/*! jQuery UI - v1.10.3 - 2013-12-06
* http://jqueryui.com
* Includes: jquery.ui.core.js, jquery.ui.widget.js, jquery.ui.position.js, jquery.ui.accordion.js, jquery.ui.autocomplete.js, jquery.ui.datepicker.js, jquery.ui.menu.js, jquery.ui.tabs.js
* Copyright 2013 jQuery Foundation and other contributors; Licensed MIT */

(function ($, undefined) {

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

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

    $.extend($.ui, {
        version: "1.10.3",

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

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

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

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

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

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

            return 0;
        },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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





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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                    returnValue = value.apply(this, arguments);

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

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

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

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

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

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

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

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

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

            return returnValue;
        };
    };

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

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

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

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

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

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

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

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

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

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

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

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

            this._setOptions(options);

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

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

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

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

            return this;
        },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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



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

    $.widget("ui.mouse", {
        version: "1.10.3",
        options: {
            cancel: "input,textarea,button,select,option",
            distance: 1,
            delay: 0
        },
        _mouseInit: function () {
            var that = this;

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

            this.started = false;
        },

        // TODO: make sure destroying one instance of mouse doesn't mess with
        // other instances of mouse
        _mouseDestroy: function () {
            this.element.unbind("." + this.widgetName);
            if (this._mouseMoveDelegate) {
                $(document)
                    .unbind("mousemove." + this.widgetName, this._mouseMoveDelegate)
                    .unbind("mouseup." + this.widgetName, this._mouseUpDelegate);
            }
        },

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

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

            this._mouseDownEvent = event;

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

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

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

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

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

            event.preventDefault();

            mouseHandled = true;
            return true;
        },

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

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

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

            return !this._mouseStarted;
        },

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

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

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

                this._mouseStop(event);
            }

            return false;
        },

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

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

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

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




    $.ui = $.ui || {};

    var cachedScrollbarWidth,
        max = Math.max,
        abs = Math.abs,
        round = Math.round,
        rhorizontal = /left|center|right/,
        rvertical = /top|center|bottom/,
        roffset = /[\+\-]\d+(\.[\d]+)?%?/,
        rposition = /^\w+/,
        rpercent = /%$/,
        _position = $.fn.position;

    function getOffsets(offsets, width, height) {
        return [
            parseFloat(offsets[0]) * (rpercent.test(offsets[0]) ? width / 100 : 1),
            parseFloat(offsets[1]) * (rpercent.test(offsets[1]) ? height / 100 : 1)
        ];
    }

    function parseCss(element, property) {
        return parseInt($.css(element, property), 10) || 0;
    }

    function getDimensions(elem) {
        var raw = elem[0];
        if (raw.nodeType === 9) {
            return {
                width: elem.width(),
                height: elem.height(),
                offset: { top: 0, left: 0 }
            };
        }
        if ($.isWindow(raw)) {
            return {
                width: elem.width(),
                height: elem.height(),
                offset: { top: elem.scrollTop(), left: elem.scrollLeft() }
            };
        }
        if (raw.preventDefault) {
            return {
                width: 0,
                height: 0,
                offset: { top: raw.pageY, left: raw.pageX }
            };
        }
        return {
            width: elem.outerWidth(),
            height: elem.outerHeight(),
            offset: elem.offset()
        };
    }

    $.position = {
        scrollbarWidth: function () {
            if (cachedScrollbarWidth !== undefined) {
                return cachedScrollbarWidth;
            }
            var w1, w2,
                div = $("<div style='display:block;width:50px;height:50px;overflow:hidden;'><div style='height:100px;width:auto;'></div></div>"),
                innerDiv = div.children()[0];

            $("body").append(div);
            w1 = innerDiv.offsetWidth;
            div.css("overflow", "scroll");

            w2 = innerDiv.offsetWidth;

            if (w1 === w2) {
                w2 = div[0].clientWidth;
            }

            div.remove();

            return (cachedScrollbarWidth = w1 - w2);
        },
        getScrollInfo: function (within) {
            var overflowX = within.isWindow ? "" : within.element.css("overflow-x"),
                overflowY = within.isWindow ? "" : within.element.css("overflow-y"),
                hasOverflowX = overflowX === "scroll" ||
                    (overflowX === "auto" && within.width < within.element[0].scrollWidth),
                hasOverflowY = overflowY === "scroll" ||
                    (overflowY === "auto" && within.height < within.element[0].scrollHeight);
            return {
                width: hasOverflowY ? $.position.scrollbarWidth() : 0,
                height: hasOverflowX ? $.position.scrollbarWidth() : 0
            };
        },
        getWithinInfo: function (element) {
            var withinElement = $(element || window),
                isWindow = $.isWindow(withinElement[0]);
            return {
                element: withinElement,
                isWindow: isWindow,
                offset: withinElement.offset() || { left: 0, top: 0 },
                scrollLeft: withinElement.scrollLeft(),
                scrollTop: withinElement.scrollTop(),
                width: isWindow ? withinElement.width() : withinElement.outerWidth(),
                height: isWindow ? withinElement.height() : withinElement.outerHeight()
            };
        }
    };

    $.fn.position = function (options) {
        if (!options || !options.of) {
            return _position.apply(this, arguments);
        }

        // make a copy, we don't want to modify arguments
        options = $.extend({}, options);

        var atOffset, targetWidth, targetHeight, targetOffset, basePosition, dimensions,
            target = $(options.of),
            within = $.position.getWithinInfo(options.within),
            scrollInfo = $.position.getScrollInfo(within),
            collision = (options.collision || "flip").split(" "),
            offsets = {};

        dimensions = getDimensions(target);
        if (target[0].preventDefault) {
            // force left top to allow flipping
            options.at = "left top";
        }
        targetWidth = dimensions.width;
        targetHeight = dimensions.height;
        targetOffset = dimensions.offset;
        // clone to reuse original targetOffset later
        basePosition = $.extend({}, targetOffset);

        // force my and at to have valid horizontal and vertical positions
        // if a value is missing or invalid, it will be converted to center
        $.each(["my", "at"], function () {
            var pos = (options[this] || "").split(" "),
                horizontalOffset,
                verticalOffset;

            if (pos.length === 1) {
                pos = rhorizontal.test(pos[0]) ?
                    pos.concat(["center"]) :
                    rvertical.test(pos[0]) ?
                        ["center"].concat(pos) :
                        ["center", "center"];
            }
            pos[0] = rhorizontal.test(pos[0]) ? pos[0] : "center";
            pos[1] = rvertical.test(pos[1]) ? pos[1] : "center";

            // calculate offsets
            horizontalOffset = roffset.exec(pos[0]);
            verticalOffset = roffset.exec(pos[1]);
            offsets[this] = [
                horizontalOffset ? horizontalOffset[0] : 0,
                verticalOffset ? verticalOffset[0] : 0
            ];

            // reduce to just the positions without the offsets
            options[this] = [
                rposition.exec(pos[0])[0],
                rposition.exec(pos[1])[0]
            ];
        });

        // normalize collision option
        if (collision.length === 1) {
            collision[1] = collision[0];
        }

        if (options.at[0] === "right") {
            basePosition.left += targetWidth;
        } else if (options.at[0] === "center") {
            basePosition.left += targetWidth / 2;
        }

        if (options.at[1] === "bottom") {
            basePosition.top += targetHeight;
        } else if (options.at[1] === "center") {
            basePosition.top += targetHeight / 2;
        }

        atOffset = getOffsets(offsets.at, targetWidth, targetHeight);
        basePosition.left += atOffset[0];
        basePosition.top += atOffset[1];

        return this.each(function () {
            var collisionPosition, using,
                elem = $(this),
                elemWidth = elem.outerWidth(),
                elemHeight = elem.outerHeight(),
                marginLeft = parseCss(this, "marginLeft"),
                marginTop = parseCss(this, "marginTop"),
                collisionWidth = elemWidth + marginLeft + parseCss(this, "marginRight") + scrollInfo.width,
                collisionHeight = elemHeight + marginTop + parseCss(this, "marginBottom") + scrollInfo.height,
                position = $.extend({}, basePosition),
                myOffset = getOffsets(offsets.my, elem.outerWidth(), elem.outerHeight());

            if (options.my[0] === "right") {
                position.left -= elemWidth;
            } else if (options.my[0] === "center") {
                position.left -= elemWidth / 2;
            }

            if (options.my[1] === "bottom") {
                position.top -= elemHeight;
            } else if (options.my[1] === "center") {
                position.top -= elemHeight / 2;
            }

            position.left += myOffset[0];
            position.top += myOffset[1];

            // if the browser doesn't support fractions, then round for consistent results
            if (!$.support.offsetFractions) {
                position.left = round(position.left);
                position.top = round(position.top);
            }

            collisionPosition = {
                marginLeft: marginLeft,
                marginTop: marginTop
            };

            $.each(["left", "top"], function (i, dir) {
                if ($.ui.position[collision[i]]) {
                    $.ui.position[collision[i]][dir](position, {
                        targetWidth: targetWidth,
                        targetHeight: targetHeight,
                        elemWidth: elemWidth,
                        elemHeight: elemHeight,
                        collisionPosition: collisionPosition,
                        collisionWidth: collisionWidth,
                        collisionHeight: collisionHeight,
                        offset: [atOffset[0] + myOffset[0], atOffset[1] + myOffset[1]],
                        my: options.my,
                        at: options.at,
                        within: within,
                        elem: elem
                    });
                }
            });

            if (options.using) {
                // adds feedback as second argument to using callback, if present
                using = function (props) {
                    var left = targetOffset.left - position.left,
                        right = left + targetWidth - elemWidth,
                        top = targetOffset.top - position.top,
                        bottom = top + targetHeight - elemHeight,
                        feedback = {
                            target: {
                                element: target,
                                left: targetOffset.left,
                                top: targetOffset.top,
                                width: targetWidth,
                                height: targetHeight
                            },
                            element: {
                                element: elem,
                                left: position.left,
                                top: position.top,
                                width: elemWidth,
                                height: elemHeight
                            },
                            horizontal: right < 0 ? "left" : left > 0 ? "right" : "center",
                            vertical: bottom < 0 ? "top" : top > 0 ? "bottom" : "middle"
                        };
                    if (targetWidth < elemWidth && abs(left + right) < targetWidth) {
                        feedback.horizontal = "center";
                    }
                    if (targetHeight < elemHeight && abs(top + bottom) < targetHeight) {
                        feedback.vertical = "middle";
                    }
                    if (max(abs(left), abs(right)) > max(abs(top), abs(bottom))) {
                        feedback.important = "horizontal";
                    } else {
                        feedback.important = "vertical";
                    }
                    options.using.call(this, props, feedback);
                };
            }

            elem.offset($.extend(position, { using: using }));
        });
    };

    $.ui.position = {
        fit: {
            left: function (position, data) {
                var within = data.within,
                    withinOffset = within.isWindow ? within.scrollLeft : within.offset.left,
                    outerWidth = within.width,
                    collisionPosLeft = position.left - data.collisionPosition.marginLeft,
                    overLeft = withinOffset - collisionPosLeft,
                    overRight = collisionPosLeft + data.collisionWidth - outerWidth - withinOffset,
                    newOverRight;

                // element is wider than within
                if (data.collisionWidth > outerWidth) {
                    // element is initially over the left side of within
                    if (overLeft > 0 && overRight <= 0) {
                        newOverRight = position.left + overLeft + data.collisionWidth - outerWidth - withinOffset;
                        position.left += overLeft - newOverRight;
                        // element is initially over right side of within
                    } else if (overRight > 0 && overLeft <= 0) {
                        position.left = withinOffset;
                        // element is initially over both left and right sides of within
                    } else {
                        if (overLeft > overRight) {
                            position.left = withinOffset + outerWidth - data.collisionWidth;
                        } else {
                            position.left = withinOffset;
                        }
                    }
                    // too far left -> align with left edge
                } else if (overLeft > 0) {
                    position.left += overLeft;
                    // too far right -> align with right edge
                } else if (overRight > 0) {
                    position.left -= overRight;
                    // adjust based on position and margin
                } else {
                    position.left = max(position.left - collisionPosLeft, position.left);
                }
            },
            top: function (position, data) {
                var within = data.within,
                    withinOffset = within.isWindow ? within.scrollTop : within.offset.top,
                    outerHeight = data.within.height,
                    collisionPosTop = position.top - data.collisionPosition.marginTop,
                    overTop = withinOffset - collisionPosTop,
                    overBottom = collisionPosTop + data.collisionHeight - outerHeight - withinOffset,
                    newOverBottom;

                // element is taller than within
                if (data.collisionHeight > outerHeight) {
                    // element is initially over the top of within
                    if (overTop > 0 && overBottom <= 0) {
                        newOverBottom = position.top + overTop + data.collisionHeight - outerHeight - withinOffset;
                        position.top += overTop - newOverBottom;
                        // element is initially over bottom of within
                    } else if (overBottom > 0 && overTop <= 0) {
                        position.top = withinOffset;
                        // element is initially over both top and bottom of within
                    } else {
                        if (overTop > overBottom) {
                            position.top = withinOffset + outerHeight - data.collisionHeight;
                        } else {
                            position.top = withinOffset;
                        }
                    }
                    // too far up -> align with top
                } else if (overTop > 0) {
                    position.top += overTop;
                    // too far down -> align with bottom edge
                } else if (overBottom > 0) {
                    position.top -= overBottom;
                    // adjust based on position and margin
                } else {
                    position.top = max(position.top - collisionPosTop, position.top);
                }
            }
        },
        flip: {
            left: function (position, data) {
                var within = data.within,
                    withinOffset = within.offset.left + within.scrollLeft,
                    outerWidth = within.width,
                    offsetLeft = within.isWindow ? within.scrollLeft : within.offset.left,
                    collisionPosLeft = position.left - data.collisionPosition.marginLeft,
                    overLeft = collisionPosLeft - offsetLeft,
                    overRight = collisionPosLeft + data.collisionWidth - outerWidth - offsetLeft,
                    myOffset = data.my[0] === "left" ?
                        -data.elemWidth :
                        data.my[0] === "right" ?
                            data.elemWidth :
                            0,
                    atOffset = data.at[0] === "left" ?
                        data.targetWidth :
                        data.at[0] === "right" ?
                            -data.targetWidth :
                            0,
                    offset = -2 * data.offset[0],
                    newOverRight,
                    newOverLeft;

                if (overLeft < 0) {
                    newOverRight = position.left + myOffset + atOffset + offset + data.collisionWidth - outerWidth - withinOffset;
                    if (newOverRight < 0 || newOverRight < abs(overLeft)) {
                        position.left += myOffset + atOffset + offset;
                    }
                }
                else if (overRight > 0) {
                    newOverLeft = position.left - data.collisionPosition.marginLeft + myOffset + atOffset + offset - offsetLeft;
                    if (newOverLeft > 0 || abs(newOverLeft) < overRight) {
                        position.left += myOffset + atOffset + offset;
                    }
                }
            },
            top: function (position, data) {
                var within = data.within,
                    withinOffset = within.offset.top + within.scrollTop,
                    outerHeight = within.height,
                    offsetTop = within.isWindow ? within.scrollTop : within.offset.top,
                    collisionPosTop = position.top - data.collisionPosition.marginTop,
                    overTop = collisionPosTop - offsetTop,
                    overBottom = collisionPosTop + data.collisionHeight - outerHeight - offsetTop,
                    top = data.my[1] === "top",
                    myOffset = top ?
                        -data.elemHeight :
                        data.my[1] === "bottom" ?
                            data.elemHeight :
                            0,
                    atOffset = data.at[1] === "top" ?
                        data.targetHeight :
                        data.at[1] === "bottom" ?
                            -data.targetHeight :
                            0,
                    offset = -2 * data.offset[1],
                    newOverTop,
                    newOverBottom;
                if (overTop < 0) {
                    newOverBottom = position.top + myOffset + atOffset + offset + data.collisionHeight - outerHeight - withinOffset;
                    if ((position.top + myOffset + atOffset + offset) > overTop && (newOverBottom < 0 || newOverBottom < abs(overTop))) {
                        position.top += myOffset + atOffset + offset;
                    }
                }
                else if (overBottom > 0) {
                    newOverTop = position.top - data.collisionPosition.marginTop + myOffset + atOffset + offset - offsetTop;
                    if ((position.top + myOffset + atOffset + offset) > overBottom && (newOverTop > 0 || abs(newOverTop) < overBottom)) {
                        position.top += myOffset + atOffset + offset;
                    }
                }
            }
        },
        flipfit: {
            left: function () {
                $.ui.position.flip.left.apply(this, arguments);
                $.ui.position.fit.left.apply(this, arguments);
            },
            top: function () {
                $.ui.position.flip.top.apply(this, arguments);
                $.ui.position.fit.top.apply(this, arguments);
            }
        }
    };

    // fraction support test
    (function () {
        var testElement, testElementParent, testElementStyle, offsetLeft, i,
            body = document.getElementsByTagName("body")[0],
            div = document.createElement("div");

        //Create a "fake body" for testing based on method used in jQuery.support
        testElement = document.createElement(body ? "div" : "body");
        testElementStyle = {
            visibility: "hidden",
            width: 0,
            height: 0,
            border: 0,
            margin: 0,
            background: "none"
        };
        if (body) {
            $.extend(testElementStyle, {
                position: "absolute",
                left: "-1000px",
                top: "-1000px"
            });
        }
        for (i in testElementStyle) {
            testElement.style[i] = testElementStyle[i];
        }
        testElement.appendChild(div);
        testElementParent = body || document.documentElement;
        testElementParent.insertBefore(testElement, testElementParent.firstChild);

        div.style.cssText = "position: absolute; left: 10.7432222px;";

        offsetLeft = $(div).offset().left;
        $.support.offsetFractions = offsetLeft > 10 && offsetLeft < 11;

        testElement.innerHTML = "";
        testElementParent.removeChild(testElement);
    })();

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

    var uid = 0,
        hideProps = {},
        showProps = {};

    hideProps.height = hideProps.paddingTop = hideProps.paddingBottom =
        hideProps.borderTopWidth = hideProps.borderBottomWidth = "hide";
    showProps.height = showProps.paddingTop = showProps.paddingBottom =
        showProps.borderTopWidth = showProps.borderBottomWidth = "show";

    $.widget("ui.accordion", {
        version: "1.10.3",
        options: {
            active: 0,
            animate: {},
            collapsible: false,
            event: "click",
            header: "> li > :first-child,> :not(li):even",
            heightStyle: "auto",
            icons: {
                activeHeader: "ui-icon-triangle-1-s",
                header: "ui-icon-triangle-1-e"
            },

            // callbacks
            activate: null,
            beforeActivate: null
        },

        _create: function () {
            var options = this.options;
            this.prevShow = this.prevHide = $();
            this.element.addClass("ui-accordion ui-widget ui-helper-reset")
                // ARIA
                .attr("role", "tablist");

            // don't allow collapsible: false and active: false / null
            if (!options.collapsible && (options.active === false || options.active == null)) {
                options.active = 0;
            }

            this._processPanels();
            // handle negative values
            if (options.active < 0) {
                options.active += this.headers.length;
            }
            this._refresh();
        },

        _getCreateEventData: function () {
            return {
                header: this.active,
                panel: !this.active.length ? $() : this.active.next(),
                content: !this.active.length ? $() : this.active.next()
            };
        },

        _createIcons: function () {
            var icons = this.options.icons;
            if (icons) {
                $("<span>")
                    .addClass("ui-accordion-header-icon ui-icon " + icons.header)
                    .prependTo(this.headers);
                this.active.children(".ui-accordion-header-icon")
                    .removeClass(icons.header)
                    .addClass(icons.activeHeader);
                this.headers.addClass("ui-accordion-icons");
            }
        },

        _destroyIcons: function () {
            this.headers
                .removeClass("ui-accordion-icons")
                .children(".ui-accordion-header-icon")
                    .remove();
        },

        _destroy: function () {
            var contents;

            // clean up main element
            this.element
                .removeClass("ui-accordion ui-widget ui-helper-reset")
                .removeAttr("role");

            // clean up headers
            this.headers
                .removeClass("ui-accordion-header ui-accordion-header-active ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-state-disabled ui-corner-top")
                .removeAttr("role")
                .removeAttr("aria-selected")
                .removeAttr("aria-controls")
                .removeAttr("tabIndex")
                .each(function () {
                    if (/^ui-accordion/.test(this.id)) {
                        this.removeAttribute("id");
                    }
                });
            this._destroyIcons();

            // clean up content panels
            contents = this.headers.next()
                .css("display", "")
                .removeAttr("role")
                .removeAttr("aria-expanded")
                .removeAttr("aria-hidden")
                .removeAttr("aria-labelledby")
                .removeClass("ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active ui-state-disabled")
                .each(function () {
                    if (/^ui-accordion/.test(this.id)) {
                        this.removeAttribute("id");
                    }
                });
            if (this.options.heightStyle !== "content") {
                contents.css("height", "");
            }
        },

        _setOption: function (key, value) {
            if (key === "active") {
                // _activate() will handle invalid values and update this.options
                this._activate(value);
                return;
            }

            if (key === "event") {
                if (this.options.event) {
                    this._off(this.headers, this.options.event);
                }
                this._setupEvents(value);
            }

            this._super(key, value);

            // setting collapsible: false while collapsed; open first panel
            if (key === "collapsible" && !value && this.options.active === false) {
                this._activate(0);
            }

            if (key === "icons") {
                this._destroyIcons();
                if (value) {
                    this._createIcons();
                }
            }

            // #5332 - opacity doesn't cascade to positioned elements in IE
            // so we need to add the disabled class to the headers and panels
            if (key === "disabled") {
                this.headers.add(this.headers.next())
                    .toggleClass("ui-state-disabled", !!value);
            }
        },

        _keydown: function (event) {
            /*jshint maxcomplexity:15*/
            if (event.altKey || event.ctrlKey) {
                return;
            }

            var keyCode = $.ui.keyCode,
                length = this.headers.length,
                currentIndex = this.headers.index(event.target),
                toFocus = false;

            switch (event.keyCode) {
                case keyCode.RIGHT:
                case keyCode.DOWN:
                    toFocus = this.headers[(currentIndex + 1) % length];
                    break;
                case keyCode.LEFT:
                case keyCode.UP:
                    toFocus = this.headers[(currentIndex - 1 + length) % length];
                    break;
                case keyCode.SPACE:
                case keyCode.ENTER:
                    this._eventHandler(event);
                    break;
                case keyCode.HOME:
                    toFocus = this.headers[0];
                    break;
                case keyCode.END:
                    toFocus = this.headers[length - 1];
                    break;
            }

            if (toFocus) {
                $(event.target).attr("tabIndex", -1);
                $(toFocus).attr("tabIndex", 0);
                toFocus.focus();
                event.preventDefault();
            }
        },

        _panelKeyDown: function (event) {
            if (event.keyCode === $.ui.keyCode.UP && event.ctrlKey) {
                $(event.currentTarget).prev().focus();
            }
        },

        refresh: function () {
            var options = this.options;
            this._processPanels();

            // was collapsed or no panel
            if ((options.active === false && options.collapsible === true) || !this.headers.length) {
                options.active = false;
                this.active = $();
                // active false only when collapsible is true
            } else if (options.active === false) {
                this._activate(0);
                // was active, but active panel is gone
            } else if (this.active.length && !$.contains(this.element[0], this.active[0])) {
                // all remaining panel are disabled
                if (this.headers.length === this.headers.find(".ui-state-disabled").length) {
                    options.active = false;
                    this.active = $();
                    // activate previous panel
                } else {
                    this._activate(Math.max(0, options.active - 1));
                }
                // was active, active panel still exists
            } else {
                // make sure active index is correct
                options.active = this.headers.index(this.active);
            }

            this._destroyIcons();

            this._refresh();
        },

        _processPanels: function () {
            this.headers = this.element.find(this.options.header)
                .addClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all");

            this.headers.next()
                .addClass("ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom")
                .filter(":not(.ui-accordion-content-active)")
                .hide();
        },

        _refresh: function () {
            var maxHeight,
                options = this.options,
                heightStyle = options.heightStyle,
                parent = this.element.parent(),
                accordionId = this.accordionId = "ui-accordion-" +
                    (this.element.attr("id") || ++uid);

            this.active = this._findActive(options.active)
                .addClass("ui-accordion-header-active ui-state-active ui-corner-top")
                .removeClass("ui-corner-all");
            this.active.next()
                .addClass("ui-accordion-content-active")
                .show();

            this.headers
                .attr("role", "tab")
                .each(function (i) {
                    var header = $(this),
                        headerId = header.attr("id"),
                        panel = header.next(),
                        panelId = panel.attr("id");
                    if (!headerId) {
                        headerId = accordionId + "-header-" + i;
                        header.attr("id", headerId);
                    }
                    if (!panelId) {
                        panelId = accordionId + "-panel-" + i;
                        panel.attr("id", panelId);
                    }
                    header.attr("aria-controls", panelId);
                    panel.attr("aria-labelledby", headerId);
                })
                .next()
                    .attr("role", "tabpanel");

            this.headers
                .not(this.active)
                .attr({
                    "aria-selected": "false",
                    tabIndex: -1
                })
                .next()
                    .attr({
                        "aria-expanded": "false",
                        "aria-hidden": "true"
                    })
                    .hide();

            // make sure at least one header is in the tab order
            if (!this.active.length) {
                this.headers.eq(0).attr("tabIndex", 0);
            } else {
                this.active.attr({
                    "aria-selected": "true",
                    tabIndex: 0
                })
                .next()
                    .attr({
                        "aria-expanded": "true",
                        "aria-hidden": "false"
                    });
            }

            this._createIcons();

            this._setupEvents(options.event);

            if (heightStyle === "fill") {
                maxHeight = parent.height();
                this.element.siblings(":visible").each(function () {
                    var elem = $(this),
                        position = elem.css("position");

                    if (position === "absolute" || position === "fixed") {
                        return;
                    }
                    maxHeight -= elem.outerHeight(true);
                });

                this.headers.each(function () {
                    maxHeight -= $(this).outerHeight(true);
                });

                this.headers.next()
                    .each(function () {
                        $(this).height(Math.max(0, maxHeight -
                            $(this).innerHeight() + $(this).height()));
                    })
                    .css("overflow", "auto");
            } else if (heightStyle === "auto") {
                maxHeight = 0;
                this.headers.next()
                    .each(function () {
                        maxHeight = Math.max(maxHeight, $(this).css("height", "").height());
                    })
                    .height(maxHeight);
            }
        },

        _activate: function (index) {
            var active = this._findActive(index)[0];

            // trying to activate the already active panel
            if (active === this.active[0]) {
                return;
            }

            // trying to collapse, simulate a click on the currently active header
            active = active || this.active[0];

            this._eventHandler({
                target: active,
                currentTarget: active,
                preventDefault: $.noop
            });
        },

        _findActive: function (selector) {
            return typeof selector === "number" ? this.headers.eq(selector) : $();
        },

        _setupEvents: function (event) {
            var events = {
                keydown: "_keydown"
            };
            if (event) {
                $.each(event.split(" "), function (index, eventName) {
                    events[eventName] = "_eventHandler";
                });
            }

            this._off(this.headers.add(this.headers.next()));
            this._on(this.headers, events);
            this._on(this.headers.next(), { keydown: "_panelKeyDown" });
            this._hoverable(this.headers);
            this._focusable(this.headers);
        },

        _eventHandler: function (event) {
            var options = this.options,
                active = this.active,
                clicked = $(event.currentTarget),
                clickedIsActive = clicked[0] === active[0],
                collapsing = clickedIsActive && options.collapsible,
                toShow = collapsing ? $() : clicked.next(),
                toHide = active.next(),
                eventData = {
                    oldHeader: active,
                    oldPanel: toHide,
                    newHeader: collapsing ? $() : clicked,
                    newPanel: toShow
                };

            event.preventDefault();

            if (
                // click on active header, but not collapsible
                    (clickedIsActive && !options.collapsible) ||
                // allow canceling activation
                    (this._trigger("beforeActivate", event, eventData) === false)) {
                return;
            }

            options.active = collapsing ? false : this.headers.index(clicked);

            // when the call to ._toggle() comes after the class changes
            // it causes a very odd bug in IE 8 (see #6720)
            this.active = clickedIsActive ? $() : clicked;
            this._toggle(eventData);

            // switch classes
            // corner classes on the previously active header stay after the animation
            active.removeClass("ui-accordion-header-active ui-state-active");
            if (options.icons) {
                active.children(".ui-accordion-header-icon")
                    .removeClass(options.icons.activeHeader)
                    .addClass(options.icons.header);
            }

            if (!clickedIsActive) {
                clicked
                    .removeClass("ui-corner-all")
                    .addClass("ui-accordion-header-active ui-state-active ui-corner-top");
                if (options.icons) {
                    clicked.children(".ui-accordion-header-icon")
                        .removeClass(options.icons.header)
                        .addClass(options.icons.activeHeader);
                }

                clicked
                    .next()
                    .addClass("ui-accordion-content-active");
            }
        },

        _toggle: function (data) {
            var toShow = data.newPanel,
                toHide = this.prevShow.length ? this.prevShow : data.oldPanel;

            // handle activating a panel during the animation for another activation
            this.prevShow.add(this.prevHide).stop(true, true);
            this.prevShow = toShow;
            this.prevHide = toHide;

            if (this.options.animate) {
                this._animate(toShow, toHide, data);
            } else {
                toHide.hide();
                toShow.show();
                this._toggleComplete(data);
            }

            toHide.attr({
                "aria-expanded": "false",
                "aria-hidden": "true"
            });
            toHide.prev().attr("aria-selected", "false");
            // if we're switching panels, remove the old header from the tab order
            // if we're opening from collapsed state, remove the previous header from the tab order
            // if we're collapsing, then keep the collapsing header in the tab order
            if (toShow.length && toHide.length) {
                toHide.prev().attr("tabIndex", -1);
            } else if (toShow.length) {
                this.headers.filter(function () {
                    return $(this).attr("tabIndex") === 0;
                })
                .attr("tabIndex", -1);
            }

            toShow
                .attr({
                    "aria-expanded": "true",
                    "aria-hidden": "false"
                })
                .prev()
                    .attr({
                        "aria-selected": "true",
                        tabIndex: 0
                    });
        },

        _animate: function (toShow, toHide, data) {
            var total, easing, duration,
                that = this,
                adjust = 0,
                down = toShow.length &&
                    (!toHide.length || (toShow.index() < toHide.index())),
                animate = this.options.animate || {},
                options = down && animate.down || animate,
                complete = function () {
                    that._toggleComplete(data);
                };

            if (typeof options === "number") {
                duration = options;
            }
            if (typeof options === "string") {
                easing = options;
            }
            // fall back from options to animation in case of partial down settings
            easing = easing || options.easing || animate.easing;
            duration = duration || options.duration || animate.duration;

            if (!toHide.length) {
                return toShow.animate(showProps, duration, easing, complete);
            }
            if (!toShow.length) {
                return toHide.animate(hideProps, duration, easing, complete);
            }

            total = toShow.show().outerHeight();
            toHide.animate(hideProps, {
                duration: duration,
                easing: easing,
                step: function (now, fx) {
                    fx.now = Math.round(now);
                }
            });
            toShow
                .hide()
                .animate(showProps, {
                    duration: duration,
                    easing: easing,
                    complete: complete,
                    step: function (now, fx) {
                        fx.now = Math.round(now);
                        if (fx.prop !== "height") {
                            adjust += fx.now;
                        } else if (that.options.heightStyle !== "content") {
                            fx.now = Math.round(total - toHide.outerHeight() - adjust);
                            adjust = 0;
                        }
                    }
                });
        },

        _toggleComplete: function (data) {
            var toHide = data.oldPanel;

            toHide
                .removeClass("ui-accordion-content-active")
                .prev()
                    .removeClass("ui-corner-top")
                    .addClass("ui-corner-all");

            // Work around for rendering bug in IE (#5421)
            if (toHide.length) {
                toHide.parent()[0].className = toHide.parent()[0].className;
            }

            this._trigger("activate", null, data);
        }
    });

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

    // used to prevent race conditions with remote data sources
    var requestIndex = 0;

    $.widget("ui.autocomplete", {
        version: "1.10.3",
        defaultElement: "<input>",
        options: {
            appendTo: null,
            autoFocus: false,
            delay: 300,
            minLength: 1,
            position: {
                my: "left top",
                at: "left bottom",
                collision: "none"
            },
            source: null,

            // callbacks
            change: null,
            close: null,
            focus: null,
            open: null,
            response: null,
            search: null,
            select: null
        },

        pending: 0,

        _create: function () {
            // Some browsers only repeat keydown events, not keypress events,
            // so we use the suppressKeyPress flag to determine if we've already
            // handled the keydown event. #7269
            // Unfortunately the code for & in keypress is the same as the up arrow,
            // so we use the suppressKeyPressRepeat flag to avoid handling keypress
            // events when we know the keydown event was used to modify the
            // search term. #7799
            var suppressKeyPress, suppressKeyPressRepeat, suppressInput,
                nodeName = this.element[0].nodeName.toLowerCase(),
                isTextarea = nodeName === "textarea",
                isInput = nodeName === "input";

            this.isMultiLine =
                // Textareas are always multi-line
                isTextarea ? true :
                // Inputs are always single-line, even if inside a contentEditable element
                // IE also treats inputs as contentEditable
                isInput ? false :
                // All other element types are determined by whether or not they're contentEditable
                this.element.prop("isContentEditable");

            this.valueMethod = this.element[isTextarea || isInput ? "val" : "text"];
            this.isNewMenu = true;

            this.element
                .addClass("ui-autocomplete-input")
                .attr("autocomplete", "off");

            this._on(this.element, {
                keydown: function (event) {
                    /*jshint maxcomplexity:15*/
                    if (this.element.prop("readOnly")) {
                        suppressKeyPress = true;
                        suppressInput = true;
                        suppressKeyPressRepeat = true;
                        return;
                    }

                    suppressKeyPress = false;
                    suppressInput = false;
                    suppressKeyPressRepeat = false;
                    var keyCode = $.ui.keyCode;
                    switch (event.keyCode) {
                        case keyCode.PAGE_UP:
                            suppressKeyPress = true;
                            this._move("previousPage", event);
                            break;
                        case keyCode.PAGE_DOWN:
                            suppressKeyPress = true;
                            this._move("nextPage", event);
                            break;
                        case keyCode.UP:
                            suppressKeyPress = true;
                            this._keyEvent("previous", event);
                            break;
                        case keyCode.DOWN:
                            suppressKeyPress = true;
                            this._keyEvent("next", event);
                            break;
                        case keyCode.ENTER:
                        case keyCode.NUMPAD_ENTER:
                            // when menu is open and has focus
                            if (this.menu.active) {
                                // #6055 - Opera still allows the keypress to occur
                                // which causes forms to submit
                                suppressKeyPress = true;
                                event.preventDefault();
                                this.menu.select(event);
                            }
                            break;
                        case keyCode.TAB:
                            if (this.menu.active) {
                                this.menu.select(event);
                            }
                            break;
                        case keyCode.ESCAPE:
                            if (this.menu.element.is(":visible")) {
                                this._value(this.term);
                                this.close(event);
                                // Different browsers have different default behavior for escape
                                // Single press can mean undo or clear
                                // Double press in IE means clear the whole form
                                event.preventDefault();
                            }
                            break;
                        default:
                            suppressKeyPressRepeat = true;
                            // search timeout should be triggered before the input value is changed
                            this._searchTimeout(event);
                            break;
                    }
                },
                keypress: function (event) {
                    if (suppressKeyPress) {
                        suppressKeyPress = false;
                        if (!this.isMultiLine || this.menu.element.is(":visible")) {
                            event.preventDefault();
                        }
                        return;
                    }
                    if (suppressKeyPressRepeat) {
                        return;
                    }

                    // replicate some key handlers to allow them to repeat in Firefox and Opera
                    var keyCode = $.ui.keyCode;
                    switch (event.keyCode) {
                        case keyCode.PAGE_UP:
                            this._move("previousPage", event);
                            break;
                        case keyCode.PAGE_DOWN:
                            this._move("nextPage", event);
                            break;
                        case keyCode.UP:
                            this._keyEvent("previous", event);
                            break;
                        case keyCode.DOWN:
                            this._keyEvent("next", event);
                            break;
                    }
                },
                input: function (event) {
                    if (suppressInput) {
                        suppressInput = false;
                        event.preventDefault();
                        return;
                    }
                    this._searchTimeout(event);
                },
                focus: function () {
                    this.selectedItem = null;
                    this.previous = this._value();
                },
                blur: function (event) {
                    if (this.cancelBlur) {
                        delete this.cancelBlur;
                        return;
                    }

                    clearTimeout(this.searching);
                    this.close(event);
                    this._change(event);
                }
            });

            this._initSource();
            this.menu = $("<ul>")
                .addClass("ui-autocomplete ui-front")
                .appendTo(this._appendTo())
                .menu({
                    // disable ARIA support, the live region takes care of that
                    role: null
                })
                .hide()
                .data("ui-menu");

            this._on(this.menu.element, {
                mousedown: function (event) {
                    // prevent moving focus out of the text field
                    event.preventDefault();

                    // IE doesn't prevent moving focus even with event.preventDefault()
                    // so we set a flag to know when we should ignore the blur event
                    this.cancelBlur = true;
                    this._delay(function () {
                        delete this.cancelBlur;
                    });

                    // clicking on the scrollbar causes focus to shift to the body
                    // but we can't detect a mouseup or a click immediately afterward
                    // so we have to track the next mousedown and close the menu if
                    // the user clicks somewhere outside of the autocomplete
                    var menuElement = this.menu.element[0];
                    if (!$(event.target).closest(".ui-menu-item").length) {
                        this._delay(function () {
                            var that = this;
                            this.document.one("mousedown", function (event) {
                                if (event.target !== that.element[0] &&
                                        event.target !== menuElement &&
                                        !$.contains(menuElement, event.target)) {
                                    that.close();
                                }
                            });
                        });
                    }
                },
                menufocus: function (event, ui) {
                    // support: Firefox
                    // Prevent accidental activation of menu items in Firefox (#7024 #9118)
                    if (this.isNewMenu) {
                        this.isNewMenu = false;
                        if (event.originalEvent && /^mouse/.test(event.originalEvent.type)) {
                            this.menu.blur();

                            this.document.one("mousemove", function () {
                                $(event.target).trigger(event.originalEvent);
                            });

                            return;
                        }
                    }

                    var item = ui.item.data("ui-autocomplete-item");
                    if (false !== this._trigger("focus", event, { item: item })) {
                        // use value to match what will end up in the input, if it was a key event
                        if (event.originalEvent && /^key/.test(event.originalEvent.type)) {
                            this._value(item.value);
                        }
                    } else {
                        // Normally the input is populated with the item's value as the
                        // menu is navigated, causing screen readers to notice a change and
                        // announce the item. Since the focus event was canceled, this doesn't
                        // happen, so we update the live region so that screen readers can
                        // still notice the change and announce it.
                        this.liveRegion.text(item.value);
                    }
                },
                menuselect: function (event, ui) {
                    var item = ui.item.data("ui-autocomplete-item"),
                        previous = this.previous;

                    // only trigger when focus was lost (click on menu)
                    if (this.element[0] !== this.document[0].activeElement) {
                        this.element.focus();
                        this.previous = previous;
                        // #6109 - IE triggers two focus events and the second
                        // is asynchronous, so we need to reset the previous
                        // term synchronously and asynchronously :-(
                        this._delay(function () {
                            this.previous = previous;
                            this.selectedItem = item;
                        });
                    }

                    if (false !== this._trigger("select", event, { item: item })) {
                        this._value(item.value);
                    }
                    // reset the term after the select event
                    // this allows custom select handling to work properly
                    this.term = this._value();

                    this.close(event);
                    this.selectedItem = item;
                }
            });

            this.liveRegion = $("<span>", {
                role: "status",
                "aria-live": "polite"
            })
                .addClass("ui-helper-hidden-accessible")
                .insertBefore(this.element);

            // turning off autocomplete prevents the browser from remembering the
            // value when navigating through history, so we re-enable autocomplete
            // if the page is unloaded before the widget is destroyed. #7790
            this._on(this.window, {
                beforeunload: function () {
                    this.element.removeAttr("autocomplete");
                }
            });
        },

        _destroy: function () {
            clearTimeout(this.searching);
            this.element
                .removeClass("ui-autocomplete-input")
                .removeAttr("autocomplete");
            this.menu.element.remove();
            this.liveRegion.remove();
        },

        _setOption: function (key, value) {
            this._super(key, value);
            if (key === "source") {
                this._initSource();
            }
            if (key === "appendTo") {
                this.menu.element.appendTo(this._appendTo());
            }
            if (key === "disabled" && value && this.xhr) {
                this.xhr.abort();
            }
        },

        _appendTo: function () {
            var element = this.options.appendTo;

            if (element) {
                element = element.jquery || element.nodeType ?
                    $(element) :
                    this.document.find(element).eq(0);
            }

            if (!element) {
                element = this.element.closest(".ui-front");
            }

            if (!element.length) {
                element = this.document[0].body;
            }

            return element;
        },

        _initSource: function () {
            var array, url,
                that = this;
            if ($.isArray(this.options.source)) {
                array = this.options.source;
                this.source = function (request, response) {
                    response($.ui.autocomplete.filter(array, request.term));
                };
            } else if (typeof this.options.source === "string") {
                url = this.options.source;
                this.source = function (request, response) {
                    if (that.xhr) {
                        that.xhr.abort();
                    }
                    that.xhr = $.ajax({
                        url: url,
                        data: request,
                        dataType: "json",
                        success: function (data) {
                            response(data);
                        },
                        error: function () {
                            response([]);
                        }
                    });
                };
            } else {
                this.source = this.options.source;
            }
        },

        _searchTimeout: function (event) {
            clearTimeout(this.searching);
            this.searching = this._delay(function () {
                // only search if the value has changed
                if (this.term !== this._value()) {
                    this.selectedItem = null;
                    this.search(null, event);
                }
            }, this.options.delay);
        },

        search: function (value, event) {
            value = value != null ? value : this._value();

            // always save the actual value, not the one passed as an argument
            this.term = this._value();

            if (value.length < this.options.minLength) {
                return this.close(event);
            }

            if (this._trigger("search", event) === false) {
                return;
            }

            return this._search(value);
        },

        _search: function (value) {
            this.pending++;
            this.element.addClass("ui-autocomplete-loading");
            this.cancelSearch = false;

            this.source({ term: value }, this._response());
        },

        _response: function () {
            var that = this,
                index = ++requestIndex;

            return function (content) {
                if (index === requestIndex) {
                    that.__response(content);
                }

                that.pending--;
                if (!that.pending) {
                    that.element.removeClass("ui-autocomplete-loading");
                }
            };
        },

        __response: function (content) {
            if (content) {
                content = this._normalize(content);
            }
            this._trigger("response", null, { content: content });
            if (!this.options.disabled && content && content.length && !this.cancelSearch) {
                this._suggest(content);
                this._trigger("open");
            } else {
                // use ._close() instead of .close() so we don't cancel future searches
                this._close();
            }
        },

        close: function (event) {
            this.cancelSearch = true;
            this._close(event);
        },

        _close: function (event) {
            if (this.menu.element.is(":visible")) {
                this.menu.element.hide();
                this.menu.blur();
                this.isNewMenu = true;
                this._trigger("close", event);
            }
        },

        _change: function (event) {
            if (this.previous !== this._value()) {
                this._trigger("change", event, { item: this.selectedItem });
            }
        },

        _normalize: function (items) {
            // assume all items have the right format when the first item is complete
            if (items.length && items[0].label && items[0].value) {
                return items;
            }
            return $.map(items, function (item) {
                if (typeof item === "string") {
                    return {
                        label: item,
                        value: item
                    };
                }
                return $.extend({
                    label: item.label || item.value,
                    value: item.value || item.label
                }, item);
            });
        },

        _suggest: function (items) {
            var ul = this.menu.element.empty();
            this._renderMenu(ul, items);
            this.isNewMenu = true;
            this.menu.refresh();

            // size and position menu
            ul.show();
            this._resizeMenu();
            ul.position($.extend({
                of: this.element
            }, this.options.position));

            if (this.options.autoFocus) {
                this.menu.next();
            }
        },

        _resizeMenu: function () {
            var ul = this.menu.element;
            ul.outerWidth(Math.max(
                // Firefox wraps long text (possibly a rounding bug)
                // so we add 1px to avoid the wrapping (#7513)
                ul.width("").outerWidth() + 1,
                this.element.outerWidth()
            ));
        },

        _renderMenu: function (ul, items) {
            var that = this;
            $.each(items, function (index, item) {
                that._renderItemData(ul, item);
            });
        },

        _renderItemData: function (ul, item) {
            return this._renderItem(ul, item).data("ui-autocomplete-item", item);
        },

        _renderItem: function (ul, item) {
            return $("<li>")
                .append($("<a>").text(item.label))
                .appendTo(ul);
        },

        _move: function (direction, event) {
            if (!this.menu.element.is(":visible")) {
                this.search(null, event);
                return;
            }
            if (this.menu.isFirstItem() && /^previous/.test(direction) ||
                    this.menu.isLastItem() && /^next/.test(direction)) {
                this._value(this.term);
                this.menu.blur();
                return;
            }
            this.menu[direction](event);
        },

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

        _value: function () {
            return this.valueMethod.apply(this.element, arguments);
        },

        _keyEvent: function (keyEvent, event) {
            if (!this.isMultiLine || this.menu.element.is(":visible")) {
                this._move(keyEvent, event);

                // prevents moving cursor to beginning/end of the text field in some browsers
                event.preventDefault();
            }
        }
    });

    $.extend($.ui.autocomplete, {
        escapeRegex: function (value) {
            return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
        },
        filter: function (array, term) {
            var matcher = new RegExp($.ui.autocomplete.escapeRegex(term), "i");
            return $.grep(array, function (value) {
                return matcher.test(value.label || value.value || value);
            });
        }
    });


    // live region extension, adding a `messages` option
    // NOTE: This is an experimental API. We are still investigating
    // a full solution for string manipulation and internationalization.
    $.widget("ui.autocomplete", $.ui.autocomplete, {
        options: {
            messages: {
                noResults: "No search results.",
                results: function (amount) {
                    return amount + (amount > 1 ? " results are" : " result is") +
                        " available, use up and down arrow keys to navigate.";
                }
            }
        },

        __response: function (content) {
            var message;
            this._superApply(arguments);
            if (this.options.disabled || this.cancelSearch) {
                return;
            }
            if (content && content.length) {
                message = this.options.messages.results(content.length);
            } else {
                message = this.options.messages.noResults;
            }
            this.liveRegion.text(message);
        }
    });

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

    $.extend($.ui, { datepicker: { version: "1.10.3" } });

    var PROP_NAME = "datepicker",
        instActive;

    /* Date picker manager.
       Use the singleton instance of this class, $.datepicker, to interact with the date picker.
       Settings for (groups of) date pickers are maintained in an instance object,
       allowing multiple different settings on the same page. */

    function Datepicker() {
        this._curInst = null; // The current instance in use
        this._keyEvent = false; // If the last event was a key event
        this._disabledInputs = []; // List of date picker inputs that have been disabled
        this._datepickerShowing = false; // True if the popup picker is showing , false if not
        this._inDialog = false; // True if showing within a "dialog", false if not
        this._mainDivId = "ui-datepicker-div"; // The ID of the main datepicker division
        this._inlineClass = "ui-datepicker-inline"; // The name of the inline marker class
        this._appendClass = "ui-datepicker-append"; // The name of the append marker class
        this._triggerClass = "ui-datepicker-trigger"; // The name of the trigger marker class
        this._dialogClass = "ui-datepicker-dialog"; // The name of the dialog marker class
        this._disableClass = "ui-datepicker-disabled"; // The name of the disabled covering marker class
        this._unselectableClass = "ui-datepicker-unselectable"; // The name of the unselectable cell marker class
        this._currentClass = "ui-datepicker-current-day"; // The name of the current day marker class
        this._dayOverClass = "ui-datepicker-days-cell-over"; // The name of the day hover marker class
        this.regional = []; // Available regional settings, indexed by language code
        this.regional[""] = { // Default regional settings
            closeText: "Done", // Display text for close link
            prevText: "Prev", // Display text for previous month link
            nextText: "Next", // Display text for next month link
            currentText: "Today", // Display text for current month link
            monthNames: ["January", "February", "March", "April", "May", "June",
                "July", "August", "September", "October", "November", "December"], // Names of months for drop-down and formatting
            monthNamesShort: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"], // For formatting
            dayNames: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], // For formatting
            dayNamesShort: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], // For formatting
            dayNamesMin: ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"], // Column headings for days starting at Sunday
            weekHeader: "Wk", // Column header for week of the year
            dateFormat: "mm/dd/yy", // See format options on parseDate
            firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
            isRTL: false, // True if right-to-left language, false if left-to-right
            showMonthAfterYear: false, // True if the year select precedes month, false for month then year
            yearSuffix: "" // Additional text to append to the year in the month headers
        };
        this._defaults = { // Global defaults for all the date picker instances
            showOn: "focus", // "focus" for popup on focus,
            // "button" for trigger button, or "both" for either
            showAnim: "fadeIn", // Name of jQuery animation for popup
            showOptions: {}, // Options for enhanced animations
            defaultDate: null, // Used when field is blank: actual date,
            // +/-number for offset from today, null for today
            appendText: "", // Display text following the input box, e.g. showing the format
            buttonText: "...", // Text for trigger button
            buttonImage: "", // URL for trigger button image
            buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
            hideIfNoPrevNext: false, // True to hide next/previous month links
            // if not applicable, false to just disable them
            navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
            gotoCurrent: false, // True if today link goes back to current selection instead
            changeMonth: false, // True if month can be selected directly, false if only prev/next
            changeYear: false, // True if year can be selected directly, false if only prev/next
            yearRange: "c-10:c+10", // Range of years to display in drop-down,
            // either relative to today's year (-nn:+nn), relative to currently displayed year
            // (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
            showOtherMonths: false, // True to show dates in other months, false to leave blank
            selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
            showWeek: false, // True to show week of the year, false to not show it
            calculateWeek: this.iso8601Week, // How to calculate the week of the year,
            // takes a Date and returns the number of the week for it
            shortYearCutoff: "+10", // Short year values < this are in the current century,
            // > this are in the previous century,
            // string value starting with "+" for current year + value
            minDate: null, // The earliest selectable date, or null for no limit
            maxDate: null, // The latest selectable date, or null for no limit
            duration: "fast", // Duration of display/closure
            beforeShowDay: null, // Function that takes a date and returns an array with
            // [0] = true if selectable, false if not, [1] = custom CSS class name(s) or "",
            // [2] = cell title (optional), e.g. $.datepicker.noWeekends
            beforeShow: null, // Function that takes an input field and
            // returns a set of custom settings for the date picker
            onSelect: null, // Define a callback function when a date is selected
            onChangeMonthYear: null, // Define a callback function when the month or year is changed
            onClose: null, // Define a callback function when the datepicker is closed
            numberOfMonths: 1, // Number of months to show at a time
            showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
            stepMonths: 1, // Number of months to step back/forward
            stepBigMonths: 12, // Number of months to step back/forward for the big links
            altField: "", // Selector for an alternate field to store selected dates into
            altFormat: "", // The date format to use for the alternate field
            constrainInput: true, // The input is constrained by the current date format
            showButtonPanel: false, // True to show button panel, false to not show it
            autoSize: false, // True to size the input for the date format, false to leave as is
            disabled: false // The initial disabled state
        };
        $.extend(this._defaults, this.regional[""]);
        this.dpDiv = bindHover($("<div id='" + this._mainDivId + "' class='ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>"));
    }

    $.extend(Datepicker.prototype, {
        /* Class name added to elements to indicate already configured with a date picker. */
        markerClassName: "hasDatepicker",

        //Keep track of the maximum number of rows displayed (see #7043)
        maxRows: 4,

        // TODO rename to "widget" when switching to widget factory
        _widgetDatepicker: function () {
            return this.dpDiv;
        },

        /* Override the default settings for all instances of the date picker.
         * @param  settings  object - the new settings to use as defaults (anonymous object)
         * @return the manager object
         */
        setDefaults: function (settings) {
            extendRemove(this._defaults, settings || {});
            return this;
        },

        /* Attach the date picker to a jQuery selection.
         * @param  target	element - the target input field or division or span
         * @param  settings  object - the new settings to use for this date picker instance (anonymous)
         */
        _attachDatepicker: function (target, settings) {
            var nodeName, inline, inst;
            nodeName = target.nodeName.toLowerCase();
            inline = (nodeName === "div" || nodeName === "span");
            if (!target.id) {
                this.uuid += 1;
                target.id = "dp" + this.uuid;
            }
            inst = this._newInst($(target), inline);
            inst.settings = $.extend({}, settings || {});
            if (nodeName === "input") {
                this._connectDatepicker(target, inst);
            } else if (inline) {
                this._inlineDatepicker(target, inst);
            }
        },

        /* Create a new instance object. */
        _newInst: function (target, inline) {
            var id = target[0].id.replace(/([^A-Za-z0-9_\-])/g, "\\\\$1"); // escape jQuery meta chars
            return {
                id: id, input: target, // associated target
                selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
                drawMonth: 0, drawYear: 0, // month being drawn
                inline: inline, // is datepicker inline or not
                dpDiv: (!inline ? this.dpDiv : // presentation div
                bindHover($("<div class='" + this._inlineClass + " ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all'></div>")))
            };
        },

        /* Attach the date picker to an input field. */
        _connectDatepicker: function (target, inst) {
            var input = $(target);
            inst.append = $([]);
            inst.trigger = $([]);
            if (input.hasClass(this.markerClassName)) {
                return;
            }
            this._attachments(input, inst);
            input.addClass(this.markerClassName).keydown(this._doKeyDown).
                keypress(this._doKeyPress).keyup(this._doKeyUp);
            this._autoSize(inst);
            $.data(target, PROP_NAME, inst);
            //If disabled option is true, disable the datepicker once it has been attached to the input (see ticket #5665)
            if (inst.settings.disabled) {
                this._disableDatepicker(target);
            }
        },

        /* Make attachments based on settings. */
        _attachments: function (input, inst) {
            var showOn, buttonText, buttonImage,
                appendText = this._get(inst, "appendText"),
                isRTL = this._get(inst, "isRTL");

            if (inst.append) {
                inst.append.remove();
            }
            if (appendText) {
                inst.append = $("<span class='" + this._appendClass + "'>" + appendText + "</span>");
                input[isRTL ? "before" : "after"](inst.append);
            }

            input.unbind("focus", this._showDatepicker);

            if (inst.trigger) {
                inst.trigger.remove();
            }

            showOn = this._get(inst, "showOn");
            if (showOn === "focus" || showOn === "both") { // pop-up date picker when in the marked field
                input.focus(this._showDatepicker);
            }
            if (showOn === "button" || showOn === "both") { // pop-up date picker when button clicked
                buttonText = this._get(inst, "buttonText");
                buttonImage = this._get(inst, "buttonImage");
                inst.trigger = $(this._get(inst, "buttonImageOnly") ?
                    $("<img/>").addClass(this._triggerClass).
                        attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
                    $("<button type='button'></button>").addClass(this._triggerClass).
                        html(!buttonImage ? buttonText : $("<img/>").attr(
                        { src: buttonImage, alt: buttonText, title: buttonText })));
                input[isRTL ? "before" : "after"](inst.trigger);
                inst.trigger.click(function () {
                    if ($.datepicker._datepickerShowing && $.datepicker._lastInput === input[0]) {
                        $.datepicker._hideDatepicker();
                    } else if ($.datepicker._datepickerShowing && $.datepicker._lastInput !== input[0]) {
                        $.datepicker._hideDatepicker();
                        $.datepicker._showDatepicker(input[0]);
                    } else {
                        $.datepicker._showDatepicker(input[0]);
                    }
                    return false;
                });
            }
        },

        /* Apply the maximum length for the date format. */
        _autoSize: function (inst) {
            if (this._get(inst, "autoSize") && !inst.inline) {
                var findMax, max, maxI, i,
                    date = new Date(2009, 12 - 1, 20), // Ensure double digits
                    dateFormat = this._get(inst, "dateFormat");

                if (dateFormat.match(/[DM]/)) {
                    findMax = function (names) {
                        max = 0;
                        maxI = 0;
                        for (i = 0; i < names.length; i++) {
                            if (names[i].length > max) {
                                max = names[i].length;
                                maxI = i;
                            }
                        }
                        return maxI;
                    };
                    date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
                        "monthNames" : "monthNamesShort"))));
                    date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
                        "dayNames" : "dayNamesShort"))) + 20 - date.getDay());
                }
                inst.input.attr("size", this._formatDate(inst, date).length);
            }
        },

        /* Attach an inline date picker to a div. */
        _inlineDatepicker: function (target, inst) {
            var divSpan = $(target);
            if (divSpan.hasClass(this.markerClassName)) {
                return;
            }
            divSpan.addClass(this.markerClassName).append(inst.dpDiv);
            $.data(target, PROP_NAME, inst);
            this._setDate(inst, this._getDefaultDate(inst), true);
            this._updateDatepicker(inst);
            this._updateAlternate(inst);
            //If disabled option is true, disable the datepicker before showing it (see ticket #5665)
            if (inst.settings.disabled) {
                this._disableDatepicker(target);
            }
            // Set display:block in place of inst.dpDiv.show() which won't work on disconnected elements
            // http://bugs.jqueryui.com/ticket/7552 - A Datepicker created on a detached div has zero height
            inst.dpDiv.css("display", "block");
        },

        /* Pop-up the date picker in a "dialog" box.
         * @param  input element - ignored
         * @param  date	string or Date - the initial date to display
         * @param  onSelect  function - the function to call when a date is selected
         * @param  settings  object - update the dialog date picker instance's settings (anonymous object)
         * @param  pos int[2] - coordinates for the dialog's position within the screen or
         *					event - with x/y coordinates or
         *					leave empty for default (screen centre)
         * @return the manager object
         */
        _dialogDatepicker: function (input, date, onSelect, settings, pos) {
            var id, browserWidth, browserHeight, scrollX, scrollY,
                inst = this._dialogInst; // internal instance

            if (!inst) {
                this.uuid += 1;
                id = "dp" + this.uuid;
                this._dialogInput = $("<input type='text' id='" + id +
                    "' style='position: absolute; top: -100px; width: 0px;'/>");
                this._dialogInput.keydown(this._doKeyDown);
                $("body").append(this._dialogInput);
                inst = this._dialogInst = this._newInst(this._dialogInput, false);
                inst.settings = {};
                $.data(this._dialogInput[0], PROP_NAME, inst);
            }
            extendRemove(inst.settings, settings || {});
            date = (date && date.constructor === Date ? this._formatDate(inst, date) : date);
            this._dialogInput.val(date);

            this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
            if (!this._pos) {
                browserWidth = document.documentElement.clientWidth;
                browserHeight = document.documentElement.clientHeight;
                scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
                scrollY = document.documentElement.scrollTop || document.body.scrollTop;
                this._pos = // should use actual width/height below
                    [(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
            }

            // move input on screen for focus, but hidden behind dialog
            this._dialogInput.css("left", (this._pos[0] + 20) + "px").css("top", this._pos[1] + "px");
            inst.settings.onSelect = onSelect;
            this._inDialog = true;
            this.dpDiv.addClass(this._dialogClass);
            this._showDatepicker(this._dialogInput[0]);
            if ($.blockUI) {
                $.blockUI(this.dpDiv);
            }
            $.data(this._dialogInput[0], PROP_NAME, inst);
            return this;
        },

        /* Detach a datepicker from its control.
         * @param  target	element - the target input field or division or span
         */
        _destroyDatepicker: function (target) {
            var nodeName,
                $target = $(target),
                inst = $.data(target, PROP_NAME);

            if (!$target.hasClass(this.markerClassName)) {
                return;
            }

            nodeName = target.nodeName.toLowerCase();
            $.removeData(target, PROP_NAME);
            if (nodeName === "input") {
                inst.append.remove();
                inst.trigger.remove();
                $target.removeClass(this.markerClassName).
                    unbind("focus", this._showDatepicker).
                    unbind("keydown", this._doKeyDown).
                    unbind("keypress", this._doKeyPress).
                    unbind("keyup", this._doKeyUp);
            } else if (nodeName === "div" || nodeName === "span") {
                $target.removeClass(this.markerClassName).empty();
            }
        },

        /* Enable the date picker to a jQuery selection.
         * @param  target	element - the target input field or division or span
         */
        _enableDatepicker: function (target) {
            var nodeName, inline,
                $target = $(target),
                inst = $.data(target, PROP_NAME);

            if (!$target.hasClass(this.markerClassName)) {
                return;
            }

            nodeName = target.nodeName.toLowerCase();
            if (nodeName === "input") {
                target.disabled = false;
                inst.trigger.filter("button").
                    each(function () { this.disabled = false; }).end().
                    filter("img").css({ opacity: "1.0", cursor: "" });
            } else if (nodeName === "div" || nodeName === "span") {
                inline = $target.children("." + this._inlineClass);
                inline.children().removeClass("ui-state-disabled");
                inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
                    prop("disabled", false);
            }
            this._disabledInputs = $.map(this._disabledInputs,
                function (value) { return (value === target ? null : value); }); // delete entry
        },

        /* Disable the date picker to a jQuery selection.
         * @param  target	element - the target input field or division or span
         */
        _disableDatepicker: function (target) {
            var nodeName, inline,
                $target = $(target),
                inst = $.data(target, PROP_NAME);

            if (!$target.hasClass(this.markerClassName)) {
                return;
            }

            nodeName = target.nodeName.toLowerCase();
            if (nodeName === "input") {
                target.disabled = true;
                inst.trigger.filter("button").
                    each(function () { this.disabled = true; }).end().
                    filter("img").css({ opacity: "0.5", cursor: "default" });
            } else if (nodeName === "div" || nodeName === "span") {
                inline = $target.children("." + this._inlineClass);
                inline.children().addClass("ui-state-disabled");
                inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
                    prop("disabled", true);
            }
            this._disabledInputs = $.map(this._disabledInputs,
                function (value) { return (value === target ? null : value); }); // delete entry
            this._disabledInputs[this._disabledInputs.length] = target;
        },

        /* Is the first field in a jQuery collection disabled as a datepicker?
         * @param  target	element - the target input field or division or span
         * @return boolean - true if disabled, false if enabled
         */
        _isDisabledDatepicker: function (target) {
            if (!target) {
                return false;
            }
            for (var i = 0; i < this._disabledInputs.length; i++) {
                if (this._disabledInputs[i] === target) {
                    return true;
                }
            }
            return false;
        },

        /* Retrieve the instance data for the target control.
         * @param  target  element - the target input field or division or span
         * @return  object - the associated instance data
         * @throws  error if a jQuery problem getting data
         */
        _getInst: function (target) {
            try {
                return $.data(target, PROP_NAME);
            }
            catch (err) {
                throw "Missing instance data for this datepicker";
            }
        },

        /* Update or retrieve the settings for a date picker attached to an input field or division.
         * @param  target  element - the target input field or division or span
         * @param  name	object - the new settings to update or
         *				string - the name of the setting to change or retrieve,
         *				when retrieving also "all" for all instance settings or
         *				"defaults" for all global defaults
         * @param  value   any - the new value for the setting
         *				(omit if above is an object or to retrieve a value)
         */
        _optionDatepicker: function (target, name, value) {
            var settings, date, minDate, maxDate,
                inst = this._getInst(target);

            if (arguments.length === 2 && typeof name === "string") {
                return (name === "defaults" ? $.extend({}, $.datepicker._defaults) :
                    (inst ? (name === "all" ? $.extend({}, inst.settings) :
                    this._get(inst, name)) : null));
            }

            settings = name || {};
            if (typeof name === "string") {
                settings = {};
                settings[name] = value;
            }

            if (inst) {
                if (this._curInst === inst) {
                    this._hideDatepicker();
                }

                date = this._getDateDatepicker(target, true);
                minDate = this._getMinMaxDate(inst, "min");
                maxDate = this._getMinMaxDate(inst, "max");
                extendRemove(inst.settings, settings);
                // reformat the old minDate/maxDate values if dateFormat changes and a new minDate/maxDate isn't provided
                if (minDate !== null && settings.dateFormat !== undefined && settings.minDate === undefined) {
                    inst.settings.minDate = this._formatDate(inst, minDate);
                }
                if (maxDate !== null && settings.dateFormat !== undefined && settings.maxDate === undefined) {
                    inst.settings.maxDate = this._formatDate(inst, maxDate);
                }
                if ("disabled" in settings) {
                    if (settings.disabled) {
                        this._disableDatepicker(target);
                    } else {
                        this._enableDatepicker(target);
                    }
                }
                this._attachments($(target), inst);
                this._autoSize(inst);
                this._setDate(inst, date);
                this._updateAlternate(inst);
                this._updateDatepicker(inst);
            }
        },

        // change method deprecated
        _changeDatepicker: function (target, name, value) {
            this._optionDatepicker(target, name, value);
        },

        /* Redraw the date picker attached to an input field or division.
         * @param  target  element - the target input field or division or span
         */
        _refreshDatepicker: function (target) {
            var inst = this._getInst(target);
            if (inst) {
                this._updateDatepicker(inst);
            }
        },

        /* Set the dates for a jQuery selection.
         * @param  target element - the target input field or division or span
         * @param  date	Date - the new date
         */
        _setDateDatepicker: function (target, date) {
            var inst = this._getInst(target);
            if (inst) {
                this._setDate(inst, date);
                this._updateDatepicker(inst);
                this._updateAlternate(inst);
            }
        },

        /* Get the date(s) for the first entry in a jQuery selection.
         * @param  target element - the target input field or division or span
         * @param  noDefault boolean - true if no default date is to be used
         * @return Date - the current date
         */
        _getDateDatepicker: function (target, noDefault) {
            var inst = this._getInst(target);
            if (inst && !inst.inline) {
                this._setDateFromField(inst, noDefault);
            }
            return (inst ? this._getDate(inst) : null);
        },

        /* Handle keystrokes. */
        _doKeyDown: function (event) {
            var onSelect, dateStr, sel,
                inst = $.datepicker._getInst(event.target),
                handled = true,
                isRTL = inst.dpDiv.is(".ui-datepicker-rtl");

            inst._keyEvent = true;
            if ($.datepicker._datepickerShowing) {
                switch (event.keyCode) {
                    case 9: $.datepicker._hideDatepicker();
                        handled = false;
                        break; // hide on tab out
                    case 13: sel = $("td." + $.datepicker._dayOverClass + ":not(." +
                                        $.datepicker._currentClass + ")", inst.dpDiv);
                        if (sel[0]) {
                            $.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
                        }

                        onSelect = $.datepicker._get(inst, "onSelect");
                        if (onSelect) {
                            dateStr = $.datepicker._formatDate(inst);

                            // trigger custom callback
                            onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);
                        } else {
                            $.datepicker._hideDatepicker();
                        }

                        return false; // don't submit the form
                    case 27: $.datepicker._hideDatepicker();
                        break; // hide on escape
                    case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                                -$.datepicker._get(inst, "stepBigMonths") :
                                -$.datepicker._get(inst, "stepMonths")), "M");
                        break; // previous month/year on page up/+ ctrl
                    case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                                +$.datepicker._get(inst, "stepBigMonths") :
                                +$.datepicker._get(inst, "stepMonths")), "M");
                        break; // next month/year on page down/+ ctrl
                    case 35: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._clearDate(event.target);
                    }
                        handled = event.ctrlKey || event.metaKey;
                        break; // clear on ctrl or command +end
                    case 36: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._gotoToday(event.target);
                    }
                        handled = event.ctrlKey || event.metaKey;
                        break; // current on ctrl or command +home
                    case 37: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), "D");
                    }
                        handled = event.ctrlKey || event.metaKey;
                        // -1 day on ctrl or command +left
                        if (event.originalEvent.altKey) {
                            $.datepicker._adjustDate(event.target, (event.ctrlKey ?
								-$.datepicker._get(inst, "stepBigMonths") :
								-$.datepicker._get(inst, "stepMonths")), "M");
                        }
                        // next month/year on alt +left on Mac
                        break;
                    case 38: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._adjustDate(event.target, -7, "D");
                    }
                        handled = event.ctrlKey || event.metaKey;
                        break; // -1 week on ctrl or command +up
                    case 39: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), "D");
                    }
                        handled = event.ctrlKey || event.metaKey;
                        // +1 day on ctrl or command +right
                        if (event.originalEvent.altKey) {
                            $.datepicker._adjustDate(event.target, (event.ctrlKey ?
								+$.datepicker._get(inst, "stepBigMonths") :
								+$.datepicker._get(inst, "stepMonths")), "M");
                        }
                        // next month/year on alt +right
                        break;
                    case 40: if (event.ctrlKey || event.metaKey) {
                        $.datepicker._adjustDate(event.target, +7, "D");
                    }
                        handled = event.ctrlKey || event.metaKey;
                        break; // +1 week on ctrl or command +down
                    default: handled = false;
                }
            } else if (event.keyCode === 36 && event.ctrlKey) { // display the date picker on ctrl+home
                $.datepicker._showDatepicker(this);
            } else {
                handled = false;
            }

            if (handled) {
                event.preventDefault();
                event.stopPropagation();
            }
        },

        /* Filter entered characters - based on date format. */
        _doKeyPress: function (event) {
            var chars, chr,
                inst = $.datepicker._getInst(event.target);

            if ($.datepicker._get(inst, "constrainInput")) {
                chars = $.datepicker._possibleChars($.datepicker._get(inst, "dateFormat"));
                chr = String.fromCharCode(event.charCode == null ? event.keyCode : event.charCode);
                return event.ctrlKey || event.metaKey || (chr < " " || !chars || chars.indexOf(chr) > -1);
            }
        },

        /* Synchronise manual entry and field/alternate field. */
        _doKeyUp: function (event) {
            var date,
                inst = $.datepicker._getInst(event.target);

            if (inst.input.val() !== inst.lastVal) {
                try {
                    date = $.datepicker.parseDate($.datepicker._get(inst, "dateFormat"),
                        (inst.input ? inst.input.val() : null),
                        $.datepicker._getFormatConfig(inst));

                    if (date) { // only if valid
                        $.datepicker._setDateFromField(inst);
                        $.datepicker._updateAlternate(inst);
                        $.datepicker._updateDatepicker(inst);
                    }
                }
                catch (err) {
                }
            }
            return true;
        },

        /* Pop-up the date picker for a given input field.
         * If false returned from beforeShow event handler do not show.
         * @param  input  element - the input field attached to the date picker or
         *					event - if triggered by focus
         */
        _showDatepicker: function (input) {
            input = input.target || input;
            if (input.nodeName.toLowerCase() !== "input") { // find from button/image trigger
                input = $("input", input.parentNode)[0];
            }

            if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput === input) { // already here
                return;
            }

            var inst, beforeShow, beforeShowSettings, isFixed,
                offset, showAnim, duration;

            inst = $.datepicker._getInst(input);
            if ($.datepicker._curInst && $.datepicker._curInst !== inst) {
                $.datepicker._curInst.dpDiv.stop(true, true);
                if (inst && $.datepicker._datepickerShowing) {
                    $.datepicker._hideDatepicker($.datepicker._curInst.input[0]);
                }
            }

            beforeShow = $.datepicker._get(inst, "beforeShow");
            beforeShowSettings = beforeShow ? beforeShow.apply(input, [input, inst]) : {};
            if (beforeShowSettings === false) {
                return;
            }
            extendRemove(inst.settings, beforeShowSettings);

            inst.lastVal = null;
            $.datepicker._lastInput = input;
            $.datepicker._setDateFromField(inst);

            if ($.datepicker._inDialog) { // hide cursor
                input.value = "";
            }
            if (!$.datepicker._pos) { // position below input
                $.datepicker._pos = $.datepicker._findPos(input);
                $.datepicker._pos[1] += input.offsetHeight; // add the height
            }

            isFixed = false;
            $(input).parents().each(function () {
                isFixed |= $(this).css("position") === "fixed";
                return !isFixed;
            });

            offset = { left: $.datepicker._pos[0], top: $.datepicker._pos[1] };
            $.datepicker._pos = null;
            //to avoid flashes on Firefox
            inst.dpDiv.empty();
            // determine sizing offscreen
            inst.dpDiv.css({ position: "absolute", display: "block", top: "-1000px" });
            $.datepicker._updateDatepicker(inst);
            // fix width for dynamic number of date pickers
            // and adjust position before showing
            offset = $.datepicker._checkOffset(inst, offset, isFixed);
            inst.dpDiv.css({
                position: ($.datepicker._inDialog && $.blockUI ?
                    "static" : (isFixed ? "fixed" : "absolute")), display: "none",
                left: offset.left + "px", top: offset.top + "px"
            });

            if (!inst.inline) {
                showAnim = $.datepicker._get(inst, "showAnim");
                duration = $.datepicker._get(inst, "duration");
                inst.dpDiv.zIndex($(input).zIndex() + 1);
                $.datepicker._datepickerShowing = true;

                if ($.effects && $.effects.effect[showAnim]) {
                    inst.dpDiv.show(showAnim, $.datepicker._get(inst, "showOptions"), duration);
                } else {
                    inst.dpDiv[showAnim || "show"](showAnim ? duration : null);
                }

                if ($.datepicker._shouldFocusInput(inst)) {
                    inst.input.focus();
                }

                $.datepicker._curInst = inst;
            }
        },

        /* Generate the date picker content. */
        _updateDatepicker: function (inst) {
            this.maxRows = 4; //Reset the max number of rows being displayed (see #7043)
            instActive = inst; // for delegate hover events
            inst.dpDiv.empty().append(this._generateHTML(inst));
            this._attachHandlers(inst);
            inst.dpDiv.find("." + this._dayOverClass + " a").mouseover();

            var origyearshtml,
                numMonths = this._getNumberOfMonths(inst),
                cols = numMonths[1],
                width = 17;

            inst.dpDiv.removeClass("ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4").width("");
            if (cols > 1) {
                inst.dpDiv.addClass("ui-datepicker-multi-" + cols).css("width", (width * cols) + "em");
            }
            inst.dpDiv[(numMonths[0] !== 1 || numMonths[1] !== 1 ? "add" : "remove") +
                "Class"]("ui-datepicker-multi");
            inst.dpDiv[(this._get(inst, "isRTL") ? "add" : "remove") +
                "Class"]("ui-datepicker-rtl");

            if (inst === $.datepicker._curInst && $.datepicker._datepickerShowing && $.datepicker._shouldFocusInput(inst)) {
                inst.input.focus();
            }

            // deffered render of the years select (to avoid flashes on Firefox)
            if (inst.yearshtml) {
                origyearshtml = inst.yearshtml;
                setTimeout(function () {
                    //assure that inst.yearshtml didn't change.
                    if (origyearshtml === inst.yearshtml && inst.yearshtml) {
                        inst.dpDiv.find("select.ui-datepicker-year:first").replaceWith(inst.yearshtml);
                    }
                    origyearshtml = inst.yearshtml = null;
                }, 0);
            }
        },

        // #6694 - don't focus the input if it's already focused
        // this breaks the change event in IE
        // Support: IE and jQuery <1.9
        _shouldFocusInput: function (inst) {
            return inst.input && inst.input.is(":visible") && !inst.input.is(":disabled") && !inst.input.is(":focus");
        },

        /* Check positioning to remain on screen. */
        _checkOffset: function (inst, offset, isFixed) {
            var dpWidth = inst.dpDiv.outerWidth(),
                dpHeight = inst.dpDiv.outerHeight(),
                inputWidth = inst.input ? inst.input.outerWidth() : 0,
                inputHeight = inst.input ? inst.input.outerHeight() : 0,
                viewWidth = document.documentElement.clientWidth + (isFixed ? 0 : $(document).scrollLeft()),
                viewHeight = document.documentElement.clientHeight + (isFixed ? 0 : $(document).scrollTop());

            offset.left -= (this._get(inst, "isRTL") ? (dpWidth - inputWidth) : 0);
            offset.left -= (isFixed && offset.left === inst.input.offset().left) ? $(document).scrollLeft() : 0;
            offset.top -= (isFixed && offset.top === (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;

            // now check if datepicker is showing outside window viewport - move to a better place if so.
            offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
                Math.abs(offset.left + dpWidth - viewWidth) : 0);
            offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
                Math.abs(dpHeight + inputHeight) : 0);

            return offset;
        },

        /* Find an object's position on the screen. */
        _findPos: function (obj) {
            var position,
                inst = this._getInst(obj),
                isRTL = this._get(inst, "isRTL");

            while (obj && (obj.type === "hidden" || obj.nodeType !== 1 || $.expr.filters.hidden(obj))) {
                obj = obj[isRTL ? "previousSibling" : "nextSibling"];
            }

            position = $(obj).offset();
            return [position.left, position.top];
        },

        /* Hide the date picker from view.
         * @param  input  element - the input field attached to the date picker
         */
        _hideDatepicker: function (input) {
            var showAnim, duration, postProcess, onClose,
                inst = this._curInst;

            if (!inst || (input && inst !== $.data(input, PROP_NAME))) {
                return;
            }

            if (this._datepickerShowing) {
                showAnim = this._get(inst, "showAnim");
                duration = this._get(inst, "duration");
                postProcess = function () {
                    $.datepicker._tidyDialog(inst);
                };

                // DEPRECATED: after BC for 1.8.x $.effects[ showAnim ] is not needed
                if ($.effects && ($.effects.effect[showAnim] || $.effects[showAnim])) {
                    inst.dpDiv.hide(showAnim, $.datepicker._get(inst, "showOptions"), duration, postProcess);
                } else {
                    inst.dpDiv[(showAnim === "slideDown" ? "slideUp" :
                        (showAnim === "fadeIn" ? "fadeOut" : "hide"))]((showAnim ? duration : null), postProcess);
                }

                if (!showAnim) {
                    postProcess();
                }
                this._datepickerShowing = false;

                onClose = this._get(inst, "onClose");
                if (onClose) {
                    onClose.apply((inst.input ? inst.input[0] : null), [(inst.input ? inst.input.val() : ""), inst]);
                }

                this._lastInput = null;
                if (this._inDialog) {
                    this._dialogInput.css({ position: "absolute", left: "0", top: "-100px" });
                    if ($.blockUI) {
                        $.unblockUI();
                        $("body").append(this.dpDiv);
                    }
                }
                this._inDialog = false;
            }
        },

        /* Tidy up after a dialog display. */
        _tidyDialog: function (inst) {
            inst.dpDiv.removeClass(this._dialogClass).unbind(".ui-datepicker-calendar");
        },

        /* Close date picker if clicked elsewhere. */
        _checkExternalClick: function (event) {
            if (!$.datepicker._curInst) {
                return;
            }

            var $target = $(event.target),
                inst = $.datepicker._getInst($target[0]);

            if ((($target[0].id !== $.datepicker._mainDivId &&
                    $target.parents("#" + $.datepicker._mainDivId).length === 0 &&
                    !$target.hasClass($.datepicker.markerClassName) &&
                    !$target.closest("." + $.datepicker._triggerClass).length &&
                    $.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))) ||
                ($target.hasClass($.datepicker.markerClassName) && $.datepicker._curInst !== inst)) {
                $.datepicker._hideDatepicker();
            }
        },

        /* Adjust one of the date sub-fields. */
        _adjustDate: function (id, offset, period) {
            var target = $(id),
                inst = this._getInst(target[0]);

            if (this._isDisabledDatepicker(target[0])) {
                return;
            }
            this._adjustInstDate(inst, offset +
                (period === "M" ? this._get(inst, "showCurrentAtPos") : 0), // undo positioning
                period);
            this._updateDatepicker(inst);
        },

        /* Action for current link. */
        _gotoToday: function (id) {
            var date,
                target = $(id),
                inst = this._getInst(target[0]);

            if (this._get(inst, "gotoCurrent") && inst.currentDay) {
                inst.selectedDay = inst.currentDay;
                inst.drawMonth = inst.selectedMonth = inst.currentMonth;
                inst.drawYear = inst.selectedYear = inst.currentYear;
            } else {
                date = new Date();
                inst.selectedDay = date.getDate();
                inst.drawMonth = inst.selectedMonth = date.getMonth();
                inst.drawYear = inst.selectedYear = date.getFullYear();
            }
            this._notifyChange(inst);
            this._adjustDate(target);
        },

        /* Action for selecting a new month/year. */
        _selectMonthYear: function (id, select, period) {
            var target = $(id),
                inst = this._getInst(target[0]);

            inst["selected" + (period === "M" ? "Month" : "Year")] =
            inst["draw" + (period === "M" ? "Month" : "Year")] =
                parseInt(select.options[select.selectedIndex].value, 10);

            this._notifyChange(inst);
            this._adjustDate(target);
        },

        /* Action for selecting a day. */
        _selectDay: function (id, month, year, td) {
            var inst,
                target = $(id);

            if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
                return;
            }

            inst = this._getInst(target[0]);
            inst.selectedDay = inst.currentDay = $("a", td).html();
            inst.selectedMonth = inst.currentMonth = month;
            inst.selectedYear = inst.currentYear = year;
            this._selectDate(id, this._formatDate(inst,
                inst.currentDay, inst.currentMonth, inst.currentYear));
        },

        /* Erase the input field and hide the date picker. */
        _clearDate: function (id) {
            var target = $(id);
            this._selectDate(target, "");
        },

        /* Update the input field with the selected date. */
        _selectDate: function (id, dateStr) {
            var onSelect,
                target = $(id),
                inst = this._getInst(target[0]);

            dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
            if (inst.input) {
                inst.input.val(dateStr);
            }
            this._updateAlternate(inst);

            onSelect = this._get(inst, "onSelect");
            if (onSelect) {
                onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
            } else if (inst.input) {
                inst.input.trigger("change"); // fire the change event
            }

            if (inst.inline) {
                this._updateDatepicker(inst);
            } else {
                this._hideDatepicker();
                this._lastInput = inst.input[0];
                if (typeof (inst.input[0]) !== "object") {
                    inst.input.focus(); // restore focus
                }
                this._lastInput = null;
            }
        },

        /* Update any alternate field to synchronise with the main field. */
        _updateAlternate: function (inst) {
            var altFormat, date, dateStr,
                altField = this._get(inst, "altField");

            if (altField) { // update alternate field too
                altFormat = this._get(inst, "altFormat") || this._get(inst, "dateFormat");
                date = this._getDate(inst);
                dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
                $(altField).each(function () { $(this).val(dateStr); });
            }
        },

        /* Set as beforeShowDay function to prevent selection of weekends.
         * @param  date  Date - the date to customise
         * @return [boolean, string] - is this date selectable?, what is its CSS class?
         */
        noWeekends: function (date) {
            var day = date.getDay();
            return [(day > 0 && day < 6), ""];
        },

        /* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
         * @param  date  Date - the date to get the week for
         * @return  number - the number of the week within the year that contains this date
         */
        iso8601Week: function (date) {
            var time,
                checkDate = new Date(date.getTime());

            // Find Thursday of this week starting on Monday
            checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));

            time = checkDate.getTime();
            checkDate.setMonth(0); // Compare with Jan 1
            checkDate.setDate(1);
            return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
        },

        /* Parse a string value into a date object.
         * See formatDate below for the possible formats.
         *
         * @param  format string - the expected format of the date
         * @param  value string - the date in the above format
         * @param  settings Object - attributes include:
         *					shortYearCutoff  number - the cutoff year for determining the century (optional)
         *					dayNamesShort	string[7] - abbreviated names of the days from Sunday (optional)
         *					dayNames		string[7] - names of the days from Sunday (optional)
         *					monthNamesShort string[12] - abbreviated names of the months (optional)
         *					monthNames		string[12] - names of the months (optional)
         * @return  Date - the extracted date value or null if value is blank
         */
        parseDate: function (format, value, settings) {
            if (format == null || value == null) {
                throw "Invalid arguments";
            }

            value = (typeof value === "object" ? value.toString() : value + "");
            if (value === "") {
                return null;
            }

            var iFormat, dim, extra,
                iValue = 0,
                shortYearCutoffTemp = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff,
                shortYearCutoff = (typeof shortYearCutoffTemp !== "string" ? shortYearCutoffTemp :
                    new Date().getFullYear() % 100 + parseInt(shortYearCutoffTemp, 10)),
                dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort,
                dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames,
                monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort,
                monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames,
                year = -1,
                month = -1,
                day = -1,
                doy = -1,
                literal = false,
                date,
                // Check whether a format character is doubled
                lookAhead = function (match) {
                    var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
                    if (matches) {
                        iFormat++;
                    }
                    return matches;
                },
                // Extract a number from the string value
                getNumber = function (match) {
                    var isDoubled = lookAhead(match),
                        size = (match === "@" ? 14 : (match === "!" ? 20 :
                        (match === "y" && isDoubled ? 4 : (match === "o" ? 3 : 2)))),
                        digits = new RegExp("^\\d{1," + size + "}"),
                        num = value.substring(iValue).match(digits);
                    if (!num) {
                        throw "Missing number at position " + iValue;
                    }
                    iValue += num[0].length;
                    return parseInt(num[0], 10);
                },
                // Extract a name from the string value and convert to an index
                getName = function (match, shortNames, longNames) {
                    var index = -1,
                        names = $.map(lookAhead(match) ? longNames : shortNames, function (v, k) {
                            return [[k, v]];
                        }).sort(function (a, b) {
                            return -(a[1].length - b[1].length);
                        });

                    $.each(names, function (i, pair) {
                        var name = pair[1];
                        if (value.substr(iValue, name.length).toLowerCase() === name.toLowerCase()) {
                            index = pair[0];
                            iValue += name.length;
                            return false;
                        }
                    });
                    if (index !== -1) {
                        return index + 1;
                    } else {
                        throw "Unknown name at position " + iValue;
                    }
                },
                // Confirm that a literal character matches the string value
                checkLiteral = function () {
                    if (value.charAt(iValue) !== format.charAt(iFormat)) {
                        throw "Unexpected literal at position " + iValue;
                    }
                    iValue++;
                };

            for (iFormat = 0; iFormat < format.length; iFormat++) {
                if (literal) {
                    if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
                        literal = false;
                    } else {
                        checkLiteral();
                    }
                } else {
                    switch (format.charAt(iFormat)) {
                        case "d":
                            day = getNumber("d");
                            break;
                        case "D":
                            getName("D", dayNamesShort, dayNames);
                            break;
                        case "o":
                            doy = getNumber("o");
                            break;
                        case "m":
                            month = getNumber("m");
                            break;
                        case "M":
                            month = getName("M", monthNamesShort, monthNames);
                            break;
                        case "y":
                            year = getNumber("y");
                            break;
                        case "@":
                            date = new Date(getNumber("@"));
                            year = date.getFullYear();
                            month = date.getMonth() + 1;
                            day = date.getDate();
                            break;
                        case "!":
                            date = new Date((getNumber("!") - this._ticksTo1970) / 10000);
                            year = date.getFullYear();
                            month = date.getMonth() + 1;
                            day = date.getDate();
                            break;
                        case "'":
                            if (lookAhead("'")) {
                                checkLiteral();
                            } else {
                                literal = true;
                            }
                            break;
                        default:
                            checkLiteral();
                    }
                }
            }

            if (iValue < value.length) {
                extra = value.substr(iValue);
                if (!/^\s+/.test(extra)) {
                    throw "Extra/unparsed characters found in date: " + extra;
                }
            }

            if (year === -1) {
                year = new Date().getFullYear();
            } else if (year < 100) {
                year += new Date().getFullYear() - new Date().getFullYear() % 100 +
                    (year <= shortYearCutoff ? 0 : -100);
            }

            if (doy > -1) {
                month = 1;
                day = doy;
                do {
                    dim = this._getDaysInMonth(year, month - 1);
                    if (day <= dim) {
                        break;
                    }
                    month++;
                    day -= dim;
                } while (true);
            }

            date = this._daylightSavingAdjust(new Date(year, month - 1, day));
            if (date.getFullYear() !== year || date.getMonth() + 1 !== month || date.getDate() !== day) {
                throw "Invalid date"; // E.g. 31/02/00
            }
            return date;
        },

        /* Standard date formats. */
        ATOM: "yy-mm-dd", // RFC 3339 (ISO 8601)
        COOKIE: "D, dd M yy",
        ISO_8601: "yy-mm-dd",
        RFC_822: "D, d M y",
        RFC_850: "DD, dd-M-y",
        RFC_1036: "D, d M y",
        RFC_1123: "D, d M yy",
        RFC_2822: "D, d M yy",
        RSS: "D, d M y", // RFC 822
        TICKS: "!",
        TIMESTAMP: "@",
        W3C: "yy-mm-dd", // ISO 8601

        _ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
            Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),

        /* Format a date object into a string value.
         * The format can be combinations of the following:
         * d  - day of month (no leading zero)
         * dd - day of month (two digit)
         * o  - day of year (no leading zeros)
         * oo - day of year (three digit)
         * D  - day name short
         * DD - day name long
         * m  - month of year (no leading zero)
         * mm - month of year (two digit)
         * M  - month name short
         * MM - month name long
         * y  - year (two digit)
         * yy - year (four digit)
         * @ - Unix timestamp (ms since 01/01/1970)
         * ! - Windows ticks (100ns since 01/01/0001)
         * "..." - literal text
         * '' - single quote
         *
         * @param  format string - the desired format of the date
         * @param  date Date - the date value to format
         * @param  settings Object - attributes include:
         *					dayNamesShort	string[7] - abbreviated names of the days from Sunday (optional)
         *					dayNames		string[7] - names of the days from Sunday (optional)
         *					monthNamesShort string[12] - abbreviated names of the months (optional)
         *					monthNames		string[12] - names of the months (optional)
         * @return  string - the date in the above format
         */
        formatDate: function (format, date, settings) {
            if (!date) {
                return "";
            }

            var iFormat,
                dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort,
                dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames,
                monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort,
                monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames,
                // Check whether a format character is doubled
                lookAhead = function (match) {
                    var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
                    if (matches) {
                        iFormat++;
                    }
                    return matches;
                },
                // Format a number, with leading zero if necessary
                formatNumber = function (match, value, len) {
                    var num = "" + value;
                    if (lookAhead(match)) {
                        while (num.length < len) {
                            num = "0" + num;
                        }
                    }
                    return num;
                },
                // Format a name, short or long as requested
                formatName = function (match, value, shortNames, longNames) {
                    return (lookAhead(match) ? longNames[value] : shortNames[value]);
                },
                output = "",
                literal = false;

            if (date) {
                for (iFormat = 0; iFormat < format.length; iFormat++) {
                    if (literal) {
                        if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
                            literal = false;
                        } else {
                            output += format.charAt(iFormat);
                        }
                    } else {
                        switch (format.charAt(iFormat)) {
                            case "d":
                                output += formatNumber("d", date.getDate(), 2);
                                break;
                            case "D":
                                output += formatName("D", date.getDay(), dayNamesShort, dayNames);
                                break;
                            case "o":
                                output += formatNumber("o",
                                    Math.round((new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000), 3);
                                break;
                            case "m":
                                output += formatNumber("m", date.getMonth() + 1, 2);
                                break;
                            case "M":
                                output += formatName("M", date.getMonth(), monthNamesShort, monthNames);
                                break;
                            case "y":
                                output += (lookAhead("y") ? date.getFullYear() :
                                    (date.getYear() % 100 < 10 ? "0" : "") + date.getYear() % 100);
                                break;
                            case "@":
                                output += date.getTime();
                                break;
                            case "!":
                                output += date.getTime() * 10000 + this._ticksTo1970;
                                break;
                            case "'":
                                if (lookAhead("'")) {
                                    output += "'";
                                } else {
                                    literal = true;
                                }
                                break;
                            default:
                                output += format.charAt(iFormat);
                        }
                    }
                }
            }
            return output;
        },

        /* Extract all possible characters from the date format. */
        _possibleChars: function (format) {
            var iFormat,
                chars = "",
                literal = false,
                // Check whether a format character is doubled
                lookAhead = function (match) {
                    var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) === match);
                    if (matches) {
                        iFormat++;
                    }
                    return matches;
                };

            for (iFormat = 0; iFormat < format.length; iFormat++) {
                if (literal) {
                    if (format.charAt(iFormat) === "'" && !lookAhead("'")) {
                        literal = false;
                    } else {
                        chars += format.charAt(iFormat);
                    }
                } else {
                    switch (format.charAt(iFormat)) {
                        case "d": case "m": case "y": case "@":
                            chars += "0123456789";
                            break;
                        case "D": case "M":
                            return null; // Accept anything
                        case "'":
                            if (lookAhead("'")) {
                                chars += "'";
                            } else {
                                literal = true;
                            }
                            break;
                        default:
                            chars += format.charAt(iFormat);
                    }
                }
            }
            return chars;
        },

        /* Get a setting value, defaulting if necessary. */
        _get: function (inst, name) {
            return inst.settings[name] !== undefined ?
                inst.settings[name] : this._defaults[name];
        },

        /* Parse existing date and initialise date picker. */
        _setDateFromField: function (inst, noDefault) {
            if (inst.input.val() === inst.lastVal) {
                return;
            }

            var dateFormat = this._get(inst, "dateFormat"),
                dates = inst.lastVal = inst.input ? inst.input.val() : null,
                defaultDate = this._getDefaultDate(inst),
                date = defaultDate,
                settings = this._getFormatConfig(inst);

            try {
                date = this.parseDate(dateFormat, dates, settings) || defaultDate;
            } catch (event) {
                dates = (noDefault ? "" : dates);
            }
            inst.selectedDay = date.getDate();
            inst.drawMonth = inst.selectedMonth = date.getMonth();
            inst.drawYear = inst.selectedYear = date.getFullYear();
            inst.currentDay = (dates ? date.getDate() : 0);
            inst.currentMonth = (dates ? date.getMonth() : 0);
            inst.currentYear = (dates ? date.getFullYear() : 0);
            this._adjustInstDate(inst);
        },

        /* Retrieve the default date shown on opening. */
        _getDefaultDate: function (inst) {
            return this._restrictMinMax(inst,
                this._determineDate(inst, this._get(inst, "defaultDate"), new Date()));
        },

        /* A date may be specified as an exact value or a relative one. */
        _determineDate: function (inst, date, defaultDate) {
            var offsetNumeric = function (offset) {
                var date = new Date();
                date.setDate(date.getDate() + offset);
                return date;
            },
                offsetString = function (offset) {
                    try {
                        return $.datepicker.parseDate($.datepicker._get(inst, "dateFormat"),
                            offset, $.datepicker._getFormatConfig(inst));
                    }
                    catch (e) {
                        // Ignore
                    }

                    var date = (offset.toLowerCase().match(/^c/) ?
                        $.datepicker._getDate(inst) : null) || new Date(),
                        year = date.getFullYear(),
                        month = date.getMonth(),
                        day = date.getDate(),
                        pattern = /([+\-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g,
                        matches = pattern.exec(offset);

                    while (matches) {
                        switch (matches[2] || "d") {
                            case "d": case "D":
                                day += parseInt(matches[1], 10); break;
                            case "w": case "W":
                                day += parseInt(matches[1], 10) * 7; break;
                            case "m": case "M":
                                month += parseInt(matches[1], 10);
                                day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
                                break;
                            case "y": case "Y":
                                year += parseInt(matches[1], 10);
                                day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
                                break;
                        }
                        matches = pattern.exec(offset);
                    }
                    return new Date(year, month, day);
                },
                newDate = (date == null || date === "" ? defaultDate : (typeof date === "string" ? offsetString(date) :
                    (typeof date === "number" ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : new Date(date.getTime()))));

            newDate = (newDate && newDate.toString() === "Invalid Date" ? defaultDate : newDate);
            if (newDate) {
                newDate.setHours(0);
                newDate.setMinutes(0);
                newDate.setSeconds(0);
                newDate.setMilliseconds(0);
            }
            return this._daylightSavingAdjust(newDate);
        },

        /* Handle switch to/from daylight saving.
         * Hours may be non-zero on daylight saving cut-over:
         * > 12 when midnight changeover, but then cannot generate
         * midnight datetime, so jump to 1AM, otherwise reset.
         * @param  date  (Date) the date to check
         * @return  (Date) the corrected date
         */
        _daylightSavingAdjust: function (date) {
            if (!date) {
                return null;
            }
            date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
            return date;
        },

        /* Set the date(s) directly. */
        _setDate: function (inst, date, noChange) {
            var clear = !date,
                origMonth = inst.selectedMonth,
                origYear = inst.selectedYear,
                newDate = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));

            inst.selectedDay = inst.currentDay = newDate.getDate();
            inst.drawMonth = inst.selectedMonth = inst.currentMonth = newDate.getMonth();
            inst.drawYear = inst.selectedYear = inst.currentYear = newDate.getFullYear();
            if ((origMonth !== inst.selectedMonth || origYear !== inst.selectedYear) && !noChange) {
                this._notifyChange(inst);
            }
            this._adjustInstDate(inst);
            if (inst.input) {
                inst.input.val(clear ? "" : this._formatDate(inst));
            }
        },

        /* Retrieve the date(s) directly. */
        _getDate: function (inst) {
            var startDate = (!inst.currentYear || (inst.input && inst.input.val() === "") ? null :
                this._daylightSavingAdjust(new Date(
                inst.currentYear, inst.currentMonth, inst.currentDay)));
            return startDate;
        },

        /* Attach the onxxx handlers.  These are declared statically so
         * they work with static code transformers like Caja.
         */
        _attachHandlers: function (inst) {
            var stepMonths = this._get(inst, "stepMonths"),
                id = "#" + inst.id.replace(/\\\\/g, "\\");
            inst.dpDiv.find("[data-handler]").map(function () {
                var handler = {
                    prev: function () {
                        $.datepicker._adjustDate(id, -stepMonths, "M");
                    },
                    next: function () {
                        $.datepicker._adjustDate(id, +stepMonths, "M");
                    },
                    hide: function () {
                        $.datepicker._hideDatepicker();
                    },
                    today: function () {
                        $.datepicker._gotoToday(id);
                    },
                    selectDay: function () {
                        $.datepicker._selectDay(id, +this.getAttribute("data-month"), +this.getAttribute("data-year"), this);
                        return false;
                    },
                    selectMonth: function () {
                        $.datepicker._selectMonthYear(id, this, "M");
                        return false;
                    },
                    selectYear: function () {
                        $.datepicker._selectMonthYear(id, this, "Y");
                        return false;
                    }
                };
                $(this).bind(this.getAttribute("data-event"), handler[this.getAttribute("data-handler")]);
            });
        },

        /* Generate the HTML for the current state of the date picker. */
        _generateHTML: function (inst) {
            var maxDraw, prevText, prev, nextText, next, currentText, gotoDate,
                controls, buttonPanel, firstDay, showWeek, dayNames, dayNamesMin,
                monthNames, monthNamesShort, beforeShowDay, showOtherMonths,
                selectOtherMonths, defaultDate, html, dow, row, group, col, selectedDate,
                cornerClass, calender, thead, day, daysInMonth, leadDays, curRows, numRows,
                printDate, dRow, tbody, daySettings, otherMonth, unselectable,
                tempDate = new Date(),
                today = this._daylightSavingAdjust(
                    new Date(tempDate.getFullYear(), tempDate.getMonth(), tempDate.getDate())), // clear time
                isRTL = this._get(inst, "isRTL"),
                showButtonPanel = this._get(inst, "showButtonPanel"),
                hideIfNoPrevNext = this._get(inst, "hideIfNoPrevNext"),
                navigationAsDateFormat = this._get(inst, "navigationAsDateFormat"),
                numMonths = this._getNumberOfMonths(inst),
                showCurrentAtPos = this._get(inst, "showCurrentAtPos"),
                stepMonths = this._get(inst, "stepMonths"),
                isMultiMonth = (numMonths[0] !== 1 || numMonths[1] !== 1),
                currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
                    new Date(inst.currentYear, inst.currentMonth, inst.currentDay))),
                minDate = this._getMinMaxDate(inst, "min"),
                maxDate = this._getMinMaxDate(inst, "max"),
                drawMonth = inst.drawMonth - showCurrentAtPos,
                drawYear = inst.drawYear;

            if (drawMonth < 0) {
                drawMonth += 12;
                drawYear--;
            }
            if (maxDate) {
                maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
                    maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
                maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
                while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
                    drawMonth--;
                    if (drawMonth < 0) {
                        drawMonth = 11;
                        drawYear--;
                    }
                }
            }
            inst.drawMonth = drawMonth;
            inst.drawYear = drawYear;

            prevText = this._get(inst, "prevText");
            prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
                this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
                this._getFormatConfig(inst)));

            prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
                "<a class='ui-datepicker-prev ui-corner-all' data-handler='prev' data-event='click'" +
                " title='" + prevText + "'><span class='ui-icon ui-icon-circle-triangle-" + (isRTL ? "e" : "w") + "'>" + prevText + "</span></a>" :
                (hideIfNoPrevNext ? "" : "<a class='ui-datepicker-prev ui-corner-all ui-state-disabled' title='" + prevText + "'><span class='ui-icon ui-icon-circle-triangle-" + (isRTL ? "e" : "w") + "'>" + prevText + "</span></a>"));

            nextText = this._get(inst, "nextText");
            nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
                this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
                this._getFormatConfig(inst)));

            next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
                "<a class='ui-datepicker-next ui-corner-all' data-handler='next' data-event='click'" +
                " title='" + nextText + "'><span class='ui-icon ui-icon-circle-triangle-" + (isRTL ? "w" : "e") + "'>" + nextText + "</span></a>" :
                (hideIfNoPrevNext ? "" : "<a class='ui-datepicker-next ui-corner-all ui-state-disabled' title='" + nextText + "'><span class='ui-icon ui-icon-circle-triangle-" + (isRTL ? "w" : "e") + "'>" + nextText + "</span></a>"));

            currentText = this._get(inst, "currentText");
            gotoDate = (this._get(inst, "gotoCurrent") && inst.currentDay ? currentDate : today);
            currentText = (!navigationAsDateFormat ? currentText :
                this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));

            controls = (!inst.inline ? "<button type='button' class='ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all' data-handler='hide' data-event='click'>" +
                this._get(inst, "closeText") + "</button>" : "");

            buttonPanel = (showButtonPanel) ? "<div class='ui-datepicker-buttonpane ui-widget-content'>" + (isRTL ? controls : "") +
                (this._isInRange(inst, gotoDate) ? "<button type='button' class='ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all' data-handler='today' data-event='click'" +
                ">" + currentText + "</button>" : "") + (isRTL ? "" : controls) + "</div>" : "";

            firstDay = parseInt(this._get(inst, "firstDay"), 10);
            firstDay = (isNaN(firstDay) ? 0 : firstDay);

            showWeek = this._get(inst, "showWeek");
            dayNames = this._get(inst, "dayNames");
            dayNamesMin = this._get(inst, "dayNamesMin");
            monthNames = this._get(inst, "monthNames");
            monthNamesShort = this._get(inst, "monthNamesShort");
            beforeShowDay = this._get(inst, "beforeShowDay");
            showOtherMonths = this._get(inst, "showOtherMonths");
            selectOtherMonths = this._get(inst, "selectOtherMonths");
            defaultDate = this._getDefaultDate(inst);
            html = "";
            dow;
            for (row = 0; row < numMonths[0]; row++) {
                group = "";
                this.maxRows = 4;
                for (col = 0; col < numMonths[1]; col++) {
                    selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
                    cornerClass = " ui-corner-all";
                    calender = "";
                    if (isMultiMonth) {
                        calender += "<div class='ui-datepicker-group";
                        if (numMonths[1] > 1) {
                            switch (col) {
                                case 0: calender += " ui-datepicker-group-first";
                                    cornerClass = " ui-corner-" + (isRTL ? "right" : "left"); break;
                                case numMonths[1] - 1: calender += " ui-datepicker-group-last";
                                    cornerClass = " ui-corner-" + (isRTL ? "left" : "right"); break;
                                default: calender += " ui-datepicker-group-middle"; cornerClass = ""; break;
                            }
                        }
                        calender += "'>";
                    }
                    calender += "<div class='ui-datepicker-header ui-widget-header ui-helper-clearfix" + cornerClass + "'>" +
                        (/all|left/.test(cornerClass) && row === 0 ? (isRTL ? next : prev) : "") +
                        (/all|right/.test(cornerClass) && row === 0 ? (isRTL ? prev : next) : "") +
                        this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
                        row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
                        "</div><table class='ui-datepicker-calendar'><thead>" +
                        "<tr>";
                    thead = (showWeek ? "<th class='ui-datepicker-week-col'>" + this._get(inst, "weekHeader") + "</th>" : "");
                    for (dow = 0; dow < 7; dow++) { // days of the week
                        day = (dow + firstDay) % 7;
                        thead += "<th" + ((dow + firstDay + 6) % 7 >= 5 ? " class='ui-datepicker-week-end'" : "") + ">" +
                            "<span title='" + dayNames[day] + "'>" + dayNamesMin[day] + "</span></th>";
                    }
                    calender += thead + "</tr></thead><tbody>";
                    daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
                    if (drawYear === inst.selectedYear && drawMonth === inst.selectedMonth) {
                        inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
                    }
                    leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
                    curRows = Math.ceil((leadDays + daysInMonth) / 7); // calculate the number of rows to generate
                    numRows = (isMultiMonth ? this.maxRows > curRows ? this.maxRows : curRows : curRows); //If multiple months, use the higher number of rows (see #7043)
                    this.maxRows = numRows;
                    printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
                    for (dRow = 0; dRow < numRows; dRow++) { // create date picker rows
                        calender += "<tr>";
                        tbody = (!showWeek ? "" : "<td class='ui-datepicker-week-col'>" +
                            this._get(inst, "calculateWeek")(printDate) + "</td>");
                        for (dow = 0; dow < 7; dow++) { // create date picker days
                            daySettings = (beforeShowDay ?
                                beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, ""]);
                            otherMonth = (printDate.getMonth() !== drawMonth);
                            unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
                                (minDate && printDate < minDate) || (maxDate && printDate > maxDate);
                            tbody += "<td class='" +
                                ((dow + firstDay + 6) % 7 >= 5 ? " ui-datepicker-week-end" : "") + // highlight weekends
                                (otherMonth ? " ui-datepicker-other-month" : "") + // highlight days from other months
                                ((printDate.getTime() === selectedDate.getTime() && drawMonth === inst.selectedMonth && inst._keyEvent) || // user pressed key
                                (defaultDate.getTime() === printDate.getTime() && defaultDate.getTime() === selectedDate.getTime()) ?
                                // or defaultDate is current printedDate and defaultDate is selectedDate
                                " " + this._dayOverClass : "") + // highlight selected day
                                (unselectable ? " " + this._unselectableClass + " ui-state-disabled" : "") +  // highlight unselectable days
                                (otherMonth && !showOtherMonths ? "" : " " + daySettings[1] + // highlight custom dates
                                (printDate.getTime() === currentDate.getTime() ? " " + this._currentClass : "") + // highlight selected day
                                (printDate.getTime() === today.getTime() ? " ui-datepicker-today" : "")) + "'" + // highlight today (if different)
                                ((!otherMonth || showOtherMonths) && daySettings[2] ? " title='" + daySettings[2].replace(/'/g, "&#39;") + "'" : "") + // cell title
                                (unselectable ? "" : " data-handler='selectDay' data-event='click' data-month='" + printDate.getMonth() + "' data-year='" + printDate.getFullYear() + "'") + ">" + // actions
                                (otherMonth && !showOtherMonths ? "&#xa0;" : // display for other months
                                (unselectable ? "<span class='ui-state-default'>" + printDate.getDate() + "</span>" : "<a class='ui-state-default" +
                                (printDate.getTime() === today.getTime() ? " ui-state-highlight" : "") +
                                (printDate.getTime() === currentDate.getTime() ? " ui-state-active" : "") + // highlight selected day
                                (otherMonth ? " ui-priority-secondary" : "") + // distinguish dates from other months
                                "' href='#'>" + printDate.getDate() + "</a>")) + "</td>"; // display selectable date
                            printDate.setDate(printDate.getDate() + 1);
                            printDate = this._daylightSavingAdjust(printDate);
                        }
                        calender += tbody + "</tr>";
                    }
                    drawMonth++;
                    if (drawMonth > 11) {
                        drawMonth = 0;
                        drawYear++;
                    }
                    calender += "</tbody></table>" + (isMultiMonth ? "</div>" +
                                ((numMonths[0] > 0 && col === numMonths[1] - 1) ? "<div class='ui-datepicker-row-break'></div>" : "") : "");
                    group += calender;
                }
                html += group;
            }
            html += buttonPanel;
            inst._keyEvent = false;
            return html;
        },

        /* Generate the month and year header. */
        _generateMonthYearHeader: function (inst, drawMonth, drawYear, minDate, maxDate,
                secondary, monthNames, monthNamesShort) {

            var inMinYear, inMaxYear, month, years, thisYear, determineYear, year, endYear,
                changeMonth = this._get(inst, "changeMonth"),
                changeYear = this._get(inst, "changeYear"),
                showMonthAfterYear = this._get(inst, "showMonthAfterYear"),
                html = "<div class='ui-datepicker-title'>",
                monthHtml = "";

            // month selection
            if (secondary || !changeMonth) {
                monthHtml += "<span class='ui-datepicker-month'>" + monthNames[drawMonth] + "</span>";
            } else {
                inMinYear = (minDate && minDate.getFullYear() === drawYear);
                inMaxYear = (maxDate && maxDate.getFullYear() === drawYear);
                monthHtml += "<select class='ui-datepicker-month' data-handler='selectMonth' data-event='change'>";
                for (month = 0; month < 12; month++) {
                    if ((!inMinYear || month >= minDate.getMonth()) && (!inMaxYear || month <= maxDate.getMonth())) {
                        monthHtml += "<option value='" + month + "'" +
                            (month === drawMonth ? " selected='selected'" : "") +
                            ">" + monthNamesShort[month] + "</option>";
                    }
                }
                monthHtml += "</select>";
            }

            if (!showMonthAfterYear) {
                html += monthHtml + (secondary || !(changeMonth && changeYear) ? "&#xa0;" : "");
            }

            // year selection
            if (!inst.yearshtml) {
                inst.yearshtml = "";
                if (secondary || !changeYear) {
                    html += "<span class='ui-datepicker-year'>" + drawYear + "</span>";
                } else {
                    // determine range of years to display
                    years = this._get(inst, "yearRange").split(":");
                    thisYear = new Date().getFullYear();
                    determineYear = function (value) {
                        var year = (value.match(/c[+\-].*/) ? drawYear + parseInt(value.substring(1), 10) :
                            (value.match(/[+\-].*/) ? thisYear + parseInt(value, 10) :
                            parseInt(value, 10)));
                        return (isNaN(year) ? thisYear : year);
                    };
                    year = determineYear(years[0]);
                    endYear = Math.max(year, determineYear(years[1] || ""));
                    year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
                    endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
                    inst.yearshtml += "<select class='ui-datepicker-year' data-handler='selectYear' data-event='change'>";
                    for (; year <= endYear; year++) {
                        inst.yearshtml += "<option value='" + year + "'" +
                            (year === drawYear ? " selected='selected'" : "") +
                            ">" + year + "</option>";
                    }
                    inst.yearshtml += "</select>";

                    html += inst.yearshtml;
                    inst.yearshtml = null;
                }
            }

            html += this._get(inst, "yearSuffix");
            if (showMonthAfterYear) {
                html += (secondary || !(changeMonth && changeYear) ? "&#xa0;" : "") + monthHtml;
            }
            html += "</div>"; // Close datepicker_header
            return html;
        },

        /* Adjust one of the date sub-fields. */
        _adjustInstDate: function (inst, offset, period) {
            var year = inst.drawYear + (period === "Y" ? offset : 0),
                month = inst.drawMonth + (period === "M" ? offset : 0),
                day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) + (period === "D" ? offset : 0),
                date = this._restrictMinMax(inst, this._daylightSavingAdjust(new Date(year, month, day)));

            inst.selectedDay = date.getDate();
            inst.drawMonth = inst.selectedMonth = date.getMonth();
            inst.drawYear = inst.selectedYear = date.getFullYear();
            if (period === "M" || period === "Y") {
                this._notifyChange(inst);
            }
        },

        /* Ensure a date is within any min/max bounds. */
        _restrictMinMax: function (inst, date) {
            var minDate = this._getMinMaxDate(inst, "min"),
                maxDate = this._getMinMaxDate(inst, "max"),
                newDate = (minDate && date < minDate ? minDate : date);
            return (maxDate && newDate > maxDate ? maxDate : newDate);
        },

        /* Notify change of month/year. */
        _notifyChange: function (inst) {
            var onChange = this._get(inst, "onChangeMonthYear");
            if (onChange) {
                onChange.apply((inst.input ? inst.input[0] : null),
                    [inst.selectedYear, inst.selectedMonth + 1, inst]);
            }
        },

        /* Determine the number of months to show. */
        _getNumberOfMonths: function (inst) {
            var numMonths = this._get(inst, "numberOfMonths");
            return (numMonths == null ? [1, 1] : (typeof numMonths === "number" ? [1, numMonths] : numMonths));
        },

        /* Determine the current maximum date - ensure no time components are set. */
        _getMinMaxDate: function (inst, minMax) {
            return this._determineDate(inst, this._get(inst, minMax + "Date"), null);
        },

        /* Find the number of days in a given month. */
        _getDaysInMonth: function (year, month) {
            return 32 - this._daylightSavingAdjust(new Date(year, month, 32)).getDate();
        },

        /* Find the day of the week of the first of a month. */
        _getFirstDayOfMonth: function (year, month) {
            return new Date(year, month, 1).getDay();
        },

        /* Determines if we should allow a "next/prev" month display change. */
        _canAdjustMonth: function (inst, offset, curYear, curMonth) {
            var numMonths = this._getNumberOfMonths(inst),
                date = this._daylightSavingAdjust(new Date(curYear,
                curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));

            if (offset < 0) {
                date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
            }
            return this._isInRange(inst, date);
        },

        /* Is the given date in the accepted range? */
        _isInRange: function (inst, date) {
            var yearSplit, currentYear,
                minDate = this._getMinMaxDate(inst, "min"),
                maxDate = this._getMinMaxDate(inst, "max"),
                minYear = null,
                maxYear = null,
                years = this._get(inst, "yearRange");
            if (years) {
                yearSplit = years.split(":");
                currentYear = new Date().getFullYear();
                minYear = parseInt(yearSplit[0], 10);
                maxYear = parseInt(yearSplit[1], 10);
                if (yearSplit[0].match(/[+\-].*/)) {
                    minYear += currentYear;
                }
                if (yearSplit[1].match(/[+\-].*/)) {
                    maxYear += currentYear;
                }
            }

            return ((!minDate || date.getTime() >= minDate.getTime()) &&
                (!maxDate || date.getTime() <= maxDate.getTime()) &&
                (!minYear || date.getFullYear() >= minYear) &&
                (!maxYear || date.getFullYear() <= maxYear));
        },

        /* Provide the configuration settings for formatting/parsing. */
        _getFormatConfig: function (inst) {
            var shortYearCutoff = this._get(inst, "shortYearCutoff");
            shortYearCutoff = (typeof shortYearCutoff !== "string" ? shortYearCutoff :
                new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
            return {
                shortYearCutoff: shortYearCutoff,
                dayNamesShort: this._get(inst, "dayNamesShort"), dayNames: this._get(inst, "dayNames"),
                monthNamesShort: this._get(inst, "monthNamesShort"), monthNames: this._get(inst, "monthNames")
            };
        },

        /* Format the given date for display. */
        _formatDate: function (inst, day, month, year) {
            if (!day) {
                inst.currentDay = inst.selectedDay;
                inst.currentMonth = inst.selectedMonth;
                inst.currentYear = inst.selectedYear;
            }
            var date = (day ? (typeof day === "object" ? day :
                this._daylightSavingAdjust(new Date(year, month, day))) :
                this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
            return this.formatDate(this._get(inst, "dateFormat"), date, this._getFormatConfig(inst));
        }
    });

    /*
     * Bind hover events for datepicker elements.
     * Done via delegate so the binding only occurs once in the lifetime of the parent div.
     * Global instActive, set by _updateDatepicker allows the handlers to find their way back to the active picker.
     */
    function bindHover(dpDiv) {
        var selector = "button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a";
        return dpDiv.delegate(selector, "mouseout", function () {
            $(this).removeClass("ui-state-hover");
            if (this.className.indexOf("ui-datepicker-prev") !== -1) {
                $(this).removeClass("ui-datepicker-prev-hover");
            }
            if (this.className.indexOf("ui-datepicker-next") !== -1) {
                $(this).removeClass("ui-datepicker-next-hover");
            }
        })
            .delegate(selector, "mouseover", function () {
                if (!$.datepicker._isDisabledDatepicker(instActive.inline ? dpDiv.parent()[0] : instActive.input[0])) {
                    $(this).parents(".ui-datepicker-calendar").find("a").removeClass("ui-state-hover");
                    $(this).addClass("ui-state-hover");
                    if (this.className.indexOf("ui-datepicker-prev") !== -1) {
                        $(this).addClass("ui-datepicker-prev-hover");
                    }
                    if (this.className.indexOf("ui-datepicker-next") !== -1) {
                        $(this).addClass("ui-datepicker-next-hover");
                    }
                }
            });
    }

    /* jQuery extend now ignores nulls! */
    function extendRemove(target, props) {
        $.extend(target, props);
        for (var name in props) {
            if (props[name] == null) {
                target[name] = props[name];
            }
        }
        return target;
    }

    /* Invoke the datepicker functionality.
       @param  options  string - a command, optionally followed by additional parameters or
                        Object - settings for attaching new datepicker functionality
       @return  jQuery object */
    $.fn.datepicker = function (options) {

        /* Verify an empty collection wasn't passed - Fixes #6976 */
        if (!this.length) {
            return this;
        }

        /* Initialise the date picker. */
        if (!$.datepicker.initialized) {
            $(document).mousedown($.datepicker._checkExternalClick);
            $.datepicker.initialized = true;
        }

        /* Append datepicker main container to body if not exist. */
        if ($("#" + $.datepicker._mainDivId).length === 0) {
            $("body").append($.datepicker.dpDiv);
        }

        var otherArgs = Array.prototype.slice.call(arguments, 1);
        if (typeof options === "string" && (options === "isDisabled" || options === "getDate" || options === "widget")) {
            return $.datepicker["_" + options + "Datepicker"].
                apply($.datepicker, [this[0]].concat(otherArgs));
        }
        if (options === "option" && arguments.length === 2 && typeof arguments[1] === "string") {
            return $.datepicker["_" + options + "Datepicker"].
                apply($.datepicker, [this[0]].concat(otherArgs));
        }
        return this.each(function () {
            typeof options === "string" ?
                $.datepicker["_" + options + "Datepicker"].
                    apply($.datepicker, [this].concat(otherArgs)) :
                $.datepicker._attachDatepicker(this, options);
        });
    };

    $.datepicker = new Datepicker(); // singleton instance
    $.datepicker.initialized = false;
    $.datepicker.uuid = new Date().getTime();
    $.datepicker.version = "1.10.3";

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

    $.widget("ui.menu", {
        version: "1.10.3",
        defaultElement: "<ul>",
        delay: 300,
        options: {
            icons: {
                submenu: "ui-icon-carat-1-e"
            },
            menus: "ul",
            position: {
                my: "left top",
                at: "right top"
            },
            role: "menu",

            // callbacks
            blur: null,
            focus: null,
            select: null
        },

        _create: function () {
            this.activeMenu = this.element;
            // flag used to prevent firing of the click handler
            // as the event bubbles up through nested menus
            this.mouseHandled = false;
            this.element
                .uniqueId()
                .addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
                .toggleClass("ui-menu-icons", !!this.element.find(".ui-icon").length)
                .attr({
                    role: this.options.role,
                    tabIndex: 0
                })
                // need to catch all clicks on disabled menu
                // not possible through _on
                .bind("click" + this.eventNamespace, $.proxy(function (event) {
                    if (this.options.disabled) {
                        event.preventDefault();
                    }
                }, this));

            if (this.options.disabled) {
                this.element
                    .addClass("ui-state-disabled")
                    .attr("aria-disabled", "true");
            }

            this._on({
                // Prevent focus from sticking to links inside menu after clicking
                // them (focus should always stay on UL during navigation).
                "mousedown .ui-menu-item > a": function (event) {
                    event.preventDefault();
                },
                "click .ui-state-disabled > a": function (event) {
                    event.preventDefault();
                },
                "click .ui-menu-item:has(a)": function (event) {
                    var target = $(event.target).closest(".ui-menu-item");
                    if (!this.mouseHandled && target.not(".ui-state-disabled").length) {
                        this.mouseHandled = true;

                        this.select(event);
                        // Open submenu on click
                        if (target.has(".ui-menu").length) {
                            this.expand(event);
                        } else if (!this.element.is(":focus")) {
                            // Redirect focus to the menu
                            this.element.trigger("focus", [true]);

                            // If the active item is on the top level, let it stay active.
                            // Otherwise, blur the active item since it is no longer visible.
                            if (this.active && this.active.parents(".ui-menu").length === 1) {
                                clearTimeout(this.timer);
                            }
                        }
                    }
                },
                "mouseenter .ui-menu-item": function (event) {
                    var target = $(event.currentTarget);
                    // Remove ui-state-active class from siblings of the newly focused menu item
                    // to avoid a jump caused by adjacent elements both having a class with a border
                    target.siblings().children(".ui-state-active").removeClass("ui-state-active");
                    this.focus(event, target);
                },
                mouseleave: "collapseAll",
                "mouseleave .ui-menu": "collapseAll",
                focus: function (event, keepActiveItem) {
                    // If there's already an active item, keep it active
                    // If not, activate the first item
                    var item = this.active || this.element.children(".ui-menu-item").eq(0);

                    if (!keepActiveItem) {
                        this.focus(event, item);
                    }
                },
                blur: function (event) {
                    this._delay(function () {
                        if (!$.contains(this.element[0], this.document[0].activeElement)) {
                            this.collapseAll(event);
                        }
                    });
                },
                keydown: "_keydown"
            });

            this.refresh();

            // Clicks outside of a menu collapse any open menus
            this._on(this.document, {
                click: function (event) {
                    if (!$(event.target).closest(".ui-menu").length) {
                        this.collapseAll(event);
                    }

                    // Reset the mouseHandled flag
                    this.mouseHandled = false;
                }
            });
        },

        _destroy: function () {
            // Destroy (sub)menus
            this.element
                .removeAttr("aria-activedescendant")
                .find(".ui-menu").addBack()
                    .removeClass("ui-menu ui-widget ui-widget-content ui-corner-all ui-menu-icons")
                    .removeAttr("role")
                    .removeAttr("tabIndex")
                    .removeAttr("aria-labelledby")
                    .removeAttr("aria-expanded")
                    .removeAttr("aria-hidden")
                    .removeAttr("aria-disabled")
                    .removeUniqueId()
                    .show();

            // Destroy menu items
            this.element.find(".ui-menu-item")
                .removeClass("ui-menu-item")
                .removeAttr("role")
                .removeAttr("aria-disabled")
                .children("a")
                    .removeUniqueId()
                    .removeClass("ui-corner-all ui-state-hover")
                    .removeAttr("tabIndex")
                    .removeAttr("role")
                    .removeAttr("aria-haspopup")
                    .children().each(function () {
                        var elem = $(this);
                        if (elem.data("ui-menu-submenu-carat")) {
                            elem.remove();
                        }
                    });

            // Destroy menu dividers
            this.element.find(".ui-menu-divider").removeClass("ui-menu-divider ui-widget-content");
        },

        _keydown: function (event) {
            /*jshint maxcomplexity:20*/
            var match, prev, character, skip, regex,
                preventDefault = true;

            function escape(value) {
                return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
            }

            switch (event.keyCode) {
                case $.ui.keyCode.PAGE_UP:
                    this.previousPage(event);
                    break;
                case $.ui.keyCode.PAGE_DOWN:
                    this.nextPage(event);
                    break;
                case $.ui.keyCode.HOME:
                    this._move("first", "first", event);
                    break;
                case $.ui.keyCode.END:
                    this._move("last", "last", event);
                    break;
                case $.ui.keyCode.UP:
                    this.previous(event);
                    break;
                case $.ui.keyCode.DOWN:
                    this.next(event);
                    break;
                case $.ui.keyCode.LEFT:
                    this.collapse(event);
                    break;
                case $.ui.keyCode.RIGHT:
                    if (this.active && !this.active.is(".ui-state-disabled")) {
                        this.expand(event);
                    }
                    break;
                case $.ui.keyCode.ENTER:
                case $.ui.keyCode.SPACE:
                    this._activate(event);
                    break;
                case $.ui.keyCode.ESCAPE:
                    this.collapse(event);
                    break;
                default:
                    preventDefault = false;
                    prev = this.previousFilter || "";
                    character = String.fromCharCode(event.keyCode);
                    skip = false;

                    clearTimeout(this.filterTimer);

                    if (character === prev) {
                        skip = true;
                    } else {
                        character = prev + character;
                    }

                    regex = new RegExp("^" + escape(character), "i");
                    match = this.activeMenu.children(".ui-menu-item").filter(function () {
                        return regex.test($(this).children("a").text());
                    });
                    match = skip && match.index(this.active.next()) !== -1 ?
                        this.active.nextAll(".ui-menu-item") :
                        match;

                    // If no matches on the current filter, reset to the last character pressed
                    // to move down the menu to the first item that starts with that character
                    if (!match.length) {
                        character = String.fromCharCode(event.keyCode);
                        regex = new RegExp("^" + escape(character), "i");
                        match = this.activeMenu.children(".ui-menu-item").filter(function () {
                            return regex.test($(this).children("a").text());
                        });
                    }

                    if (match.length) {
                        this.focus(event, match);
                        if (match.length > 1) {
                            this.previousFilter = character;
                            this.filterTimer = this._delay(function () {
                                delete this.previousFilter;
                            }, 1000);
                        } else {
                            delete this.previousFilter;
                        }
                    } else {
                        delete this.previousFilter;
                    }
            }

            if (preventDefault) {
                event.preventDefault();
            }
        },

        _activate: function (event) {
            if (!this.active.is(".ui-state-disabled")) {
                if (this.active.children("a[aria-haspopup='true']").length) {
                    this.expand(event);
                } else {
                    this.select(event);
                }
            }
        },

        refresh: function () {
            var menus,
                icon = this.options.icons.submenu,
                submenus = this.element.find(this.options.menus);

            // Initialize nested menus
            submenus.filter(":not(.ui-menu)")
                .addClass("ui-menu ui-widget ui-widget-content ui-corner-all")
                .hide()
                .attr({
                    role: this.options.role,
                    "aria-hidden": "true",
                    "aria-expanded": "false"
                })
                .each(function () {
                    var menu = $(this),
                        item = menu.prev("a"),
                        submenuCarat = $("<span>")
                            .addClass("ui-menu-icon ui-icon " + icon)
                            .data("ui-menu-submenu-carat", true);

                    item
                        .attr("aria-haspopup", "true")
                        .prepend(submenuCarat);
                    menu.attr("aria-labelledby", item.attr("id"));
                });

            menus = submenus.add(this.element);

            // Don't refresh list items that are already adapted
            menus.children(":not(.ui-menu-item):has(a)")
                .addClass("ui-menu-item")
                .attr("role", "presentation")
                .children("a")
                    .uniqueId()
                    .addClass("ui-corner-all")
                    .attr({
                        tabIndex: -1,
                        role: this._itemRole()
                    });

            // Initialize unlinked menu-items containing spaces and/or dashes only as dividers
            menus.children(":not(.ui-menu-item)").each(function () {
                var item = $(this);
                // hyphen, em dash, en dash
                if (!/[^\-\u2014\u2013\s]/.test(item.text())) {
                    item.addClass("ui-widget-content ui-menu-divider");
                }
            });

            // Add aria-disabled attribute to any disabled menu item
            menus.children(".ui-state-disabled").attr("aria-disabled", "true");

            // If the active item has been removed, blur the menu
            if (this.active && !$.contains(this.element[0], this.active[0])) {
                this.blur();
            }
        },

        _itemRole: function () {
            return {
                menu: "menuitem",
                listbox: "option"
            }[this.options.role];
        },

        _setOption: function (key, value) {
            if (key === "icons") {
                this.element.find(".ui-menu-icon")
                    .removeClass(this.options.icons.submenu)
                    .addClass(value.submenu);
            }
            this._super(key, value);
        },

        focus: function (event, item) {
            var nested, focused;
            this.blur(event, event && event.type === "focus");

            this._scrollIntoView(item);

            this.active = item.first();
            focused = this.active.children("a").addClass("ui-state-focus");
            // Only update aria-activedescendant if there's a role
            // otherwise we assume focus is managed elsewhere
            if (this.options.role) {
                this.element.attr("aria-activedescendant", focused.attr("id"));
            }

            // Highlight active parent menu item, if any
            this.active
                .parent()
                .closest(".ui-menu-item")
                .children("a:first")
                .addClass("ui-state-active");

            if (event && event.type === "keydown") {
                this._close();
            } else {
                this.timer = this._delay(function () {
                    this._close();
                }, this.delay);
            }

            nested = item.children(".ui-menu");
            if (nested.length && (/^mouse/.test(event.type))) {
                this._startOpening(nested);
            }
            this.activeMenu = item.parent();

            this._trigger("focus", event, { item: item });
        },

        _scrollIntoView: function (item) {
            var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
            if (this._hasScroll()) {
                borderTop = parseFloat($.css(this.activeMenu[0], "borderTopWidth")) || 0;
                paddingTop = parseFloat($.css(this.activeMenu[0], "paddingTop")) || 0;
                offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
                scroll = this.activeMenu.scrollTop();
                elementHeight = this.activeMenu.height();
                itemHeight = item.height();

                if (offset < 0) {
                    this.activeMenu.scrollTop(scroll + offset);
                } else if (offset + itemHeight > elementHeight) {
                    this.activeMenu.scrollTop(scroll + offset - elementHeight + itemHeight);
                }
            }
        },

        blur: function (event, fromFocus) {
            if (!fromFocus) {
                clearTimeout(this.timer);
            }

            if (!this.active) {
                return;
            }

            this.active.children("a").removeClass("ui-state-focus");
            this.active = null;

            this._trigger("blur", event, { item: this.active });
        },

        _startOpening: function (submenu) {
            clearTimeout(this.timer);

            // Don't open if already open fixes a Firefox bug that caused a .5 pixel
            // shift in the submenu position when mousing over the carat icon
            if (submenu.attr("aria-hidden") !== "true") {
                return;
            }

            this.timer = this._delay(function () {
                this._close();
                this._open(submenu);
            }, this.delay);
        },

        _open: function (submenu) {
            var position = $.extend({
                of: this.active
            }, this.options.position);

            clearTimeout(this.timer);
            this.element.find(".ui-menu").not(submenu.parents(".ui-menu"))
                .hide()
                .attr("aria-hidden", "true");

            submenu
                .show()
                .removeAttr("aria-hidden")
                .attr("aria-expanded", "true")
                .position(position);
        },

        collapseAll: function (event, all) {
            clearTimeout(this.timer);
            this.timer = this._delay(function () {
                // If we were passed an event, look for the submenu that contains the event
                var currentMenu = all ? this.element :
                    $(event && event.target).closest(this.element.find(".ui-menu"));

                // If we found no valid submenu ancestor, use the main menu to close all sub menus anyway
                if (!currentMenu.length) {
                    currentMenu = this.element;
                }

                this._close(currentMenu);

                this.blur(event);
                this.activeMenu = currentMenu;
            }, this.delay);
        },

        // With no arguments, closes the currently active menu - if nothing is active
        // it closes all menus.  If passed an argument, it will search for menus BELOW
        _close: function (startMenu) {
            if (!startMenu) {
                startMenu = this.active ? this.active.parent() : this.element;
            }

            startMenu
                .find(".ui-menu")
                    .hide()
                    .attr("aria-hidden", "true")
                    .attr("aria-expanded", "false")
                .end()
                .find("a.ui-state-active")
                    .removeClass("ui-state-active");
        },

        collapse: function (event) {
            var newItem = this.active &&
                this.active.parent().closest(".ui-menu-item", this.element);
            if (newItem && newItem.length) {
                this._close();
                this.focus(event, newItem);
            }
        },

        expand: function (event) {
            var newItem = this.active &&
                this.active
                    .children(".ui-menu ")
                    .children(".ui-menu-item")
                    .first();

            if (newItem && newItem.length) {
                this._open(newItem.parent());

                // Delay so Firefox will not hide activedescendant change in expanding submenu from AT
                this._delay(function () {
                    this.focus(event, newItem);
                });
            }
        },

        next: function (event) {
            this._move("next", "first", event);
        },

        previous: function (event) {
            this._move("prev", "last", event);
        },

        isFirstItem: function () {
            return this.active && !this.active.prevAll(".ui-menu-item").length;
        },

        isLastItem: function () {
            return this.active && !this.active.nextAll(".ui-menu-item").length;
        },

        _move: function (direction, filter, event) {
            var next;
            if (this.active) {
                if (direction === "first" || direction === "last") {
                    next = this.active
                        [direction === "first" ? "prevAll" : "nextAll"](".ui-menu-item")
                        .eq(-1);
                } else {
                    next = this.active
                        [direction + "All"](".ui-menu-item")
                        .eq(0);
                }
            }
            if (!next || !next.length || !this.active) {
                next = this.activeMenu.children(".ui-menu-item")[filter]();
            }

            this.focus(event, next);
        },

        nextPage: function (event) {
            var item, base, height;

            if (!this.active) {
                this.next(event);
                return;
            }
            if (this.isLastItem()) {
                return;
            }
            if (this._hasScroll()) {
                base = this.active.offset().top;
                height = this.element.height();
                this.active.nextAll(".ui-menu-item").each(function () {
                    item = $(this);
                    return item.offset().top - base - height < 0;
                });

                this.focus(event, item);
            } else {
                this.focus(event, this.activeMenu.children(".ui-menu-item")
                    [!this.active ? "first" : "last"]());
            }
        },

        previousPage: function (event) {
            var item, base, height;
            if (!this.active) {
                this.next(event);
                return;
            }
            if (this.isFirstItem()) {
                return;
            }
            if (this._hasScroll()) {
                base = this.active.offset().top;
                height = this.element.height();
                this.active.prevAll(".ui-menu-item").each(function () {
                    item = $(this);
                    return item.offset().top - base + height > 0;
                });

                this.focus(event, item);
            } else {
                this.focus(event, this.activeMenu.children(".ui-menu-item").first());
            }
        },

        _hasScroll: function () {
            return this.element.outerHeight() < this.element.prop("scrollHeight");
        },

        select: function (event) {
            // TODO: It should never be possible to not have an active item at this
            // point, but the tests don't trigger mouseenter before click.
            this.active = this.active || $(event.target).closest(".ui-menu-item");
            var ui = { item: this.active };
            if (!this.active.has(".ui-menu").length) {
                this.collapseAll(event, true);
            }
            this._trigger("select", event, ui);
        }
    });

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

    var tabId = 0,
        rhash = /#.*$/;

    function getNextTabId() {
        return ++tabId;
    }

    function isLocal(anchor) {
        return anchor.hash.length > 1 &&
            decodeURIComponent(anchor.href.replace(rhash, "")) ===
                decodeURIComponent(location.href.replace(rhash, ""));
    }

    $.widget("ui.tabs", {
        version: "1.10.3",
        delay: 300,
        options: {
            active: null,
            collapsible: false,
            event: "click",
            heightStyle: "content",
            hide: null,
            show: null,

            // callbacks
            activate: null,
            beforeActivate: null,
            beforeLoad: null,
            load: null
        },

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

            this.running = false;

            this.element
                .addClass("ui-tabs ui-widget ui-widget-content ui-corner-all")
                .toggleClass("ui-tabs-collapsible", options.collapsible)
                // Prevent users from focusing disabled tabs via click
                .delegate(".ui-tabs-nav > li", "mousedown" + this.eventNamespace, function (event) {
                    if ($(this).is(".ui-state-disabled")) {
                        event.preventDefault();
                    }
                })
                // support: IE <9
                // Preventing the default action in mousedown doesn't prevent IE
                // from focusing the element, so if the anchor gets focused, blur.
                // We don't have to worry about focusing the previously focused
                // element since clicking on a non-focusable element should focus
                // the body anyway.
                .delegate(".ui-tabs-anchor", "focus" + this.eventNamespace, function () {
                    if ($(this).closest("li").is(".ui-state-disabled")) {
                        this.blur();
                    }
                });

            this._processTabs();
            options.active = this._initialActive();

            // Take disabling tabs via class attribute from HTML
            // into account and update option properly.
            if ($.isArray(options.disabled)) {
                options.disabled = $.unique(options.disabled.concat(
                    $.map(this.tabs.filter(".ui-state-disabled"), function (li) {
                        return that.tabs.index(li);
                    })
                )).sort();
            }

            // check for length avoids error when initializing empty list
            if (this.options.active !== false && this.anchors.length) {
                this.active = this._findActive(options.active);
            } else {
                this.active = $();
            }

            this._refresh();

            if (this.active.length) {
                this.load(options.active);
            }
        },

        _initialActive: function () {
            var active = this.options.active,
                collapsible = this.options.collapsible,
                locationHash = location.hash.substring(1);

            if (active === null) {
                // check the fragment identifier in the URL
                if (locationHash) {
                    this.tabs.each(function (i, tab) {
                        if ($(tab).attr("aria-controls") === locationHash) {
                            active = i;
                            return false;
                        }
                    });
                }

                // check for a tab marked active via a class
                if (active === null) {
                    active = this.tabs.index(this.tabs.filter(".ui-tabs-active"));
                }

                // no active tab, set to false
                if (active === null || active === -1) {
                    active = this.tabs.length ? 0 : false;
                }
            }

            // handle numbers: negative, out of range
            if (active !== false) {
                active = this.tabs.index(this.tabs.eq(active));
                if (active === -1) {
                    active = collapsible ? false : 0;
                }
            }

            // don't allow collapsible: false and active: false
            if (!collapsible && active === false && this.anchors.length) {
                active = 0;
            }

            return active;
        },

        _getCreateEventData: function () {
            return {
                tab: this.active,
                panel: !this.active.length ? $() : this._getPanelForTab(this.active)
            };
        },

        _tabKeydown: function (event) {
            /*jshint maxcomplexity:15*/
            var focusedTab = $(this.document[0].activeElement).closest("li"),
                selectedIndex = this.tabs.index(focusedTab),
                goingForward = true;

            if (this._handlePageNav(event)) {
                return;
            }

            switch (event.keyCode) {
                case $.ui.keyCode.RIGHT:
                case $.ui.keyCode.DOWN:
                    selectedIndex++;
                    break;
                case $.ui.keyCode.UP:
                case $.ui.keyCode.LEFT:
                    goingForward = false;
                    selectedIndex--;
                    break;
                case $.ui.keyCode.END:
                    selectedIndex = this.anchors.length - 1;
                    break;
                case $.ui.keyCode.HOME:
                    selectedIndex = 0;
                    break;
                case $.ui.keyCode.SPACE:
                    // Activate only, no collapsing
                    event.preventDefault();
                    clearTimeout(this.activating);
                    this._activate(selectedIndex);
                    return;
                case $.ui.keyCode.ENTER:
                    // Toggle (cancel delayed activation, allow collapsing)
                    event.preventDefault();
                    clearTimeout(this.activating);
                    // Determine if we should collapse or activate
                    this._activate(selectedIndex === this.options.active ? false : selectedIndex);
                    return;
                default:
                    return;
            }

            // Focus the appropriate tab, based on which key was pressed
            event.preventDefault();
            clearTimeout(this.activating);
            selectedIndex = this._focusNextTab(selectedIndex, goingForward);

            // Navigating with control key will prevent automatic activation
            if (!event.ctrlKey) {
                // Update aria-selected immediately so that AT think the tab is already selected.
                // Otherwise AT may confuse the user by stating that they need to activate the tab,
                // but the tab will already be activated by the time the announcement finishes.
                focusedTab.attr("aria-selected", "false");
                this.tabs.eq(selectedIndex).attr("aria-selected", "true");

                this.activating = this._delay(function () {
                    this.option("active", selectedIndex);
                }, this.delay);
            }
        },

        _panelKeydown: function (event) {
            if (this._handlePageNav(event)) {
                return;
            }

            // Ctrl+up moves focus to the current tab
            if (event.ctrlKey && event.keyCode === $.ui.keyCode.UP) {
                event.preventDefault();
                this.active.focus();
            }
        },

        // Alt+page up/down moves focus to the previous/next tab (and activates)
        _handlePageNav: function (event) {
            if (event.altKey && event.keyCode === $.ui.keyCode.PAGE_UP) {
                this._activate(this._focusNextTab(this.options.active - 1, false));
                return true;
            }
            if (event.altKey && event.keyCode === $.ui.keyCode.PAGE_DOWN) {
                this._activate(this._focusNextTab(this.options.active + 1, true));
                return true;
            }
        },

        _findNextTab: function (index, goingForward) {
            var lastTabIndex = this.tabs.length - 1;

            function constrain() {
                if (index > lastTabIndex) {
                    index = 0;
                }
                if (index < 0) {
                    index = lastTabIndex;
                }
                return index;
            }

            while ($.inArray(constrain(), this.options.disabled) !== -1) {
                index = goingForward ? index + 1 : index - 1;
            }

            return index;
        },

        _focusNextTab: function (index, goingForward) {
            index = this._findNextTab(index, goingForward);
            this.tabs.eq(index).focus();
            return index;
        },

        _setOption: function (key, value) {
            if (key === "active") {
                // _activate() will handle invalid values and update this.options
                this._activate(value);
                return;
            }

            if (key === "disabled") {
                // don't use the widget factory's disabled handling
                this._setupDisabled(value);
                return;
            }

            this._super(key, value);

            if (key === "collapsible") {
                this.element.toggleClass("ui-tabs-collapsible", value);
                // Setting collapsible: false while collapsed; open first panel
                if (!value && this.options.active === false) {
                    this._activate(0);
                }
            }

            if (key === "event") {
                this._setupEvents(value);
            }

            if (key === "heightStyle") {
                this._setupHeightStyle(value);
            }
        },

        _tabId: function (tab) {
            return tab.attr("aria-controls") || "ui-tabs-" + getNextTabId();
        },

        _sanitizeSelector: function (hash) {
            return hash ? hash.replace(/[!"$%&'()*+,.\/:;<=>?@\[\]\^`{|}~]/g, "\\$&") : "";
        },

        refresh: function () {
            var options = this.options,
                lis = this.tablist.children(":has(a[href])");

            // get disabled tabs from class attribute from HTML
            // this will get converted to a boolean if needed in _refresh()
            options.disabled = $.map(lis.filter(".ui-state-disabled"), function (tab) {
                return lis.index(tab);
            });

            this._processTabs();

            // was collapsed or no tabs
            if (options.active === false || !this.anchors.length) {
                options.active = false;
                this.active = $();
                // was active, but active tab is gone
            } else if (this.active.length && !$.contains(this.tablist[0], this.active[0])) {
                // all remaining tabs are disabled
                if (this.tabs.length === options.disabled.length) {
                    options.active = false;
                    this.active = $();
                    // activate previous tab
                } else {
                    this._activate(this._findNextTab(Math.max(0, options.active - 1), false));
                }
                // was active, active tab still exists
            } else {
                // make sure active index is correct
                options.active = this.tabs.index(this.active);
            }

            this._refresh();
        },

        _refresh: function () {
            this._setupDisabled(this.options.disabled);
            this._setupEvents(this.options.event);
            this._setupHeightStyle(this.options.heightStyle);

            this.tabs.not(this.active).attr({
                "aria-selected": "false",
                tabIndex: -1
            });
            this.panels.not(this._getPanelForTab(this.active))
                .hide()
                .attr({
                    "aria-expanded": "false",
                    "aria-hidden": "true"
                });

            // Make sure one tab is in the tab order
            if (!this.active.length) {
                this.tabs.eq(0).attr("tabIndex", 0);
            } else {
                this.active
                    .addClass("ui-tabs-active ui-state-active")
                    .attr({
                        "aria-selected": "true",
                        tabIndex: 0
                    });
                this._getPanelForTab(this.active)
                    .show()
                    .attr({
                        "aria-expanded": "true",
                        "aria-hidden": "false"
                    });
            }
        },

        _processTabs: function () {
            var that = this;

            this.tablist = this._getList()
                .addClass("ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all")
                .attr("role", "tablist");

            this.tabs = this.tablist.find("> li:has(a[href])")
                .addClass("ui-state-default ui-corner-top")
                .attr({
                    role: "tab",
                    tabIndex: -1
                });

            this.anchors = this.tabs.map(function () {
                return $("a", this)[0];
            })
                .addClass("ui-tabs-anchor")
                .attr({
                    role: "presentation",
                    tabIndex: -1
                });

            this.panels = $();

            this.anchors.each(function (i, anchor) {
                var selector, panel, panelId,
                    anchorId = $(anchor).uniqueId().attr("id"),
                    tab = $(anchor).closest("li"),
                    originalAriaControls = tab.attr("aria-controls");

                // inline tab
                if (isLocal(anchor)) {
                    selector = anchor.hash;
                    panel = that.element.find(that._sanitizeSelector(selector));
                    // remote tab
                } else {
                    panelId = that._tabId(tab);
                    selector = "#" + panelId;
                    panel = that.element.find(selector);
                    if (!panel.length) {
                        panel = that._createPanel(panelId);
                        panel.insertAfter(that.panels[i - 1] || that.tablist);
                    }
                    panel.attr("aria-live", "polite");
                }

                if (panel.length) {
                    that.panels = that.panels.add(panel);
                }
                if (originalAriaControls) {
                    tab.data("ui-tabs-aria-controls", originalAriaControls);
                }
                tab.attr({
                    "aria-controls": selector.substring(1),
                    "aria-labelledby": anchorId
                });
                panel.attr("aria-labelledby", anchorId);
            });

            this.panels
                .addClass("ui-tabs-panel ui-widget-content ui-corner-bottom")
                .attr("role", "tabpanel");
        },

        // allow overriding how to find the list for rare usage scenarios (#7715)
        _getList: function () {
            return this.element.find("ol,ul").eq(0);
        },

        _createPanel: function (id) {
            return $("<div>")
                .attr("id", id)
                .addClass("ui-tabs-panel ui-widget-content ui-corner-bottom")
                .data("ui-tabs-destroy", true);
        },

        _setupDisabled: function (disabled) {
            if ($.isArray(disabled)) {
                if (!disabled.length) {
                    disabled = false;
                } else if (disabled.length === this.anchors.length) {
                    disabled = true;
                }
            }

            // disable tabs
            for (var i = 0, li; (li = this.tabs[i]) ; i++) {
                if (disabled === true || $.inArray(i, disabled) !== -1) {
                    $(li)
                        .addClass("ui-state-disabled")
                        .attr("aria-disabled", "true");
                } else {
                    $(li)
                        .removeClass("ui-state-disabled")
                        .removeAttr("aria-disabled");
                }
            }

            this.options.disabled = disabled;
        },

        _setupEvents: function (event) {
            var events = {
                click: function (event) {
                    event.preventDefault();
                }
            };
            if (event) {
                $.each(event.split(" "), function (index, eventName) {
                    events[eventName] = "_eventHandler";
                });
            }

            this._off(this.anchors.add(this.tabs).add(this.panels));
            this._on(this.anchors, events);
            this._on(this.tabs, { keydown: "_tabKeydown" });
            this._on(this.panels, { keydown: "_panelKeydown" });

            this._focusable(this.tabs);
            this._hoverable(this.tabs);
        },

        _setupHeightStyle: function (heightStyle) {
            var maxHeight,
                parent = this.element.parent();

            if (heightStyle === "fill") {
                maxHeight = parent.height();
                maxHeight -= this.element.outerHeight() - this.element.height();

                this.element.siblings(":visible").each(function () {
                    var elem = $(this),
                        position = elem.css("position");

                    if (position === "absolute" || position === "fixed") {
                        return;
                    }
                    maxHeight -= elem.outerHeight(true);
                });

                this.element.children().not(this.panels).each(function () {
                    maxHeight -= $(this).outerHeight(true);
                });

                this.panels.each(function () {
                    $(this).height(Math.max(0, maxHeight -
                        $(this).innerHeight() + $(this).height()));
                })
                .css("overflow", "auto");
            } else if (heightStyle === "auto") {
                maxHeight = 0;
                this.panels.each(function () {
                    maxHeight = Math.max(maxHeight, $(this).height("").height());
                }).height(maxHeight);
            }
        },

        _eventHandler: function (event) {
            var options = this.options,
                active = this.active,
                anchor = $(event.currentTarget),
                tab = anchor.closest("li"),
                clickedIsActive = tab[0] === active[0],
                collapsing = clickedIsActive && options.collapsible,
                toShow = collapsing ? $() : this._getPanelForTab(tab),
                toHide = !active.length ? $() : this._getPanelForTab(active),
                eventData = {
                    oldTab: active,
                    oldPanel: toHide,
                    newTab: collapsing ? $() : tab,
                    newPanel: toShow
                };

            event.preventDefault();

            if (tab.hasClass("ui-state-disabled") ||
                // tab is already loading
                    tab.hasClass("ui-tabs-loading") ||
                // can't switch durning an animation
                    this.running ||
                // click on active header, but not collapsible
                    (clickedIsActive && !options.collapsible) ||
                // allow canceling activation
                    (this._trigger("beforeActivate", event, eventData) === false)) {
                return;
            }

            options.active = collapsing ? false : this.tabs.index(tab);

            this.active = clickedIsActive ? $() : tab;
            if (this.xhr) {
                this.xhr.abort();
            }

            if (!toHide.length && !toShow.length) {
                $.error("jQuery UI Tabs: Mismatching fragment identifier.");
            }

            if (toShow.length) {
                this.load(this.tabs.index(tab), event);
            }
            this._toggle(event, eventData);
        },

        // handles show/hide for selecting tabs
        _toggle: function (event, eventData) {
            var that = this,
                toShow = eventData.newPanel,
                toHide = eventData.oldPanel;

            this.running = true;

            function complete() {
                that.running = false;
                that._trigger("activate", event, eventData);
            }

            function show() {
                eventData.newTab.closest("li").addClass("ui-tabs-active ui-state-active");

                if (toShow.length && that.options.show) {
                    that._show(toShow, that.options.show, complete);
                } else {
                    toShow.show();
                    complete();
                }
            }

            // start out by hiding, then showing, then completing
            if (toHide.length && this.options.hide) {
                this._hide(toHide, this.options.hide, function () {
                    eventData.oldTab.closest("li").removeClass("ui-tabs-active ui-state-active");
                    show();
                });
            } else {
                eventData.oldTab.closest("li").removeClass("ui-tabs-active ui-state-active");
                toHide.hide();
                show();
            }

            toHide.attr({
                "aria-expanded": "false",
                "aria-hidden": "true"
            });
            eventData.oldTab.attr("aria-selected", "false");
            // If we're switching tabs, remove the old tab from the tab order.
            // If we're opening from collapsed state, remove the previous tab from the tab order.
            // If we're collapsing, then keep the collapsing tab in the tab order.
            if (toShow.length && toHide.length) {
                eventData.oldTab.attr("tabIndex", -1);
            } else if (toShow.length) {
                this.tabs.filter(function () {
                    return $(this).attr("tabIndex") === 0;
                })
                .attr("tabIndex", -1);
            }

            toShow.attr({
                "aria-expanded": "true",
                "aria-hidden": "false"
            });
            eventData.newTab.attr({
                "aria-selected": "true",
                tabIndex: 0
            });
        },

        _activate: function (index) {
            var anchor,
                active = this._findActive(index);

            // trying to activate the already active panel
            if (active[0] === this.active[0]) {
                return;
            }

            // trying to collapse, simulate a click on the current active header
            if (!active.length) {
                active = this.active;
            }

            anchor = active.find(".ui-tabs-anchor")[0];
            this._eventHandler({
                target: anchor,
                currentTarget: anchor,
                preventDefault: $.noop
            });
        },

        _findActive: function (index) {
            return index === false ? $() : this.tabs.eq(index);
        },

        _getIndex: function (index) {
            // meta-function to give users option to provide a href string instead of a numerical index.
            if (typeof index === "string") {
                index = this.anchors.index(this.anchors.filter("[href$='" + index + "']"));
            }

            return index;
        },

        _destroy: function () {
            if (this.xhr) {
                this.xhr.abort();
            }

            this.element.removeClass("ui-tabs ui-widget ui-widget-content ui-corner-all ui-tabs-collapsible");

            this.tablist
                .removeClass("ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all")
                .removeAttr("role");

            this.anchors
                .removeClass("ui-tabs-anchor")
                .removeAttr("role")
                .removeAttr("tabIndex")
                .removeUniqueId();

            this.tabs.add(this.panels).each(function () {
                if ($.data(this, "ui-tabs-destroy")) {
                    $(this).remove();
                } else {
                    $(this)
                        .removeClass("ui-state-default ui-state-active ui-state-disabled " +
                            "ui-corner-top ui-corner-bottom ui-widget-content ui-tabs-active ui-tabs-panel")
                        .removeAttr("tabIndex")
                        .removeAttr("aria-live")
                        .removeAttr("aria-busy")
                        .removeAttr("aria-selected")
                        .removeAttr("aria-labelledby")
                        .removeAttr("aria-hidden")
                        .removeAttr("aria-expanded")
                        .removeAttr("role");
                }
            });

            this.tabs.each(function () {
                var li = $(this),
                    prev = li.data("ui-tabs-aria-controls");
                if (prev) {
                    li
                        .attr("aria-controls", prev)
                        .removeData("ui-tabs-aria-controls");
                } else {
                    li.removeAttr("aria-controls");
                }
            });

            this.panels.show();

            if (this.options.heightStyle !== "content") {
                this.panels.css("height", "");
            }
        },

        enable: function (index) {
            var disabled = this.options.disabled;
            if (disabled === false) {
                return;
            }

            if (index === undefined) {
                disabled = false;
            } else {
                index = this._getIndex(index);
                if ($.isArray(disabled)) {
                    disabled = $.map(disabled, function (num) {
                        return num !== index ? num : null;
                    });
                } else {
                    disabled = $.map(this.tabs, function (li, num) {
                        return num !== index ? num : null;
                    });
                }
            }
            this._setupDisabled(disabled);
        },

        disable: function (index) {
            var disabled = this.options.disabled;
            if (disabled === true) {
                return;
            }

            if (index === undefined) {
                disabled = true;
            } else {
                index = this._getIndex(index);
                if ($.inArray(index, disabled) !== -1) {
                    return;
                }
                if ($.isArray(disabled)) {
                    disabled = $.merge([index], disabled).sort();
                } else {
                    disabled = [index];
                }
            }
            this._setupDisabled(disabled);
        },

        load: function (index, event) {
            index = this._getIndex(index);
            var that = this,
                tab = this.tabs.eq(index),
                anchor = tab.find(".ui-tabs-anchor"),
                panel = this._getPanelForTab(tab),
                eventData = {
                    tab: tab,
                    panel: panel
                };

            // not remote
            if (isLocal(anchor[0])) {
                return;
            }

            this.xhr = $.ajax(this._ajaxSettings(anchor, event, eventData));

            // support: jQuery <1.8
            // jQuery <1.8 returns false if the request is canceled in beforeSend,
            // but as of 1.8, $.ajax() always returns a jqXHR object.
            if (this.xhr && this.xhr.statusText !== "canceled") {
                tab.addClass("ui-tabs-loading");
                panel.attr("aria-busy", "true");

                this.xhr
                    .success(function (response) {
                        // support: jQuery <1.8
                        // http://bugs.jquery.com/ticket/11778
                        setTimeout(function () {
                            panel.html(response);
                            that._trigger("load", event, eventData);
                        }, 1);
                    })
                    .complete(function (jqXHR, status) {
                        // support: jQuery <1.8
                        // http://bugs.jquery.com/ticket/11778
                        setTimeout(function () {
                            if (status === "abort") {
                                that.panels.stop(false, true);
                            }

                            tab.removeClass("ui-tabs-loading");
                            panel.removeAttr("aria-busy");

                            if (jqXHR === that.xhr) {
                                delete that.xhr;
                            }
                        }, 1);
                    });
            }
        },

        _ajaxSettings: function (anchor, event, eventData) {
            var that = this;
            return {
                url: anchor.attr("href"),
                beforeSend: function (jqXHR, settings) {
                    return that._trigger("beforeLoad", event,
                        $.extend({ jqXHR: jqXHR, ajaxSettings: settings }, eventData));
                }
            };
        },

        _getPanelForTab: function (tab) {
            var id = $(tab).attr("aria-controls");
            return this.element.find(this._sanitizeSelector("#" + id));
        }
    });

})(jQuery);
