this.prevPosition.top) {
				props.top = this.position.top + "px";
			}
			if (this.position.left !== this.prevPosition.left) {
				props.left = this.position.left + "px";
			}
			if (this.size.width !== this.prevSize.width) {
				props.width = this.size.width + "px";
			}
			if (this.size.height !== this.prevSize.height) {
				props.height = this.size.height + "px";
			}

			this.helper.css(props);

			return props;
		},

		_updateVirtualBoundaries: function (forceAspectRatio) {
			var pMinWidth, pMaxWidth, pMinHeight, pMaxHeight, b,
				o = this.options;

			b = {
				minWidth: this._isNumber(o.minWidth) ? o.minWidth : 0,
				maxWidth: this._isNumber(o.maxWidth) ? o.maxWidth : Infinity,
				minHeight: this._isNumber(o.minHeight) ? o.minHeight : 0,
				maxHeight: this._isNumber(o.maxHeight) ? o.maxHeight : Infinity
			};

			if (this._aspectRatio || forceAspectRatio) {
				pMinWidth = b.minHeight * this.aspectRatio;
				pMinHeight = b.minWidth / this.aspectRatio;
				pMaxWidth = b.maxHeight * this.aspectRatio;
				pMaxHeight = b.maxWidth / this.aspectRatio;

				if (pMinWidth > b.minWidth) {
					b.minWidth = pMinWidth;
				}
				if (pMinHeight > b.minHeight) {
					b.minHeight = pMinHeight;
				}
				if (pMaxWidth < b.maxWidth) {
					b.maxWidth = pMaxWidth;
				}
				if (pMaxHeight < b.maxHeight) {
					b.maxHeight = pMaxHeight;
				}
			}
			this._vBoundaries = b;
		},

		_updateCache: function (data) {
			this.offset = this.helper.offset();
			if (this._isNumber(data.left)) {
				this.position.left = data.left;
			}
			if (this._isNumber(data.top)) {
				this.position.top = data.top;
			}
			if (this._isNumber(data.height)) {
				this.size.height = data.height;
			}
			if (this._isNumber(data.width)) {
				this.size.width = data.width;
			}
		},

		_updateRatio: function (data) {
			var cpos = this.position,
				csize = this.size,
				a = this.axis;

			if (this._isNumber(data.height)) {
				data.width = (data.height * this.aspectRatio);
			} else if (this._isNumber(data.width)) {
				data.height = (data.width / this.aspectRatio);
			}

			if (a === "sw") {
				data.left = cpos.left + (csize.width - data.width);
				data.top = null;
			}
			if (a === "nw") {
				data.top = cpos.top + (csize.height - data.height);
				data.left = cpos.left + (csize.width - data.width);
			}

			return data;
		},

		_respectSize: function (data) {
			var o = this._vBoundaries,
				a = this.axis,
				ismaxw = this._isNumber(data.width) && o.maxWidth && (o.maxWidth < data.width),
				ismaxh = this._isNumber(data.height) && o.maxHeight && (o.maxHeight < data.height),
				isminw = this._isNumber(data.width) && o.minWidth && (o.minWidth > data.width),
				isminh = this._isNumber(data.height) && o.minHeight && (o.minHeight > data.height),
				dw = this.originalPosition.left + this.originalSize.width,
				dh = this.originalPosition.top + this.originalSize.height,
				cw = /sw|nw|w/.test(a), ch = /nw|ne|n/.test(a);
			if (isminw) {
				data.width = o.minWidth;
			}
			if (isminh) {
				data.height = o.minHeight;
			}
			if (ismaxw) {
				data.width = o.maxWidth;
			}
			if (ismaxh) {
				data.height = o.maxHeight;
			}

			if (isminw && cw) {
				data.left = dw - o.minWidth;
			}
			if (ismaxw && cw) {
				data.left = dw - o.maxWidth;
			}
			if (isminh && ch) {
				data.top = dh - o.minHeight;
			}
			if (ismaxh && ch) {
				data.top = dh - o.maxHeight;
			}

			// Fixing jump error on top/left - bug #2330
			if (!data.width && !data.height && !data.left && data.top) {
				data.top = null;
			} else if (!data.width && !data.height && !data.top && data.left) {
				data.left = null;
			}

			return data;
		},

		_getPaddingPlusBorderDimensions: function (element) {
			var i = 0,
				widths = [],
				borders = [
					element.css("borderTopWidth"),
					element.css("borderRightWidth"),
					element.css("borderBottomWidth"),
					element.css("borderLeftWidth")
				],
				paddings = [
					element.css("paddingTop"),
					element.css("paddingRight"),
					element.css("paddingBottom"),
					element.css("paddingLeft")
				];

			for (; i < 4; i++) {
				widths[i] = (parseFloat(borders[i]) || 0);
				widths[i] += (parseFloat(paddings[i]) || 0);
			}

			return {
				height: widths[0] + widths[2],
				width: widths[1] + widths[3]
			};
		},

		_proportionallyResize: function () {
			if (!this._proportionallyResizeElements.length) {
				return;
			}

			var prel,
				i = 0,
				element = this.helper || this.element;

			for (; i < this._proportionallyResizeElements.length; i++) {
				prel = this._proportionallyResizeElements[i];

				// TODO: Seems like a bug to cache this.outerDimensions
				// considering that we are in a loop.
				if (!this.outerDimensions) {
					this.outerDimensions = this._getPaddingPlusBorderDimensions(prel);
				}

				prel.css({
					height: (element.height() - this.outerDimensions.height) || 0,
					width: (element.width() - this.outerDimensions.width) || 0
				});
			}
		},

		_renderProxy: function () {
			var el = this.element, o = this.options;
			this.elementOffset = el.offset();

			if (this._helper) {
				this.helper = this.helper || $("<div style='overflow:hidden;'></div>");

				this._addClass(this.helper, this._helper);
				this.helper.css({
					width: this.element.outerWidth(),
					height: this.element.outerHeight(),
					position: "absolute",
					left: this.elementOffset.left + "px",
					top: this.elementOffset.top + "px",
					zIndex: ++o.zIndex //TODO: Don't modify option
				});

				this.helper
					.appendTo("body")
					.disableSelection();
			} else {
				this.helper = this.element;
			}
		},

		_change: {
			e: function (event, dx) {
				return { width: this.originalSize.width + dx };
			},
			w: function (event, dx) {
				var cs = this.originalSize, sp = this.originalPosition;
				return { left: sp.left + dx, width: cs.width - dx };
			},
			n: function (event, dx, dy) {
				var cs = this.originalSize, sp = this.originalPosition;
				return { top: sp.top + dy, height: cs.height - dy };
			},
			s: function (event, dx, dy) {
				return { height: this.originalSize.height + dy };
			},
			se: function (event, dx, dy) {
				return $.extend(this._change.s.apply(this, arguments),
					this._change.e.apply(this, [event, dx, dy]));
			},
			sw: function (event, dx, dy) {
				return $.extend(this._change.s.apply(this, arguments),
					this._change.w.apply(this, [event, dx, dy]));
			},
			ne: function (event, dx, dy) {
				return $.extend(this._change.n.apply(this, arguments),
					this._change.e.apply(this, [event, dx, dy]));
			},
			nw: function (event, dx, dy) {
				return $.extend(this._change.n.apply(this, arguments),
					this._change.w.apply(this, [event, dx, dy]));
			}
		},

		_propagate: function (n, event) {
			$.ui.plugin.call(this, n, [event, this.ui()]);
			(n !== "resize" && this._trigger(n, event, this.ui()));
		},

		plugins: {},

		ui: function () {
			return {
				originalElement: this.originalElement,
				element: this.element,
				helper: this.helper,
				position: this.position,
				size: this.size,
				originalSize: this.originalSize,
				originalPosition: this.originalPosition
			};
		}
	});

	/*
	 * Resizable Extensions
	 */

	$.ui.plugin.add("resizable", "animate", {
		stop: function (event) {
			var that = $(this).resizable("instance"),
				o = that.options,
				pr = that._proportionallyResizeElements,
				ista = pr.length && (/textarea/i).test(pr[0].nodeName),
				soffseth = ista && that._hasScroll(pr[0], "left") ? 0 : that.sizeDiff.height,
				soffsetw = ista ? 0 : that.sizeDiff.width,
				style = {
					width: (that.size.width - soffsetw),
					height: (that.size.height - soffseth)
				},
				left = (parseFloat(that.element.css("left")) +
					(that.position.left - that.originalPosition.left)) || null,
				top = (parseFloat(that.element.css("top")) +
					(that.position.top - that.originalPosition.top)) || null;

			that.element.animate(
				$.extend(style, top && left ? { top: top, left: left } : {}), {
				duration: o.animateDuration,
				easing: o.animateEasing,
				step: function () {
					var data = {
						width: parseFloat(that.element.css("width")),
						height: parseFloat(that.element.css("height")),
						top: parseFloat(that.element.css("top")),
						left: parseFloat(that.element.css("left"))
					};

					if (pr && pr.length) {
						$(pr[0]).css({ width: data.width, height: data.height });
					}

					// Propagating resize, and updating values for each animation step
					that._updateCache(data);
					that._propagate("resize", event);
				}
			}
			);
		}
	});

	$.ui.plugin.add("resizable", "containment", {
		start: function () {
			var element, p, co, ch, cw, width, height,
				that = $(this).resizable("instance"),
				o = that.options,
				el = that.element,
				oc = o.containment,
				ce = (oc instanceof $) ?
					oc.get(0) :
					(/parent/.test(oc)) ? el.parent().get(0) : oc;

			if (!ce) {
				return;
			}

			that.containerElement = $(ce);

			if (/document/.test(oc) || oc === document) {
				that.containerOffset = {
					left: 0,
					top: 0
				};
				that.containerPosition = {
					left: 0,
					top: 0
				};

				that.parentData = {
					element: $(document),
					left: 0,
					top: 0,
					width: $(document).width(),
					height: $(document).height() || document.body.parentNode.scrollHeight
				};
			} else {
				element = $(ce);
				p = [];
				$(["Top", "Right", "Left", "Bottom"]).each(function (i, name) {
					p[i] = that._num(element.css("padding" + name));
				});

				that.containerOffset = element.offset();
				that.containerPosition = element.position();
				that.containerSize = {
					height: (element.innerHeight() - p[3]),
					width: (element.innerWidth() - p[1])
				};

				co = that.containerOffset;
				ch = that.containerSize.height;
				cw = that.containerSize.width;
				width = (that._hasScroll(ce, "left") ? ce.scrollWidth : cw);
				height = (that._hasScroll(ce) ? ce.scrollHeight : ch);

				that.parentData = {
					element: ce,
					left: co.left,
					top: co.top,
					width: width,
					height: height
				};
			}
		},

		resize: function (event) {
			var woset, hoset, isParent, isOffsetRelative,
				that = $(this).resizable("instance"),
				o = that.options,
				co = that.containerOffset,
				cp = that.position,
				pRatio = that._aspectRatio || event.shiftKey,
				cop = {
					top: 0,
					left: 0
				},
				ce = that.containerElement,
				continueResize = true;

			if (ce[0] !== document && (/static/).test(ce.css("position"))) {
				cop = co;
			}

			if (cp.left < (that._helper ? co.left : 0)) {
				that.size.width = that.size.width +
					(that._helper ?
						(that.position.left - co.left) :
						(that.position.left - cop.left));

				if (pRatio) {
					that.size.height = that.size.width / that.aspectRatio;
					continueResize = false;
				}
				that.position.left = o.helper ? co.left : 0;
			}

			if (cp.top < (that._helper ? co.top : 0)) {
				that.size.height = that.size.height +
					(that._helper ?
						(that.position.top - co.top) :
						that.position.top);

				if (pRatio) {
					that.size.width = that.size.height * that.aspectRatio;
					continueResize = false;
				}
				that.position.top = that._helper ? co.top : 0;
			}

			isParent = that.containerElement.get(0) === that.element.parent().get(0);
			isOffsetRelative = /relative|absolute/.test(that.containerElement.css("position"));

			if (isParent && isOffsetRelative) {
				that.offset.left = that.parentData.left + that.position.left;
				that.offset.top = that.parentData.top + that.position.top;
			} else {
				that.offset.left = that.element.offset().left;
				that.offset.top = that.element.offset().top;
			}

			woset = Math.abs(that.sizeDiff.width +
				(that._helper ?
					that.offset.left - cop.left :
					(that.offset.left - co.left)));

			hoset = Math.abs(that.sizeDiff.height +
				(that._helper ?
					that.offset.top - cop.top :
					(that.offset.top - co.top)));

			if (woset + that.size.width >= that.parentData.width) {
				that.size.width = that.parentData.width - woset;
				if (pRatio) {
					that.size.height = that.size.width / that.aspectRatio;
					continueResize = false;
				}
			}

			if (hoset + that.size.height >= that.parentData.height) {
				that.size.height = that.parentData.height - hoset;
				if (pRatio) {
					that.size.width = that.size.height * that.aspectRatio;
					continueResize = false;
				}
			}

			if (!continueResize) {
				that.position.left = that.prevPosition.left;
				that.position.top = that.prevPosition.top;
				that.size.width = that.prevSize.width;
				that.size.height = that.prevSize.height;
			}
		},

		stop: function () {
			var that = $(this).resizable("instance"),
				o = that.options,
				co = that.containerOffset,
				cop = that.containerPosition,
				ce = that.containerElement,
				helper = $(that.helper),
				ho = helper.offset(),
				w = helper.outerWidth() - that.sizeDiff.width,
				h = helper.outerHeight() - that.sizeDiff.height;

			if (that._helper && !o.animate && (/relative/).test(ce.css("position"))) {
				$(this).css({
					left: ho.left - cop.left - co.left,
					width: w,
					height: h
				});
			}

			if (that._helper && !o.animate && (/static/).test(ce.css("position"))) {
				$(this).css({
					left: ho.left - cop.left - co.left,
					width: w,
					height: h
				});
			}
		}
	});

	$.ui.plugin.add("resizable", "alsoResize", {
		start: function () {
			var that = $(this).resizable("instance"),
				o = that.options;

			$(o.alsoResize).each(function () {
				var el = $(this);
				el.data("ui-resizable-alsoresize", {
					width: parseFloat(el.width()), height: parseFloat(el.height()),
					left: parseFloat(el.css("left")), top: parseFloat(el.css("top"))
				});
			});
		},

		resize: function (event, ui) {
			var that = $(this).resizable("instance"),
				o = that.options,
				os = that.originalSize,
				op = that.originalPosition,
				delta = {
					height: (that.size.height - os.height) || 0,
					width: (that.size.width - os.width) || 0,
					top: (that.position.top - op.top) || 0,
					left: (that.position.left - op.left) || 0
				};

			$(o.alsoResize).each(function () {
				var el = $(this), start = $(this).data("ui-resizable-alsoresize"), style = {},
					css = el.parents(ui.originalElement[0]).length ?
						["width", "height"] :
						["width", "height", "top", "left"];

				$.each(css, function (i, prop) {
					var sum = (start[prop] || 0) + (delta[prop] || 0);
					if (sum && sum >= 0) {
						style[prop] = sum || null;
					}
				});

				el.css(style);
			});
		},

		stop: function () {
			$(this).removeData("ui-resizable-alsoresize");
		}
	});

	$.ui.plugin.add("resizable", "ghost", {
		start: function () {
			var that = $(this).resizable("instance"), cs = that.size;

			that.ghost = that.originalElement.clone();
			that.ghost.css({
				opacity: 0.25,
				display: "block",
				position: "relative",
				height: cs.height,
				width: cs.width,
				margin: 0,
				left: 0,
				top: 0
			});

			that._addClass(that.ghost, "ui-resizable-ghost");

			// DEPRECATED
			// TODO: remove after 1.12
			if ($.uiBackCompat !== false && typeof that.options.ghost === "string") {
				// Ghost option
				that.ghost.addClass(this.options.ghost);
			}

			that.ghost.appendTo(that.helper);
		},

		resize: function () {
			var that = $(this).resizable("instance");
			if (that.ghost) {
				that.ghost.css({
					position: "relative",
					height: that.size.height,
					width: that.size.width
				});
			}
		},

		stop: function () {
			var that = $(this).resizable("instance");
			if (that.ghost && that.helper) {
				that.helper.get(0).removeChild(that.ghost.get(0));
			}
		}
	});

	$.ui.plugin.add("resizable", "grid", {
		resize: function () {
			var outerDimensions,
				that = $(this).resizable("instance"),
				o = that.options,
				cs = that.size,
				os = that.originalSize,
				op = that.originalPosition,
				a = that.axis,
				grid = typeof o.grid === "number" ? [o.grid, o.grid] : o.grid,
				gridX = (grid[0] || 1),
				gridY = (grid[1] || 1),
				ox = Math.round((cs.width - os.width) / gridX) * gridX,
				oy = Math.round((cs.height - os.height) / gridY) * gridY,
				newWidth = os.width + ox,
				newHeight = os.height + oy,
				isMaxWidth = o.maxWidth && (o.maxWidth < newWidth),
				isMaxHeight = o.maxHeight && (o.maxHeight < newHeight),
				isMinWidth = o.minWidth && (o.minWidth > newWidth),
				isMinHeight = o.minHeight && (o.minHeight > newHeight);

			o.grid = grid;

			if (isMinWidth) {
				newWidth += gridX;
			}
			if (isMinHeight) {
				newHeight += gridY;
			}
			if (isMaxWidth) {
				newWidth -= gridX;
			}
			if (isMaxHeight) {
				newHeight -= gridY;
			}

			if (/^(se|s|e)$/.test(a)) {
				that.size.width = newWidth;
				that.size.height = newHeight;
			} else if (/^(ne)$/.test(a)) {
				that.size.width = newWidth;
				that.size.height = newHeight;
				that.position.top = op.top - oy;
			} else if (/^(sw)$/.test(a)) {
				that.size.width = newWidth;
				that.size.height = newHeight;
				that.position.left = op.left - ox;
			} else {
				if (newHeight - gridY <= 0 || newWidth - gridX <= 0) {
					outerDimensions = that._getPaddingPlusBorderDimensions(this);
				}

				if (newHeight - gridY > 0) {
					that.size.height = newHeight;
					that.position.top = op.top - oy;
				} else {
					newHeight = gridY - outerDimensions.height;
					that.size.height = newHeight;
					that.position.top = op.top + os.height - newHeight;
				}
				if (newWidth - gridX > 0) {
					that.size.width = newWidth;
					that.position.left = op.left - ox;
				} else {
					newWidth = gridX - outerDimensions.width;
					that.size.width = newWidth;
					that.position.left = op.left + os.width - newWidth;
				}
			}
		}
	});

	var widgetsResizable = $.ui.resizable;

	/*!
	 * jQuery UI Selectable 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Selectable
	//>>group: Interactions
	//>>description: Allows groups of elements to be selected with the mouse.
	//>>docs: http://api.jqueryui.com/selectable/
	//>>demos: http://jqueryui.com/selectable/
	//>>css.structure: ../../themes/base/selectable.css

	var widgetsSelectable = $.widget("ui.selectable", $.ui.mouse, {
		version: "1.12.1",
		options: {
			appendTo: "body",
			autoRefresh: true,
			distance: 0,
			filter: "*",
			tolerance: "touch",

			// Callbacks
			selected: null,
			selecting: null,
			start: null,
			stop: null,
			unselected: null,
			unselecting: null
		},
		_create: function () {
			var that = this;

			this._addClass("ui-selectable");

			this.dragged = false;

			// Cache selectee children based on filter
			this.refresh = function () {
				that.elementPos = $(that.element[0]).offset();
				that.selectees = $(that.options.filter, that.element[0]);
				that._addClass(that.selectees, "ui-selectee");
				that.selectees.each(function () {
					var $this = $(this),
						selecteeOffset = $this.offset(),
						pos = {
							left: selecteeOffset.left - that.elementPos.left,
							top: selecteeOffset.top - that.elementPos.top
						};
					$.data(this, "selectable-item", {
						element: this,
						$element: $this,
						left: pos.left,
						top: pos.top,
						right: pos.left + $this.outerWidth(),
						bottom: pos.top + $this.outerHeight(),
						startselected: false,
						selected: $this.hasClass("ui-selected"),
						selecting: $this.hasClass("ui-selecting"),
						unselecting: $this.hasClass("ui-unselecting")
					});
				});
			};
			this.refresh();

			this._mouseInit();

			this.helper = $("<div>");
			this._addClass(this.helper, "ui-selectable-helper");
		},

		_destroy: function () {
			this.selectees.removeData("selectable-item");
			this._mouseDestroy();
		},

		_mouseStart: function (event) {
			var that = this,
				options = this.options;

			this.opos = [event.pageX, event.pageY];
			this.elementPos = $(this.element[0]).offset();

			if (this.options.disabled) {
				return;
			}

			this.selectees = $(options.filter, this.element[0]);

			this._trigger("start", event);

			$(options.appendTo).append(this.helper);

			// position helper (lasso)
			this.helper.css({
				"left": event.pageX,
				"top": event.pageY,
				"width": 0,
				"height": 0
			});

			if (options.autoRefresh) {
				this.refresh();
			}

			this.selectees.filter(".ui-selected").each(function () {
				var selectee = $.data(this, "selectable-item");
				selectee.startselected = true;
				if (!event.metaKey && !event.ctrlKey) {
					that._removeClass(selectee.$element, "ui-selected");
					selectee.selected = false;
					that._addClass(selectee.$element, "ui-unselecting");
					selectee.unselecting = true;

					// selectable UNSELECTING callback
					that._trigger("unselecting", event, {
						unselecting: selectee.element
					});
				}
			});

			$(event.target).parents().addBack().each(function () {
				var doSelect,
					selectee = $.data(this, "selectable-item");
				if (selectee) {
					doSelect = (!event.metaKey && !event.ctrlKey) ||
						!selectee.$element.hasClass("ui-selected");
					that._removeClass(selectee.$element, doSelect ? "ui-unselecting" : "ui-selected")
						._addClass(selectee.$element, doSelect ? "ui-selecting" : "ui-unselecting");
					selectee.unselecting = !doSelect;
					selectee.selecting = doSelect;
					selectee.selected = doSelect;

					// selectable (UN)SELECTING callback
					if (doSelect) {
						that._trigger("selecting", event, {
							selecting: selectee.element
						});
					} else {
						that._trigger("unselecting", event, {
							unselecting: selectee.element
						});
					}
					return false;
				}
			});
		},

		_mouseDrag: function (event) {
			this.dragged = true;

			if (this.options.disabled) {
				return;
			}

			var tmp,
				that = this,
				options = this.options,
				x1 = this.opos[0],
				y1 = this.opos[1],
				x2 = event.pageX,
				y2 = event.pageY;

			if (x1 > x2) { tmp = x2; x2 = x1; x1 = tmp; }
			if (y1 > y2) { tmp = y2; y2 = y1; y1 = tmp; }
			this.helper.css({ left: x1, top: y1, width: x2 - x1, height: y2 - y1 });

			this.selectees.each(function () {
				var selectee = $.data(this, "selectable-item"),
					hit = false,
					offset = {};

				//prevent helper from being selected if appendTo: selectable
				if (!selectee || selectee.element === that.element[0]) {
					return;
				}

				offset.left = selectee.left + that.elementPos.left;
				offset.right = selectee.right + that.elementPos.left;
				offset.top = selectee.top + that.elementPos.top;
				offset.bottom = selectee.bottom + that.elementPos.top;

				if (options.tolerance === "touch") {
					hit = (!(offset.left > x2 || offset.right < x1 || offset.top > y2 ||
						offset.bottom < y1));
				} else if (options.tolerance === "fit") {
					hit = (offset.left > x1 && offset.right < x2 && offset.top > y1 &&
						offset.bottom < y2);
				}

				if (hit) {
					// SELECT
					if (selectee.selected) {
						that._removeClass(selectee.$element, "ui-selected");
						selectee.selected = false;
					}
					if (selectee.unselecting) {
						that._removeClass(selectee.$element, "ui-unselecting");
						selectee.unselecting = false;
					}
					if (!selectee.selecting) {
						that._addClass(selectee.$element, "ui-selecting");
						selectee.selecting = true;

						// selectable SELECTING callback
						that._trigger("selecting", event, {
							selecting: selectee.element
						});
					}
				} else {
					// UNSELECT
					if (selectee.selecting) {
						if ((event.metaKey || event.ctrlKey) && selectee.startselected) {
							that._removeClass(selectee.$element, "ui-selecting");
							selectee.selecting = false;
							that._addClass(selectee.$element, "ui-selected");
							selectee.selected = true;
						} else {
							that._removeClass(selectee.$element, "ui-selecting");
							selectee.selecting = false;
							if (selectee.startselected) {
								that._addClass(selectee.$element, "ui-unselecting");
								selectee.unselecting = true;
							}

							// selectable UNSELECTING callback
							that._trigger("unselecting", event, {
								unselecting: selectee.element
							});
						}
					}
					if (selectee.selected) {
						if (!event.metaKey && !event.ctrlKey && !selectee.startselected) {
							that._removeClass(selectee.$element, "ui-selected");
							selectee.selected = false;

							that._addClass(selectee.$element, "ui-unselecting");
							selectee.unselecting = true;

							// selectable UNSELECTING callback
							that._trigger("unselecting", event, {
								unselecting: selectee.element
							});
						}
					}
				}
			});

			return false;
		},

		_mouseStop: function (event) {
			var that = this;

			this.dragged = false;

			$(".ui-unselecting", this.element[0]).each(function () {
				var selectee = $.data(this, "selectable-item");
				that._removeClass(selectee.$element, "ui-unselecting");
				selectee.unselecting = false;
				selectee.startselected = false;
				that._trigger("unselected", event, {
					unselected: selectee.element
				});
			});
			$(".ui-selecting", this.element[0]).each(function () {
				var selectee = $.data(this, "selectable-item");
				that._removeClass(selectee.$element, "ui-selecting")
					._addClass(selectee.$element, "ui-selected");
				selectee.selecting = false;
				selectee.selected = true;
				selectee.startselected = true;
				that._trigger("selected", event, {
					selected: selectee.element
				});
			});
			this._trigger("stop", event);

			this.helper.remove();

			return false;
		}
	});

	/*!
	 * jQuery UI Sortable 1.12.1
	 * http://jqueryui.com
	 *
	 * Copyright jQuery Foundation and other contributors
	 * Released under the MIT license.
	 * http://jquery.org/license
	 */

	//>>label: Sortable
	//>>group: Interactions
	//>>description: Enables items in a list to be sorted using the mouse.
	//>>docs: http://api.jqueryui.com/sortable/
	//>>demos: http://jqueryui.com/sortable/
	//>>css.structure: ../../themes/base/sortable.css

	var widgetsSortable = $.widget("ui.sortable", $.ui.mouse, {
		version: "1.12.1",
		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
		},

		_isOverAxis: function (x, reference, size) {
			return (x >= reference) && (x < (reference + size));
		},

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

		_create: function () {
			this.containerCache = {};
			this._addClass("ui-sortable");

			//Get the items
			this.refresh();

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

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

			this._setHandleClassName();

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

		_setOption: function (key, value) {
			this._super(key, value);

			if (key === "handle") {
				this._setHandleClassName();
			}
		},

		_setHandleClassName: function () {
			var that = this;
			this._removeClass(this.element.find(".ui-sortable-handle"), "ui-sortable-handle");
			$.each(this.items, function () {
				that._addClass(
					this.instance.options.handle ?
						this.item.find(this.instance.options.handle) :
						this.item,
					"ui-sortable-handle"
				);
			});
		},

		_destroy: function () {
			this._mouseDestroy();

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

			return this;
		},

		_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(),

				// This is a relative to absolute position minus the actual position calculation -
				// only used for relative positioned helper
				relative: this._getRelativeOffset()
			});

			// 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] !== this.document[0] &&
				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._addClass(this.helper, "ui-sortable-helper");

			// Execute the drag once - this causes the helper not to be visiblebefore getting its
			// correct position
			this._mouseDrag(event);
			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] !== this.document[0] &&
					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 - this.document.scrollTop() < o.scrollSensitivity) {
						scrolled = this.document.scrollTop(this.document.scrollTop() - o.scrollSpeed);
					} else if (this.window.height() - (event.pageY - this.document.scrollTop()) <
						o.scrollSensitivity) {
						scrolled = this.document.scrollTop(this.document.scrollTop() + o.scrollSpeed);
					}

					if (event.pageX - this.document.scrollLeft() < o.scrollSensitivity) {
						scrolled = this.document.scrollLeft(
							this.document.scrollLeft() - o.scrollSpeed
						);
					} else if (this.window.width() - (event.pageX - this.document.scrollLeft()) <
						o.scrollSensitivity) {
						scrolled = this.document.scrollLeft(
							this.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 between 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] === this.document[0].body ?
							0 :
							this.offsetParent[0].scrollLeft
						);
				}
				if (!axis || axis === "y") {
					animation.top = cur.top - this.offset.parent.top - this.margins.top +
						(this.offsetParent[0] === this.document[0].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(new $.Event("mouseup", { target: null }));

				if (this.options.helper === "original") {
					this.currentItem.css(this._storedCSS);
					this._removeClass(this.currentItem, "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 verticalDirection, horizontalDirection,
				isOverElementHeight = (this.options.axis === "x") ||
					this._isOverAxis(
						this.positionAbs.top + this.offset.click.top, item.top, item.height),
				isOverElementWidth = (this.options.axis === "y") ||
					this._isOverAxis(
						this.positionAbs.left + this.offset.click.left, item.left, item.width),
				isOverElement = isOverElementHeight && isOverElementWidth;

			if (!isOverElement) {
				return false;
			}

			verticalDirection = this._getDragVerticalDirection();
			horizontalDirection = this._getDragHorizontalDirection();

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

		_intersectsWithSides: function (item) {
			var isOverBottomHalf = this._isOverAxis(this.positionAbs.top +
				this.offset.click.top, item.top + (item.height / 2), item.height),
				isOverRightHalf = this._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._setHandleClassName();
			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], this.document[0]);
					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();

			//Shouldn't be run the first time through due to massive slow-down
			if (connectWith && this.ready) {
				for (i = connectWith.length - 1; i >= 0; i--) {
					cur = $(connectWith[i], this.document[0]);
					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]);

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

					items.push({
						item: item,
						instance: targetData,
						width: 0, height: 0,
						left: 0, top: 0
					});
				}
			}
		},

		refreshPositions: function (fast) {
			// Determine whether items are being displayed horizontally
			this.floating = this.items.length ?
				this.options.axis === "x" || this._isFloating(this.items[0].item) :
				false;

			//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]);

						that._addClass(element, "ui-sortable-placeholder",
							className || that.currentItem[0].className)
							._removeClass(element, "ui-sortable-helper");

						if (nodeName === "tbody") {
							that._createTrPlaceholder(
								that.currentItem.find("tr").eq(0),
								$("<tr>", that.document[0]).appendTo(element)
							);
						} else if (nodeName === "tr") {
							that._createTrPlaceholder(that.currentItem, 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);
		},

		_createTrPlaceholder: function (sourceTr, targetTr) {
			var that = this;

			sourceTr.children().each(function () {
				$("<td>&#160;</td>", that.document[0])
					.attr("colspan", $(this).attr("colspan") || 1)
					.appendTo(targetTr);
			});
		},

		_contactContainers: function (event) {
			var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, cur, nearBottom,
				floating, axis,
				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 || this._isFloating(this.currentItem);
				posProperty = floating ? "left" : "top";
				sizeProperty = floating ? "width" : "height";
				axis = floating ? "pageX" : "pageY";

				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;
					}

					cur = this.items[j].item.offset()[posProperty];
					nearBottom = false;
					if (event[axis] - cur > this.items[j][sizeProperty] / 2) {
						nearBottom = true;
					}

					if (Math.abs(event[axis] - cur) < dist) {
						dist = Math.abs(event[axis] - cur);
						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]) {
					if (!this.currentContainer.containerCache.over) {
						this.containers[innermostIndex]._trigger("over", event, this._uiHash());
						this.currentContainer.containerCache.over = 1;
					}
					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] !== this.document[0] &&
				$.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] === this.document[0].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" ?
						this.document.width() :
						this.window.width() - this.helperProportions.width - this.margins.left,
					(o.containment === "document" ?
						(this.document.height() || document.body.parentNode.scrollHeight) :
						this.window.height() || this.document[0].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] !== this.document[0] &&
						$.contains(this.scrollParent[0], this.offsetParent[0])) ?
					this.offsetParent :
					this.scrollParent,
				scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);

			return {
				top: (

					// The absolute mouse position
					pos.top +

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.top * mod +

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.top * mod -
					((this.cssPosition === "fixed" ?
						-this.scrollParent.scrollTop() :
						(scrollIsRootNode ? 0 : scroll.scrollTop())) * mod)
				),
				left: (

					// The absolute mouse position
					pos.left +

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.left * mod +

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.left * mod -
					((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] !== this.document[0] &&
						$.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] !== this.document[0] &&
				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: (

					// The absolute mouse position
					pageY -

					// Click offset (relative to the element)
					this.offset.click.top -

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.top -

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.top +
					((this.cssPosition === "fixed" ?
						-this.scrollParent.scrollTop() :
						(scrollIsRootNode ? 0 : scroll.scrollTop())))
				),
				left: (

					// The absolute mouse position
					pageX -

					// Click offset (relative to the element)
					this.offset.click.left -

					// Only for relative positioned nodes: Relative offset from element to offset parent
					this.offset.relative.left -

					// The offsetParent's offset without borders (offset + border)
					this.offset.parent.left +
					((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) {
					//Precompute after each DOM insertion, NOT on mousemove
					this.refreshPositions(!hardRefresh);
				}
			});
		},

		_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);
				this._removeClass(this.currentItem, "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) {
				// Trigger update callback if the DOM position has changed
				delayedTriggers.push(function (event) {
					this._trigger("update", event, this._uiHash());
				});
			}

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

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

			this.fromOutside = false;
			return !this.cancelHelperRemoval;
		},

		_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
			};
		}
	});
}));