# Yahoo! UI Library

### Calendar 2.8.0r4

Yahoo! UI Library > calendar > Calendar.js (source view)
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    /**
    * The Calendar component is a UI control that enables users to choose one or more dates from a graphical calendar presented in a one-month or
    * multi-month interface. Calendars are generated entirely via script and can be navigated without any page refreshes.
    * @module    calendar
    * @title    Calendar
    * @namespace  YAHOO.widget
    * @requires  yahoo,dom,event
    */
    (function(){

        var Dom = YAHOO.util.Dom,
            Event = YAHOO.util.Event,
            Lang = YAHOO.lang,
            DateMath = YAHOO.widget.DateMath;

    /**
    * Calendar is the base class for the Calendar widget. In its most basic
    * implementation, it has the ability to render a calendar widget on the page
    * that can be manipulated to select a single date, move back and forth between
    * months and years.
    * <p>To construct the placeholder for the calendar widget, the code is as
    * follows:
    *   <xmp>
    *       <div id="calContainer"></div>
    *   </xmp>
    * </p>
    * <p>
    * <strong>NOTE: As of 2.4.0, the constructor's ID argument is optional.</strong>
    * The Calendar can be constructed by simply providing a container ID string,
    * or a reference to a container DIV HTMLElement (the element needs to exist
    * in the document).
    *
    * E.g.:
    *   <xmp>
    *       var c = new YAHOO.widget.Calendar("calContainer", configOptions);
    *   </xmp>
    * or:
    *   <xmp>
    *       var containerDiv = YAHOO.util.Dom.get("calContainer");
    *       var c = new YAHOO.widget.Calendar(containerDiv, configOptions);
    *   </xmp>
    * </p>
    * <p>
    * If not provided, the ID will be generated from the container DIV ID by adding an "_t" suffix.
    * For example if an ID is not provided, and the container's ID is "calContainer", the Calendar's ID will be set to "calContainer_t".
    * </p>
    *
    * @namespace YAHOO.widget
    * @class Calendar
    * @constructor
    * @param {String} id optional The id of the table element that will represent the Calendar widget. As of 2.4.0, this argument is optional.
    * @param {String | HTMLElement} container The id of the container div element that will wrap the Calendar table, or a reference to a DIV element which exists in the document.
    * @param {Object} config optional The configuration object containing the initial configuration values for the Calendar.
    */
    function Calendar(id, containerId, config) {
        this.init.apply(this, arguments);
    }

    /**
    * The path to be used for images loaded for the Calendar
    * @property YAHOO.widget.Calendar.IMG_ROOT
    * @static
    * @deprecated   You can now customize images by overriding the calclose, calnavleft and calnavright default CSS classes for the close icon, left arrow and right arrow respectively
    * @type String
    */
    Calendar.IMG_ROOT = null;

    /**
    * Type constant used for renderers to represent an individual date (M/D/Y)
    * @property YAHOO.widget.Calendar.DATE
    * @static
    * @final
    * @type String
    */
    Calendar.DATE = "D";

    /**
    * Type constant used for renderers to represent an individual date across any year (M/D)
    * @property YAHOO.widget.Calendar.MONTH_DAY
    * @static
    * @final
    * @type String
    */
    Calendar.MONTH_DAY = "MD";

    /**
    * Type constant used for renderers to represent a weekday
    * @property YAHOO.widget.Calendar.WEEKDAY
    * @static
    * @final
    * @type String
    */
    Calendar.WEEKDAY = "WD";

    /**
    * Type constant used for renderers to represent a range of individual dates (M/D/Y-M/D/Y)
    * @property YAHOO.widget.Calendar.RANGE
    * @static
    * @final
    * @type String
    */
    Calendar.RANGE = "R";

    /**
    * Type constant used for renderers to represent a month across any year
    * @property YAHOO.widget.Calendar.MONTH
    * @static
    * @final
    * @type String
    */
    Calendar.MONTH = "M";

    /**
    * Constant that represents the total number of date cells that are displayed in a given month
    * @property YAHOO.widget.Calendar.DISPLAY_DAYS
    * @static
    * @final
    * @type Number
    */
    Calendar.DISPLAY_DAYS = 42;

    /**
    * Constant used for halting the execution of the remainder of the render stack
    * @property YAHOO.widget.Calendar.STOP_RENDER
    * @static
    * @final
    * @type String
    */
    Calendar.STOP_RENDER = "S";

    /**
    * Constant used to represent short date field string formats (e.g. Tu or Feb)
    * @property YAHOO.widget.Calendar.SHORT
    * @static
    * @final
    * @type String
    */
    Calendar.SHORT = "short";

    /**
    * Constant used to represent long date field string formats (e.g. Monday or February)
    * @property YAHOO.widget.Calendar.LONG
    * @static
    * @final
    * @type String
    */
    Calendar.LONG = "long";

    /**
    * Constant used to represent medium date field string formats (e.g. Mon)
    * @property YAHOO.widget.Calendar.MEDIUM
    * @static
    * @final
    * @type String
    */
    Calendar.MEDIUM = "medium";

    /**
    * Constant used to represent single character date field string formats (e.g. M, T, W)
    * @property YAHOO.widget.Calendar.ONE_CHAR
    * @static
    * @final
    * @type String
    */
    Calendar.ONE_CHAR = "1char";

    /**
    * The set of default Config property keys and values for the Calendar.
    *
    * <p>
    * NOTE: This property is made public in order to allow users to change
    * the default values of configuration properties. Users should not
    * modify the key string, unless they are overriding the Calendar implementation
    * </p>
    *
    * <p>
    * The property is an object with key/value pairs, the key being the
    * uppercase configuration property name and the value being an object
    * literal with a key string property, and a value property, specifying the
    * default value of the property. To override a default value, you can set
    * the value property, for example, <code>YAHOO.widget.Calendar.DEFAULT_CONFIG.MULTI_SELECT.value = true;</code>
    *
    * @property YAHOO.widget.Calendar.DEFAULT_CONFIG
    * @static
    * @type Object
    */

    Calendar.DEFAULT_CONFIG = {
        YEAR_OFFSET : {key:"year_offset", value:0, supercedes:["pagedate", "selected", "mindate","maxdate"]},
        TODAY : {key:"today", value:new Date(), supercedes:["pagedate"]},
        PAGEDATE : {key:"pagedate", value:null},
        SELECTED : {key:"selected", value:[]},
        TITLE : {key:"title", value:""},
        CLOSE : {key:"close", value:false},
        IFRAME : {key:"iframe", value:(YAHOO.env.ua.ie && YAHOO.env.ua.ie <= 6) ? true : false},
        MINDATE : {key:"mindate", value:null},
        MAXDATE : {key:"maxdate", value:null},
        MULTI_SELECT : {key:"multi_select", value:false},
        START_WEEKDAY : {key:"start_weekday", value:0},
        SHOW_WEEKDAYS : {key:"show_weekdays", value:true},
        SHOW_WEEK_HEADER : {key:"show_week_header", value:false},
        SHOW_WEEK_FOOTER : {key:"show_week_footer", value:false},
        HIDE_BLANK_WEEKS : {key:"hide_blank_weeks", value:false},
        NAV_ARROW_LEFT: {key:"nav_arrow_left", value:null} ,
        NAV_ARROW_RIGHT : {key:"nav_arrow_right", value:null} ,
        MONTHS_SHORT : {key:"months_short", value:["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]},
        MONTHS_LONG: {key:"months_long", value:["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]},
        WEEKDAYS_1CHAR: {key:"weekdays_1char", value:["S", "M", "T", "W", "T", "F", "S"]},
        WEEKDAYS_SHORT: {key:"weekdays_short", value:["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"]},
        WEEKDAYS_MEDIUM: {key:"weekdays_medium", value:["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]},
        WEEKDAYS_LONG: {key:"weekdays_long", value:["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]},
        LOCALE_MONTHS:{key:"locale_months", value:"long"},
        LOCALE_WEEKDAYS:{key:"locale_weekdays", value:"short"},
        DATE_DELIMITER:{key:"date_delimiter", value:","},
        DATE_FIELD_DELIMITER:{key:"date_field_delimiter", value:"/"},
        DATE_RANGE_DELIMITER:{key:"date_range_delimiter", value:"-"},
        MY_MONTH_POSITION:{key:"my_month_position", value:1},
        MY_YEAR_POSITION:{key:"my_year_position", value:2},
        MD_MONTH_POSITION:{key:"md_month_position", value:1},
        MD_DAY_POSITION:{key:"md_day_position", value:2},
        MDY_MONTH_POSITION:{key:"mdy_month_position", value:1},
        MDY_DAY_POSITION:{key:"mdy_day_position", value:2},
        MDY_YEAR_POSITION:{key:"mdy_year_position", value:3},
        MY_LABEL_MONTH_POSITION:{key:"my_label_month_position", value:1},
        MY_LABEL_YEAR_POSITION:{key:"my_label_year_position", value:2},
        MY_LABEL_MONTH_SUFFIX:{key:"my_label_month_suffix", value:" "},
        MY_LABEL_YEAR_SUFFIX:{key:"my_label_year_suffix", value:""},
        NAV: {key:"navigator", value: null},
        STRINGS : {
            key:"strings",
            value: {
                previousMonth : "Previous Month",
                nextMonth : "Next Month",
                close: "Close"
            },
            supercedes : ["close", "title"]
        }
    };

    /**
    * The set of default Config property keys and values for the Calendar
    * @property YAHOO.widget.Calendar._DEFAULT_CONFIG
    * @deprecated Made public. See the public DEFAULT_CONFIG property for details
    * @final
    * @static
    * @private
    * @type Object
    */
    Calendar._DEFAULT_CONFIG = Calendar.DEFAULT_CONFIG;

    var DEF_CFG = Calendar.DEFAULT_CONFIG;

    /**
    * The set of Custom Event types supported by the Calendar
    * @property YAHOO.widget.Calendar._EVENT_TYPES
    * @final
    * @static
    * @private
    * @type Object
    */
    Calendar._EVENT_TYPES = {
        BEFORE_SELECT : "beforeSelect",
        SELECT : "select",
        BEFORE_DESELECT : "beforeDeselect",
        DESELECT : "deselect",
        CHANGE_PAGE : "changePage",
        BEFORE_RENDER : "beforeRender",
        RENDER : "render",
        BEFORE_DESTROY : "beforeDestroy",
        DESTROY : "destroy",
        RESET : "reset",
        CLEAR : "clear",
        BEFORE_HIDE : "beforeHide",
        HIDE : "hide",
        BEFORE_SHOW : "beforeShow",
        SHOW : "show",
        BEFORE_HIDE_NAV : "beforeHideNav",
        HIDE_NAV : "hideNav",
        BEFORE_SHOW_NAV : "beforeShowNav",
        SHOW_NAV : "showNav",
        BEFORE_RENDER_NAV : "beforeRenderNav",
        RENDER_NAV : "renderNav"
    };

    /**
    * The set of default style constants for the Calendar
    * @property YAHOO.widget.Calendar.STYLES
    * @static
    * @type Object An object with name/value pairs for the class name identifier/value.
    */
    Calendar.STYLES = {
        CSS_ROW_HEADER: "calrowhead",
        CSS_ROW_FOOTER: "calrowfoot",
        CSS_CELL : "calcell",
        CSS_CELL_SELECTOR : "selector",
        CSS_CELL_SELECTED : "selected",
        CSS_CELL_SELECTABLE : "selectable",
        CSS_CELL_RESTRICTED : "restricted",
        CSS_CELL_TODAY : "today",
        CSS_CELL_OOM : "oom",
        CSS_CELL_OOB : "previous",
        CSS_HEADER : "calheader",
        CSS_HEADER_TEXT : "calhead",
        CSS_BODY : "calbody",
        CSS_WEEKDAY_CELL : "calweekdaycell",
        CSS_WEEKDAY_ROW : "calweekdayrow",
        CSS_FOOTER : "calfoot",
        CSS_CALENDAR : "yui-calendar",
        CSS_SINGLE : "single",
        CSS_CONTAINER : "yui-calcontainer",
        CSS_NAV_LEFT : "calnavleft",
        CSS_NAV_RIGHT : "calnavright",
        CSS_NAV : "calnav",
        CSS_CLOSE : "calclose",
        CSS_CELL_TOP : "calcelltop",
        CSS_CELL_LEFT : "calcellleft",
        CSS_CELL_RIGHT : "calcellright",
        CSS_CELL_BOTTOM : "calcellbottom",
        CSS_CELL_HOVER : "calcellhover",
        CSS_CELL_HIGHLIGHT1 : "highlight1",
        CSS_CELL_HIGHLIGHT2 : "highlight2",
        CSS_CELL_HIGHLIGHT3 : "highlight3",
        CSS_CELL_HIGHLIGHT4 : "highlight4",
        CSS_WITH_TITLE: "withtitle",
        CSS_FIXED_SIZE: "fixedsize",
        CSS_LINK_CLOSE: "link-close"
    };

    /**
    * The set of default style constants for the Calendar
    * @property YAHOO.widget.Calendar._STYLES
    * @deprecated Made public. See the public STYLES property for details
    * @final
    * @static
    * @private
    * @type Object
    */
    Calendar._STYLES = Calendar.STYLES;

    Calendar.prototype = {

        /**
        * The configuration object used to set up the calendars various locale and style options.
        * @property Config
        * @private
        * @deprecated Configuration properties should be set by calling Calendar.cfg.setProperty.
        * @type Object
        */
        Config : null,

        /**
        * The parent CalendarGroup, only to be set explicitly by the parent group
        * @property parent
        * @type CalendarGroup
        */
        parent : null,

        /**
        * The index of this item in the parent group
        * @property index
        * @type Number
        */
        index : -1,

        /**
        * The collection of calendar table cells
        * @property cells
        * @type HTMLTableCellElement[]
        */
        cells : null,

        /**
        * The collection of calendar cell dates that is parallel to the cells collection. The array contains dates field arrays in the format of [YYYY, M, D].
        * @property cellDates
        * @type Array[](Number[])
        */
        cellDates : null,

        /**
        * The id that uniquely identifies this Calendar.
        * @property id
        * @type String
        */
        id : null,

        /**
        * The unique id associated with the Calendar's container
        * @property containerId
        * @type String
        */
        containerId: null,

        /**
        * The DOM element reference that points to this calendar's container element. The calendar will be inserted into this element when the shell is rendered.
        * @property oDomContainer
        * @type HTMLElement
        */
        oDomContainer : null,

        /**
        * A Date object representing today's date.
        * @deprecated Use the "today" configuration property
        * @property today
        * @type Date
        */
        today : null,

        /**
        * The list of render functions, along with required parameters, used to render cells.
        * @property renderStack
        * @type Array[]
        */
        renderStack : null,

        /**
        * A copy of the initial render functions created before rendering.
        * @property _renderStack
        * @private
        * @type Array
        */
        _renderStack : null,

        /**
        * A reference to the CalendarNavigator instance created for this Calendar.
        * Will be null if the "navigator" configuration property has not been set
        * @property oNavigator
        * @type CalendarNavigator
        */
        oNavigator : null,

        /**
        * The private list of initially selected dates.
        * @property _selectedDates
        * @private
        * @type Array
        */
        _selectedDates : null,

        /**
        * A map of DOM event handlers to attach to cells associated with specific CSS class names
        * @property domEventMap
        * @type Object
        */
        domEventMap : null,

        /**
         * Protected helper used to parse Calendar constructor/init arguments.
         *
         * As of 2.4.0, Calendar supports a simpler constructor
         * signature. This method reconciles arguments
         * received in the pre 2.4.0 and 2.4.0 formats.
         *
         * @protected
         * @method _parseArgs
         * @param {Array} Function "arguments" array
         * @return {Object} Object with id, container, config properties containing
         * the reconciled argument values.
         **/
        _parseArgs : function(args) {
            /*
               2.4.0 Constructors signatures

               new Calendar(String)
               new Calendar(HTMLElement)
               new Calendar(String, ConfigObject)
               new Calendar(HTMLElement, ConfigObject)

               Pre 2.4.0 Constructor signatures

               new Calendar(String, String)
               new Calendar(String, HTMLElement)
               new Calendar(String, String, ConfigObject)
               new Calendar(String, HTMLElement, ConfigObject)
             */
            var nArgs = {id:null, container:null, config:null};

            if (args && args.length && args.length > 0) {
                switch (args.length) {
                    case 1:
                        nArgs.id = null;
                        nArgs.container = args[0];
                        nArgs.config = null;
                        break;
                    case 2:
                        if (Lang.isObject(args[1]) && !args[1].tagName && !(args[1] instanceof String)) {
                            nArgs.id = null;
                            nArgs.container = args[0];
                            nArgs.config = args[1];
                        } else {
                            nArgs.id = args[0];
                            nArgs.container = args[1];
                            nArgs.config = null;
                        }
                        break;
                    default: // 3+
                        nArgs.id = args[0];
                        nArgs.container = args[1];
                        nArgs.config = args[2];
                        break;
                }
            } else {
                this.logger.log("Invalid constructor/init arguments", "error");
            }
            return nArgs;
        },

        /**
        * Initializes the Calendar widget.
        * @method init
        *
        * @param {String} id optional The id of the table element that will represent the Calendar widget. As of 2.4.0, this argument is optional.
        * @param {String | HTMLElement} container The id of the container div element that will wrap the Calendar table, or a reference to a DIV element which exists in the document.
        * @param {Object} config optional The configuration object containing the initial configuration values for the Calendar.
        */
        init : function(id, container, config) {
            // Normalize 2.4.0, pre 2.4.0 args
            var nArgs = this._parseArgs(arguments);

            id = nArgs.id;
            container = nArgs.container;
            config = nArgs.config;

            this.oDomContainer = Dom.get(container);
            if (!this.oDomContainer) { this.logger.log("Container not found in document.", "error"); }

            if (!this.oDomContainer.id) {
                this.oDomContainer.id = Dom.generateId();
            }
            if (!id) {
                id = this.oDomContainer.id + "_t";
            }

            this.id = id;
            this.containerId = this.oDomContainer.id;

            this.logger = new YAHOO.widget.LogWriter("Calendar " + this.id);
            this.initEvents();

            /**
            * The Config object used to hold the configuration variables for the Calendar
            * @property cfg
            * @type YAHOO.util.Config
            */
            this.cfg = new YAHOO.util.Config(this);

            /**
            * The local object which contains the Calendar's options
            * @property Options
            * @type Object
            */
            this.Options = {};

            /**
            * The local object which contains the Calendar's locale settings
            * @property Locale
            * @type Object
            */
            this.Locale = {};

            this.initStyles();

            Dom.addClass(this.oDomContainer, this.Style.CSS_CONTAINER);
            Dom.addClass(this.oDomContainer, this.Style.CSS_SINGLE);

            this.cellDates = [];
            this.cells = [];
            this.renderStack = [];
            this._renderStack = [];

            this.setupConfig();

            if (config) {
                this.cfg.applyConfig(config, true);
            }

            this.cfg.fireQueue();

            this.today = this.cfg.getProperty("today");
        },

        /**
        * Default Config listener for the iframe property. If the iframe config property is set to true,
        * renders the built-in IFRAME shim if the container is relatively or absolutely positioned.
        *
        * @method configIframe
        */
        configIframe : function(type, args, obj) {
            var useIframe = args[0];

            if (!this.parent) {
                if (Dom.inDocument(this.oDomContainer)) {
                    if (useIframe) {
                        var pos = Dom.getStyle(this.oDomContainer, "position");

                        if (pos == "absolute" || pos == "relative") {

                            if (!Dom.inDocument(this.iframe)) {
                                this.iframe = document.createElement("iframe");
                                this.iframe.src = "javascript:false;";

                                Dom.setStyle(this.iframe, "opacity", "0");

                                if (YAHOO.env.ua.ie && YAHOO.env.ua.ie <= 6) {
                                    Dom.addClass(this.iframe, this.Style.CSS_FIXED_SIZE);
                                }

                                this.oDomContainer.insertBefore(this.iframe, this.oDomContainer.firstChild);
                            }
                        }
                    } else {
                        if (this.iframe) {
                            if (this.iframe.parentNode) {
                                this.iframe.parentNode.removeChild(this.iframe);
                            }
                            this.iframe = null;
                        }
                    }
                }
            }
        },

        /**
        * Default handler for the "title" property
        * @method configTitle
        */
        configTitle : function(type, args, obj) {
            var title = args[0];

            // "" disables title bar
            if (title) {
                this.createTitleBar(title);
            } else {
                var close = this.cfg.getProperty(DEF_CFG.CLOSE.key);
                if (!close) {
                    this.removeTitleBar();
                } else {
                    this.createTitleBar("&#160;");
                }
            }
        },

        /**
        * Default handler for the "close" property
        * @method configClose
        */
        configClose : function(type, args, obj) {
            var close = args[0],
                title = this.cfg.getProperty(DEF_CFG.TITLE.key);

            if (close) {
                if (!title) {
                    this.createTitleBar("&#160;");
                }
                this.createCloseButton();
            } else {
                this.removeCloseButton();
                if (!title) {
                    this.removeTitleBar();
                }
            }
        },

        /**
        * Initializes Calendar's built-in CustomEvents
        * @method initEvents
        */
        initEvents : function() {

            var defEvents = Calendar._EVENT_TYPES,
                CE = YAHOO.util.CustomEvent,
                cal = this; // To help with minification

            /**
            * Fired before a date selection is made
            * @event beforeSelectEvent
            */
            cal.beforeSelectEvent = new CE(defEvents.BEFORE_SELECT);

            /**
            * Fired when a date selection is made
            * @event selectEvent
            * @param {Array} Array of Date field arrays in the format [YYYY, MM, DD].
            */
            cal.selectEvent = new CE(defEvents.SELECT);

            /**
            * Fired before a date or set of dates is deselected
            * @event beforeDeselectEvent
            */
            cal.beforeDeselectEvent = new CE(defEvents.BEFORE_DESELECT);

            /**
            * Fired when a date or set of dates is deselected
            * @event deselectEvent
            * @param {Array} Array of Date field arrays in the format [YYYY, MM, DD].
            */
            cal.deselectEvent = new CE(defEvents.DESELECT);

            /**
            * Fired when the Calendar page is changed
            * @event changePageEvent
            * @param {Date} prevDate The date before the page was changed
            * @param {Date} newDate The date after the page was changed
            */
            cal.changePageEvent = new CE(defEvents.CHANGE_PAGE);

            /**
            * Fired before the Calendar is rendered
            * @event beforeRenderEvent
            */
            cal.beforeRenderEvent = new CE(defEvents.BEFORE_RENDER);

            /**
            * Fired when the Calendar is rendered
            * @event renderEvent
            */
            cal.renderEvent = new CE(defEvents.RENDER);

            /**
            * Fired just before the Calendar is to be destroyed
            * @event beforeDestroyEvent
            */
            cal.beforeDestroyEvent = new CE(defEvents.BEFORE_DESTROY);

            /**
            * Fired after the Calendar is destroyed. This event should be used
            * for notification only. When this event is fired, important Calendar instance
            * properties, dom references and event listeners have already been
            * removed/dereferenced, and hence the Calendar instance is not in a usable
            * state.
            *
            * @event destroyEvent
            */
            cal.destroyEvent = new CE(defEvents.DESTROY);

            /**
            * Fired when the Calendar is reset
            * @event resetEvent
            */
            cal.resetEvent = new CE(defEvents.RESET);

            /**
            * Fired when the Calendar is cleared
            * @event clearEvent
            */
            cal.clearEvent = new CE(defEvents.CLEAR);

            /**
            * Fired just before the Calendar is to be shown
            * @event beforeShowEvent
            */
            cal.beforeShowEvent = new CE(defEvents.BEFORE_SHOW);

            /**
            * Fired after the Calendar is shown
            * @event showEvent
            */
            cal.showEvent = new CE(defEvents.SHOW);

            /**
            * Fired just before the Calendar is to be hidden
            * @event beforeHideEvent
            */
            cal.beforeHideEvent = new CE(defEvents.BEFORE_HIDE);

            /**
            * Fired after the Calendar is hidden
            * @event hideEvent
            */
            cal.hideEvent = new CE(defEvents.HIDE);

            /**
            * Fired just before the CalendarNavigator is to be shown
            * @event beforeShowNavEvent
            */
            cal.beforeShowNavEvent = new CE(defEvents.BEFORE_SHOW_NAV);

            /**
            * Fired after the CalendarNavigator is shown
            * @event showNavEvent
            */
            cal.showNavEvent = new CE(defEvents.SHOW_NAV);

            /**
            * Fired just before the CalendarNavigator is to be hidden
            * @event beforeHideNavEvent
            */
            cal.beforeHideNavEvent = new CE(defEvents.BEFORE_HIDE_NAV);

            /**
            * Fired after the CalendarNavigator is hidden
            * @event hideNavEvent
            */
            cal.hideNavEvent = new CE(defEvents.HIDE_NAV);

            /**
            * Fired just before the CalendarNavigator is to be rendered
            * @event beforeRenderNavEvent
            */
            cal.beforeRenderNavEvent = new CE(defEvents.BEFORE_RENDER_NAV);

            /**
            * Fired after the CalendarNavigator is rendered
            * @event renderNavEvent
            */
            cal.renderNavEvent = new CE(defEvents.RENDER_NAV);

            cal.beforeSelectEvent.subscribe(cal.onBeforeSelect, this, true);
            cal.selectEvent.subscribe(cal.onSelect, this, true);
            cal.beforeDeselectEvent.subscribe(cal.onBeforeDeselect, this, true);
            cal.deselectEvent.subscribe(cal.onDeselect, this, true);
            cal.changePageEvent.subscribe(cal.onChangePage, this, true);
            cal.renderEvent.subscribe(cal.onRender, this, true);
            cal.resetEvent.subscribe(cal.onReset, this, true);
            cal.clearEvent.subscribe(cal.onClear, this, true);
        },

        /**
        * The default event handler for clicks on the "Previous Month" navigation UI
        *
        * @method doPreviousMonthNav
        * @param {DOMEvent} e The DOM event
        * @param {Calendar} cal A reference to the calendar
        */
        doPreviousMonthNav : function(e, cal) {
            Event.preventDefault(e);
            // previousMonth invoked in a timeout, to allow
            // event to bubble up, with correct target. Calling
            // previousMonth, will call render which will remove
            // HTML which generated the event, resulting in an
            // invalid event target in certain browsers.
            setTimeout(function() {
                cal.previousMonth();
                var navs = Dom.getElementsByClassName(cal.Style.CSS_NAV_LEFT, "a", cal.oDomContainer);
                if (navs && navs[0]) {
                    try {
                        navs[0].focus();
                    } catch (ex) {
                        // ignore
                    }
                }
            }, 0);
        },

        /**
         * The default event handler for clicks on the "Next Month" navigation UI
         *
         * @method doNextMonthNav
         * @param {DOMEvent} e The DOM event
         * @param {Calendar} cal A reference to the calendar
         */
        doNextMonthNav : function(e, cal) {
            Event.preventDefault(e);
            setTimeout(function() {
                cal.nextMonth();
                var navs = Dom.getElementsByClassName(cal.Style.CSS_NAV_RIGHT, "a", cal.oDomContainer);
                if (navs && navs[0]) {
                    try {
                        navs[0].focus();
                    } catch (ex) {
                        // ignore
                    }
                }
            }, 0);
        },

        /**
        * The default event handler for date cell selection. Currently attached to
        * the Calendar's bounding box, referenced by it's <a href="#property_oDomContainer">oDomContainer</a> property.
        *
        * @method doSelectCell
        * @param {DOMEvent} e The DOM event
        * @param {Calendar} cal A reference to the calendar
        */
        doSelectCell : function(e, cal) {
            var cell, d, date, index;

            var target = Event.getTarget(e),
                tagName = target.tagName.toLowerCase(),
                defSelector = false;

            while (tagName != "td" && !Dom.hasClass(target, cal.Style.CSS_CELL_SELECTABLE)) {

                if (!defSelector && tagName == "a" && Dom.hasClass(target, cal.Style.CSS_CELL_SELECTOR)) {
                    defSelector = true;
                }

                target = target.parentNode;
                tagName = target.tagName.toLowerCase();

                if (target == this.oDomContainer || tagName == "html") {
                    return;
                }
            }

            if (defSelector) {
                // Stop link href navigation for default renderer
                Event.preventDefault(e);
            }

            cell = target;

            if (Dom.hasClass(cell, cal.Style.CSS_CELL_SELECTABLE)) {
                index = cal.getIndexFromId(cell.id);
                if (index > -1) {
                    d = cal.cellDates[index];
                    if (d) {
                        date = DateMath.getDate(d[0],d[1]-1,d[2]);

                        var link;

                        cal.logger.log("Selecting cell " + index + " via click", "info");
                        if (cal.Options.MULTI_SELECT) {
                            link = cell.getElementsByTagName("a")[0];
                            if (link) {
                                link.blur();
                            }

                            var cellDate = cal.cellDates[index];
                            var cellDateIndex = cal._indexOfSelectedFieldArray(cellDate);

                            if (cellDateIndex > -1) {
                                cal.deselectCell(index);
                            } else {
                                cal.selectCell(index);
                            }

                        } else {
                            link = cell.getElementsByTagName("a")[0];
                            if (link) {
                                link.blur();
                            }
                            cal.selectCell(index);
                        }
                    }
                }
            }
        },

        /**
        * The event that is executed when the user hovers over a cell
        * @method doCellMouseOver
        * @param {DOMEvent} e The event
        * @param {Calendar} cal A reference to the calendar passed by the Event utility
        */
        doCellMouseOver : function(e, cal) {
            var target;
            if (e) {
                target = Event.getTarget(e);
            } else {
                target = this;
            }

            while (target.tagName && target.tagName.toLowerCase() != "td") {
                target = target.parentNode;
                if (!target.tagName || target.tagName.toLowerCase() == "html") {
                    return;
                }
            }

            if (Dom.hasClass(target, cal.Style.CSS_CELL_SELECTABLE)) {
                Dom.addClass(target, cal.Style.CSS_CELL_HOVER);
            }
        },

        /**
        * The event that is executed when the user moves the mouse out of a cell
        * @method doCellMouseOut
        * @param {DOMEvent} e The event
        * @param {Calendar} cal A reference to the calendar passed by the Event utility
        */
        doCellMouseOut : function(e, cal) {
            var target;
            if (e) {
                target = Event.getTarget(e);
            } else {
                target = this;
            }

            while (target.tagName && target.tagName.toLowerCase() != "td") {
                target = target.parentNode;
                if (!target.tagName || target.tagName.toLowerCase() == "html") {
                    return;
                }
            }

            if (Dom.hasClass(target, cal.Style.CSS_CELL_SELECTABLE)) {
                Dom.removeClass(target, cal.Style.CSS_CELL_HOVER);
            }
        },

        setupConfig : function() {

            var cfg = this.cfg;

            /**
            * The date to use to represent "Today".
            *
            * @config today
            * @type Date
            * @default The client side date (new Date()) when the Calendar is instantiated.
            */
            cfg.addProperty(DEF_CFG.TODAY.key, { value: new Date(DEF_CFG.TODAY.value.getTime()), supercedes:DEF_CFG.TODAY.supercedes, handler:this.configToday, suppressEvent:true } );

            /**
            * The month/year representing the current visible Calendar date (mm/yyyy)
            * @config pagedate
            * @type String | Date
            * @default Today's date
            */
            cfg.addProperty(DEF_CFG.PAGEDATE.key, { value: DEF_CFG.PAGEDATE.value || new Date(DEF_CFG.TODAY.value.getTime()), handler:this.configPageDate } );

            /**
            * The date or range of dates representing the current Calendar selection
            * @config selected
            * @type String
            * @default []
            */
            cfg.addProperty(DEF_CFG.SELECTED.key, { value:DEF_CFG.SELECTED.value.concat(), handler:this.configSelected } );

            /**
            * The title to display above the Calendar's month header
            * @config title
            * @type String
            * @default ""
            */
            cfg.addProperty(DEF_CFG.TITLE.key, { value:DEF_CFG.TITLE.value, handler:this.configTitle } );

            /**
            * Whether or not a close button should be displayed for this Calendar
            * @config close
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEF_CFG.CLOSE.key, { value:DEF_CFG.CLOSE.value, handler:this.configClose } );

            /**
            * Whether or not an iframe shim should be placed under the Calendar to prevent select boxes from bleeding through in Internet Explorer 6 and below.
            * This property is enabled by default for IE6 and below. It is disabled by default for other browsers for performance reasons, but can be
            * enabled if required.
            *
            * @config iframe
            * @type Boolean
            * @default true for IE6 and below, false for all other browsers
            */
            cfg.addProperty(DEF_CFG.IFRAME.key, { value:DEF_CFG.IFRAME.value, handler:this.configIframe, validator:cfg.checkBoolean } );

            /**
            * The minimum selectable date in the current Calendar (mm/dd/yyyy)
            * @config mindate
            * @type String | Date
            * @default null
            */
            cfg.addProperty(DEF_CFG.MINDATE.key, { value:DEF_CFG.MINDATE.value, handler:this.configMinDate } );

            /**
            * The maximum selectable date in the current Calendar (mm/dd/yyyy)
            * @config maxdate
            * @type String | Date
            * @default null
            */
            cfg.addProperty(DEF_CFG.MAXDATE.key, { value:DEF_CFG.MAXDATE.value, handler:this.configMaxDate } );

            // Options properties

            /**
            * True if the Calendar should allow multiple selections. False by default.
            * @config MULTI_SELECT
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEF_CFG.MULTI_SELECT.key, { value:DEF_CFG.MULTI_SELECT.value, handler:this.configOptions, validator:cfg.checkBoolean } );

            /**
            * The weekday the week begins on. Default is 0 (Sunday = 0, Monday = 1 ... Saturday = 6).
            * @config START_WEEKDAY
            * @type number
            * @default 0
            */
            cfg.addProperty(DEF_CFG.START_WEEKDAY.key, { value:DEF_CFG.START_WEEKDAY.value, handler:this.configOptions, validator:cfg.checkNumber  } );

            /**
            * True if the Calendar should show weekday labels. True by default.
            * @config SHOW_WEEKDAYS
            * @type Boolean
            * @default true
            */
            cfg.addProperty(DEF_CFG.SHOW_WEEKDAYS.key, { value:DEF_CFG.SHOW_WEEKDAYS.value, handler:this.configOptions, validator:cfg.checkBoolean  } );

            /**
            * True if the Calendar should show week row headers. False by default.
            * @config SHOW_WEEK_HEADER
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEF_CFG.SHOW_WEEK_HEADER.key, { value:DEF_CFG.SHOW_WEEK_HEADER.value, handler:this.configOptions, validator:cfg.checkBoolean } );

            /**
            * True if the Calendar should show week row footers. False by default.
            * @config SHOW_WEEK_FOOTER
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEF_CFG.SHOW_WEEK_FOOTER.key,{ value:DEF_CFG.SHOW_WEEK_FOOTER.value, handler:this.configOptions, validator:cfg.checkBoolean } );

            /**
            * True if the Calendar should suppress weeks that are not a part of the current month. False by default.
            * @config HIDE_BLANK_WEEKS
            * @type Boolean
            * @default false
            */
            cfg.addProperty(DEF_CFG.HIDE_BLANK_WEEKS.key, { value:DEF_CFG.HIDE_BLANK_WEEKS.value, handler:this.configOptions, validator:cfg.checkBoolean } );

            /**
            * The image that should be used for the left navigation arrow.
            * @config NAV_ARROW_LEFT
            * @type String
            * @deprecated You can customize the image by overriding the default CSS class for the left arrow - "calnavleft"
            * @default null
            */
            cfg.addProperty(DEF_CFG.NAV_ARROW_LEFT.key, { value:DEF_CFG.NAV_ARROW_LEFT.value, handler:this.configOptions } );

            /**
            * The image that should be used for the right navigation arrow.
            * @config NAV_ARROW_RIGHT
            * @type String
            * @deprecated You can customize the image by overriding the default CSS class for the right arrow - "calnavright"
            * @default null
            */
            cfg.addProperty(DEF_CFG.NAV_ARROW_RIGHT.key, { value:DEF_CFG.NAV_ARROW_RIGHT.value, handler:this.configOptions } );

            // Locale properties

            /**
            * The short month labels for the current locale.
            * @config MONTHS_SHORT
            * @type String[]
            * @default ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
            */
            cfg.addProperty(DEF_CFG.MONTHS_SHORT.key, { value:DEF_CFG.MONTHS_SHORT.value, handler:this.configLocale } );

            /**
            * The long month labels for the current locale.
            * @config MONTHS_LONG
            * @type String[]
            * @default ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
            */
            cfg.addProperty(DEF_CFG.MONTHS_LONG.key,  { value:DEF_CFG.MONTHS_LONG.value, handler:this.configLocale } );

            /**
            * The 1-character weekday labels for the current locale.
            * @config WEEKDAYS_1CHAR
            * @type String[]
            * @default ["S", "M", "T", "W", "T", "F", "S"]
            */
            cfg.addProperty(DEF_CFG.WEEKDAYS_1CHAR.key, { value:DEF_CFG.WEEKDAYS_1CHAR.value, handler:this.configLocale } );

            /**
            * The short weekday labels for the current locale.
            * @config WEEKDAYS_SHORT
            * @type String[]
            * @default ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"]
            */
            cfg.addProperty(DEF_CFG.WEEKDAYS_SHORT.key, { value:DEF_CFG.WEEKDAYS_SHORT.value, handler:this.configLocale } );

            /**
            * The medium weekday labels for the current locale.
            * @config WEEKDAYS_MEDIUM
            * @type String[]
            * @default ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
            */
            cfg.addProperty(DEF_CFG.WEEKDAYS_MEDIUM.key, { value:DEF_CFG.WEEKDAYS_MEDIUM.value, handler:this.configLocale } );

            /**
            * The long weekday labels for the current locale.
            * @config WEEKDAYS_LONG
            * @type String[]
            * @default ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"]
            */
            cfg.addProperty(DEF_CFG.WEEKDAYS_LONG.key, { value:DEF_CFG.WEEKDAYS_LONG.value, handler:this.configLocale } );

            /**
            * Refreshes the locale values used to build the Calendar.
            * @method refreshLocale
            * @private
            */
            var refreshLocale = function() {
                cfg.refireEvent(DEF_CFG.LOCALE_MONTHS.key);
                cfg.refireEvent(DEF_CFG.LOCALE_WEEKDAYS.key);
            };

            cfg.subscribeToConfigEvent(DEF_CFG.START_WEEKDAY.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.MONTHS_SHORT.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.MONTHS_LONG.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.WEEKDAYS_1CHAR.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.WEEKDAYS_SHORT.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.WEEKDAYS_MEDIUM.key, refreshLocale, this, true);
            cfg.subscribeToConfigEvent(DEF_CFG.WEEKDAYS_LONG.key, refreshLocale, this, true);

            /**
            * The setting that determines which length of month labels should be used. Possible values are "short" and "long".
            * @config LOCALE_MONTHS
            * @type String
            * @default "long"
            */
            cfg.addProperty(DEF_CFG.LOCALE_MONTHS.key, { value:DEF_CFG.LOCALE_MONTHS.value, handler:this.configLocaleValues } );

            /**
            * The setting that determines which length of weekday labels should be used. Possible values are "1char", "short", "medium", and "long".
            * @config LOCALE_WEEKDAYS
            * @type String
            * @default "short"
            */
            cfg.addProperty(DEF_CFG.LOCALE_WEEKDAYS.key, { value:DEF_CFG.LOCALE_WEEKDAYS.value, handler:this.configLocaleValues } );

            /**
            * The positive or negative year offset from the Gregorian calendar year (assuming a January 1st rollover) to
            * be used when displaying and parsing dates. NOTE: All JS Date objects returned by methods, or expected as input by
            * methods will always represent the Gregorian year, in order to maintain date/month/week values.
            *
            * @config YEAR_OFFSET
            * @type Number
            * @default 0
            */
            cfg.addProperty(DEF_CFG.YEAR_OFFSET.key, { value:DEF_CFG.YEAR_OFFSET.value, supercedes:DEF_CFG.YEAR_OFFSET.supercedes, handler:this.configLocale  } );

            /**
            * The value used to delimit individual dates in a date string passed to various Calendar functions.
            * @config DATE_DELIMITER
            * @type String
            * @default ","
            */
            cfg.addProperty(DEF_CFG.DATE_DELIMITER.key,  { value:DEF_CFG.DATE_DELIMITER.value, handler:this.configLocale } );

            /**
            * The value used to delimit date fields in a date string passed to various Calendar functions.
            * @config DATE_FIELD_DELIMITER
            * @type String
            * @default "/"
            */
            cfg.addProperty(DEF_CFG.DATE_FIELD_DELIMITER.key, { value:DEF_CFG.DATE_FIELD_DELIMITER.value, handler:this.configLocale } );

            /**
            * The value used to delimit date ranges in a date string passed to various Calendar functions.
            * @config DATE_RANGE_DELIMITER
            * @type String
            * @default "-"
            */
            cfg.addProperty(DEF_CFG.DATE_RANGE_DELIMITER.key, { value:DEF_CFG.DATE_RANGE_DELIMITER.value, handler:this.configLocale } );

            /**
            * The position of the month in a month/year date string
            * @config MY_MONTH_POSITION
            * @type Number
            * @default 1
            */
            cfg.addProperty(DEF_CFG.MY_MONTH_POSITION.key, { value:DEF_CFG.MY_MONTH_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the year in a month/year date string
            * @config MY_YEAR_POSITION
            * @type Number
            * @default 2
            */
            cfg.addProperty(DEF_CFG.MY_YEAR_POSITION.key, { value:DEF_CFG.MY_YEAR_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the month in a month/day date string
            * @config MD_MONTH_POSITION
            * @type Number
            * @default 1
            */
            cfg.addProperty(DEF_CFG.MD_MONTH_POSITION.key, { value:DEF_CFG.MD_MONTH_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the day in a month/year date string
            * @config MD_DAY_POSITION
            * @type Number
            * @default 2
            */
            cfg.addProperty(DEF_CFG.MD_DAY_POSITION.key,  { value:DEF_CFG.MD_DAY_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the month in a month/day/year date string
            * @config MDY_MONTH_POSITION
            * @type Number
            * @default 1
            */
            cfg.addProperty(DEF_CFG.MDY_MONTH_POSITION.key, { value:DEF_CFG.MDY_MONTH_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the day in a month/day/year date string
            * @config MDY_DAY_POSITION
            * @type Number
            * @default 2
            */
            cfg.addProperty(DEF_CFG.MDY_DAY_POSITION.key, { value:DEF_CFG.MDY_DAY_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the year in a month/day/year date string
            * @config MDY_YEAR_POSITION
            * @type Number
            * @default 3
            */
            cfg.addProperty(DEF_CFG.MDY_YEAR_POSITION.key, { value:DEF_CFG.MDY_YEAR_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the month in the month year label string used as the Calendar header
            * @config MY_LABEL_MONTH_POSITION
            * @type Number
            * @default 1
            */
            cfg.addProperty(DEF_CFG.MY_LABEL_MONTH_POSITION.key, { value:DEF_CFG.MY_LABEL_MONTH_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The position of the year in the month year label string used as the Calendar header
            * @config MY_LABEL_YEAR_POSITION
            * @type Number
            * @default 2
            */
            cfg.addProperty(DEF_CFG.MY_LABEL_YEAR_POSITION.key, { value:DEF_CFG.MY_LABEL_YEAR_POSITION.value, handler:this.configLocale, validator:cfg.checkNumber } );

            /**
            * The suffix used after the month when rendering the Calendar header
            * @config MY_LABEL_MONTH_SUFFIX
            * @type String
            * @default " "
            */
            cfg.addProperty(DEF_CFG.MY_LABEL_MONTH_SUFFIX.key, { value:DEF_CFG.MY_LABEL_MONTH_SUFFIX.value, handler:this.configLocale } );

            /**
            * The suffix used after the year when rendering the Calendar header
            * @config MY_LABEL_YEAR_SUFFIX
            * @type String
            * @default ""
            */
            cfg.addProperty(DEF_CFG.MY_LABEL_YEAR_SUFFIX.key, { value:DEF_CFG.MY_LABEL_YEAR_SUFFIX.value, handler:this.configLocale } );

            /**
            * Configuration for the Month/Year CalendarNavigator UI which allows the user to jump directly to a
            * specific Month/Year without having to scroll sequentially through months.
            * <p>
            * Setting this property to null (default value) or false, will disable the CalendarNavigator UI.
            * </p>
            * <p>
            * Setting this property to true will enable the CalendarNavigatior UI with the default CalendarNavigator configuration values.
            * </p>
            * <p>
            * This property can also be set to an object literal containing configuration properties for the CalendarNavigator UI.
            * The configuration object expects the the following case-sensitive properties, with the "strings" property being a nested object.
            * Any properties which are not provided will use the default values (defined in the CalendarNavigator class).
            * </p>
            * <dl>
            * <dt>strings</dt>
            * <dd><em>Object</em> :  An object with the properties shown below, defining the string labels to use in the Navigator's UI
            *     <dl>
            *         <dt>month</dt><dd><em>String</em> : The string to use for the month label. Defaults to "Month".</dd>
            *         <dt>year</dt><dd><em>String</em> : The string to use for the year label. Defaults to "Year".</dd>
            *         <dt>submit</dt><dd><em>String</em> : The string to use for the submit button label. Defaults to "Okay".</dd>
            *         <dt>cancel</dt><dd><em>String</em> : The string to use for the cancel button label. Defaults to "Cancel".</dd>
            *         <dt>invalidYear</dt><dd><em>String</em> : The string to use for invalid year values. Defaults to "Year needs to be a number".</dd>
            *     </dl>
            * </dd>
            * <dt>monthFormat</dt><dd><em>String</em> : The month format to use. Either YAHOO.widget.Calendar.LONG, or YAHOO.widget.Calendar.SHORT. Defaults to YAHOO.widget.Calendar.LONG</dd>
            * <dt>initialFocus</dt><dd><em>String</em> : Either "year" or "month" specifying which input control should get initial focus. Defaults to "year"</dd>
            * </dl>
            * <p>E.g.</p>
            * <pre>
            * var navConfig = {
            *   strings: {
            *    month:"Calendar Month",
            *    year:"Calendar Year",
            *    submit: "Submit",
            *    cancel: "Cancel",
            *    invalidYear: "Please enter a valid year"
            *   },
            *   monthFormat: YAHOO.widget.Calendar.SHORT,
            *   initialFocus: "month"
            * }
            * </pre>
            * @config navigator
            * @type {Object|Boolean}
            * @default null
            */
            cfg.addProperty(DEF_CFG.NAV.key, { value:DEF_CFG.NAV.value, handler:this.configNavigator } );

            /**
             * The map of UI strings which the Calendar UI uses.
             *
             * @config strings
             * @type {Object}
             * @default An object with the properties shown below:
             *     <dl>
             *         <dt>previousMonth</dt><dd><em>String</em> : The string to use for the "Previous Month" navigation UI. Defaults to "Previous Month".</dd>
             *         <dt>nextMonth</dt><dd><em>String</em> : The string to use for the "Next Month" navigation UI. Defaults to "Next Month".</dd>
             *         <dt>close</dt><dd><em>String</em> : The string to use for the close button label. Defaults to "Close".</dd>
             *     </dl>
             */
            cfg.addProperty(DEF_CFG.STRINGS.key, {
                value:DEF_CFG.STRINGS.value,
                handler:this.configStrings,
                validator: function(val) {
                    return Lang.isObject(val);
                },
                supercedes:DEF_CFG.STRINGS.supercedes
            });
        },

        /**
        * The default handler for the "strings" property
        * @method configStrings
        */
        configStrings : function(type, args, obj) {
            var val = Lang.merge(DEF_CFG.STRINGS.value, args[0]);
            this.cfg.setProperty(DEF_CFG.STRINGS.key, val, true);
        },

        /**
        * The default handler for the "pagedate" property
        * @method configPageDate
        */
        configPageDate : function(type, args, obj) {
            this.cfg.setProperty(DEF_CFG.PAGEDATE.key, this._parsePageDate(args[0]), true);
        },

        /**
        * The default handler for the "mindate" property
        * @method configMinDate
        */
        configMinDate : function(type, args, obj) {
            var val = args[0];
            if (Lang.isString(val)) {
                val = this._parseDate(val);
                this.cfg.setProperty(DEF_CFG.MINDATE.key, DateMath.getDate(val[0],(val[1]-1),val[2]));
            }
        },

        /**
        * The default handler for the "maxdate" property
        * @method configMaxDate
        */
        configMaxDate : function(type, args, obj) {
            var val = args[0];
            if (Lang.isString(val)) {
                val = this._parseDate(val);
                this.cfg.setProperty(DEF_CFG.MAXDATE.key, DateMath.getDate(val[0],(val[1]-1),val[2]));
            }
        },

        /**
        * The default handler for the "today" property
        * @method configToday
        */
        configToday : function(type, args, obj) {
            // Only do this for initial set. Changing the today property after the initial
            // set, doesn't affect pagedate
            var val = args[0];
            if (Lang.isString(val)) {
                val = this._parseDate(val);
            }
            var today = DateMath.clearTime(val);
            if (!this.cfg.initialConfig[DEF_CFG.PAGEDATE.key]) {
                this.cfg.setProperty(DEF_CFG.PAGEDATE.key, today);
            }
            this.today = today;
            this.cfg.setProperty(DEF_CFG.TODAY.key, today, true);
        },

        /**
        * The default handler for the "selected" property
        * @method configSelected
        */
        configSelected : function(type, args, obj) {
            var selected = args[0],
                cfgSelected = DEF_CFG.SELECTED.key;

            if (selected) {
                if (Lang.isString(selected)) {
                    this.cfg.setProperty(cfgSelected, this._parseDates(selected), true);
                }
            }
            if (! this._selectedDates) {
                this._selectedDates = this.cfg.getProperty(cfgSelected);
            }
        },

        /**
        * The default handler for all configuration options properties
        * @method configOptions
        */
        configOptions : function(type, args, obj) {
            this.Options[type.toUpperCase()] = args[0];
        },

        /**
        * The default handler for all configuration locale properties
        * @method configLocale
        */
        configLocale : function(type, args, obj) {
            this.Locale[type.toUpperCase()] = args[0];

            this.cfg.refireEvent(DEF_CFG.LOCALE_MONTHS.key);
            this.cfg.refireEvent(DEF_CFG.LOCALE_WEEKDAYS.key);
        },

        /**
        * The default handler for all configuration locale field length properties
        * @method configLocaleValues
        */
        configLocaleValues : function(type, args, obj) {

            type = type.toLowerCase();

            var val = args[0],
                cfg = this.cfg,
                Locale = this.Locale;

            switch (type) {
                case DEF_CFG.LOCALE_MONTHS.key:
                    switch (val) {
                        case Calendar.SHORT:
                            Locale.LOCALE_MONTHS = cfg.getProperty(DEF_CFG.MONTHS_SHORT.key).concat();
                            break;
                        case Calendar.LONG:
                            Locale.LOCALE_MONTHS = cfg.getProperty(DEF_CFG.MONTHS_LONG.key).concat();
                            break;
                    }
                    break;
                case DEF_CFG.LOCALE_WEEKDAYS.key:
                    switch (val) {
                        case Calendar.ONE_CHAR:
                            Locale.LOCALE_WEEKDAYS = cfg.getProperty(DEF_CFG.WEEKDAYS_1CHAR.key).concat();
                            break;
                        case Calendar.SHORT:
                            Locale.LOCALE_WEEKDAYS = cfg.getProperty(DEF_CFG.WEEKDAYS_SHORT.key).concat();
                            break;
                        case Calendar.MEDIUM:
                            Locale.LOCALE_WEEKDAYS = cfg.getProperty(DEF_CFG.WEEKDAYS_MEDIUM.key).concat();
                            break;
                        case Calendar.LONG:
                            Locale.LOCALE_WEEKDAYS = cfg.getProperty(DEF_CFG.WEEKDAYS_LONG.key).concat();
                            break;
                    }

                    var START_WEEKDAY = cfg.getProperty(DEF_CFG.START_WEEKDAY.key);

                    if (START_WEEKDAY > 0) {
                        for (var w=0; w < START_WEEKDAY; ++w) {
                            Locale.LOCALE_WEEKDAYS.push(Locale.LOCALE_WEEKDAYS.shift());
                        }
                    }
                    break;
            }
        },

        /**
         * The default handler for the "navigator" property
         * @method configNavigator
         */
        configNavigator : function(type, args, obj) {
            var val = args[0];
            if (YAHOO.widget.CalendarNavigator && (val === true || Lang.isObject(val))) {
                if (!this.oNavigator) {
                    this.oNavigator = new YAHOO.widget.CalendarNavigator(this);
                    // Cleanup DOM Refs/Events before innerHTML is removed.
                    this.beforeRenderEvent.subscribe(function () {
                        if (!this.pages) {
                            this.oNavigator.erase();
                        }
                    }, this, true);
                }
            } else {
                if (this.oNavigator) {
                    this.oNavigator.destroy();
                    this.oNavigator = null;
                }
            }
        },

        /**
        * Defines the style constants for the Calendar
        * @method initStyles
        */
        initStyles : function() {

            var defStyle = Calendar.STYLES;

            this.Style = {
                /**
                * @property Style.CSS_ROW_HEADER
                */
                CSS_ROW_HEADER: defStyle.CSS_ROW_HEADER,
                /**
                * @property Style.CSS_ROW_FOOTER
                */
                CSS_ROW_FOOTER: defStyle.CSS_ROW_FOOTER,
                /**
                * @property Style.CSS_CELL
                */
                CSS_CELL : defStyle.CSS_CELL,
                /**
                * @property Style.CSS_CELL_SELECTOR
                */
                CSS_CELL_SELECTOR : defStyle.CSS_CELL_SELECTOR,
                /**
                * @property Style.CSS_CELL_SELECTED
                */
                CSS_CELL_SELECTED : defStyle.CSS_CELL_SELECTED,
                /**
                * @property Style.CSS_CELL_SELECTABLE
                */
                CSS_CELL_SELECTABLE : defStyle.CSS_CELL_SELECTABLE,
                /**
                * @property Style.CSS_CELL_RESTRICTED
                */
                CSS_CELL_RESTRICTED : defStyle.CSS_CELL_RESTRICTED,
                /**
                * @property Style.CSS_CELL_TODAY
                */
                CSS_CELL_TODAY : defStyle.CSS_CELL_TODAY,
                /**
                * @property Style.CSS_CELL_OOM
                */
                CSS_CELL_OOM : defStyle.CSS_CELL_OOM,
                /**
                * @property Style.CSS_CELL_OOB
                */
                CSS_CELL_OOB : defStyle.CSS_CELL_OOB,
                /**
                * @property Style.CSS_HEADER
                */
                CSS_HEADER : defStyle.CSS_HEADER,
                /**
                * @property Style.CSS_HEADER_TEXT
                */
                CSS_HEADER_TEXT : defStyle.CSS_HEADER_TEXT,
                /**
                * @property Style.CSS_BODY
                */
                CSS_BODY : defStyle.CSS_BODY,
                /**
                * @property Style.CSS_WEEKDAY_CELL
                */
                CSS_WEEKDAY_CELL : defStyle.CSS_WEEKDAY_CELL,
                /**
                * @property Style.CSS_WEEKDAY_ROW
                */
                CSS_WEEKDAY_ROW : defStyle.CSS_WEEKDAY_ROW,
                /**
                * @property Style.CSS_FOOTER
                */
                CSS_FOOTER : defStyle.CSS_FOOTER,
                /**
                * @property Style.CSS_CALENDAR
                */
                CSS_CALENDAR : defStyle.CSS_CALENDAR,
                /**
                * @property Style.CSS_SINGLE
                */
                CSS_SINGLE : defStyle.CSS_SINGLE,
                /**
                * @property Style.CSS_CONTAINER
                */
                CSS_CONTAINER : defStyle.CSS_CONTAINER,
                /**
                * @property Style.CSS_NAV_LEFT
                */
                CSS_NAV_LEFT : defStyle.CSS_NAV_LEFT,
                /**
                * @property Style.CSS_NAV_RIGHT
                */
                CSS_NAV_RIGHT : defStyle.CSS_NAV_RIGHT,
                /**
                * @property Style.CSS_NAV
                */
                CSS_NAV : defStyle.CSS_NAV,
                /**
                * @property Style.CSS_CLOSE
                */
                CSS_CLOSE : defStyle.CSS_CLOSE,
                /**
                * @property Style.CSS_CELL_TOP
                */
                CSS_CELL_TOP : defStyle.CSS_CELL_TOP,
                /**
                * @property Style.CSS_CELL_LEFT
                */
                CSS_CELL_LEFT : defStyle.CSS_CELL_LEFT,
                /**
                * @property Style.CSS_CELL_RIGHT
                */
                CSS_CELL_RIGHT : defStyle.CSS_CELL_RIGHT,
                /**
                * @property Style.CSS_CELL_BOTTOM
                */
                CSS_CELL_BOTTOM : defStyle.CSS_CELL_BOTTOM,
                /**
                * @property Style.CSS_CELL_HOVER
                */
                CSS_CELL_HOVER : defStyle.CSS_CELL_HOVER,
                /**
                * @property Style.CSS_CELL_HIGHLIGHT1
                */
                CSS_CELL_HIGHLIGHT1 : defStyle.CSS_CELL_HIGHLIGHT1,
                /**
                * @property Style.CSS_CELL_HIGHLIGHT2
                */
                CSS_CELL_HIGHLIGHT2 : defStyle.CSS_CELL_HIGHLIGHT2,
                /**
                * @property Style.CSS_CELL_HIGHLIGHT3
                */
                CSS_CELL_HIGHLIGHT3 : defStyle.CSS_CELL_HIGHLIGHT3,
                /**
                * @property Style.CSS_CELL_HIGHLIGHT4
                */
                CSS_CELL_HIGHLIGHT4 : defStyle.CSS_CELL_HIGHLIGHT4,
                /**
                 * @property Style.CSS_WITH_TITLE
                 */
                CSS_WITH_TITLE : defStyle.CSS_WITH_TITLE,
                 /**
                 * @property Style.CSS_FIXED_SIZE
                 */
                CSS_FIXED_SIZE : defStyle.CSS_FIXED_SIZE,
                 /**
                 * @property Style.CSS_LINK_CLOSE
                 */
                CSS_LINK_CLOSE : defStyle.CSS_LINK_CLOSE
            };
        },

        /**
        * Builds the date label that will be displayed in the calendar header or
        * footer, depending on configuration.
        * @method buildMonthLabel
        * @return {String} The formatted calendar month label
        */
        buildMonthLabel : function() {
            return this._buildMonthLabel(this.cfg.getProperty(DEF_CFG.PAGEDATE.key));
        },

        /**
         * Helper method, to format a Month Year string, given a JavaScript Date, based on the
         * Calendar localization settings
         *
         * @method _buildMonthLabel
         * @private
         * @param {Date} date
         * @return {String} Formated month, year string
         */
        _buildMonthLabel : function(date) {
            var monthLabel  = this.Locale.LOCALE_MONTHS[date.getMonth()] + this.Locale.MY_LABEL_MONTH_SUFFIX,
                yearLabel = (date.getFullYear() + this.Locale.YEAR_OFFSET) + this.Locale.MY_LABEL_YEAR_SUFFIX;

            if (this.Locale.MY_LABEL_MONTH_POSITION == 2 || this.Locale.MY_LABEL_YEAR_POSITION == 1) {
                return yearLabel + monthLabel;
            } else {
                return monthLabel + yearLabel;
            }
        },

        /**
        * Builds the date digit that will be displayed in calendar cells
        * @method buildDayLabel
        * @param {Date} workingDate The current working date
        * @return {String} The formatted day label
        */
        buildDayLabel : function(workingDate) {
            return workingDate.getDate();
        },

        /**
         * Creates the title bar element and adds it to Calendar container DIV
         *
         * @method createTitleBar
         * @param {String} strTitle The title to display in the title bar
         * @return The title bar element
         */
        createTitleBar : function(strTitle) {
            var tDiv = Dom.getElementsByClassName(YAHOO.widget.CalendarGroup.CSS_2UPTITLE, "div", this.oDomContainer)[0] || document.createElement("div");
            tDiv.className = YAHOO.widget.CalendarGroup.CSS_2UPTITLE;
            tDiv.innerHTML = strTitle;
            this.oDomContainer.insertBefore(tDiv, this.oDomContainer.firstChild);

            Dom.addClass(this.oDomContainer, this.Style.CSS_WITH_TITLE);

            return tDiv;
        },

        /**
         * Removes the title bar element from the DOM
         *
         * @method removeTitleBar
         */
        removeTitleBar : function() {
            var tDiv = Dom.getElementsByClassName(YAHOO.widget.CalendarGroup.CSS_2UPTITLE, "div", this.oDomContainer)[0] || null;
            if (tDiv) {
                Event.purgeElement(tDiv);
                this.oDomContainer.removeChild(tDiv);
            }
            Dom.removeClass(this.oDomContainer, this.Style.CSS_WITH_TITLE);
        },

        /**
         * Creates the close button HTML element and adds it to Calendar container DIV
         *
         * @method createCloseButton
         * @return The close HTML element created
         */
        createCloseButton : function() {
            var cssClose = YAHOO.widget.CalendarGroup.CSS_2UPCLOSE,
                cssLinkClose = this.Style.CSS_LINK_CLOSE,
                DEPR_CLOSE_PATH = "us/my/bn/x_d.gif",

                lnk = Dom.getElementsByClassName(cssLinkClose, "a", this.oDomContainer)[0],
                strings = this.cfg.getProperty(DEF_CFG.STRINGS.key),
                closeStr = (strings && strings.close) ? strings.close : "";

            if (!lnk) {
                lnk = document.createElement("a");
                Event.addListener(lnk, "click", function(e, cal) {
                    cal.hide();
                    Event.preventDefault(e);
                }, this);
            }

            lnk.href = "#";
            lnk.className = cssLinkClose;

            if (Calendar.IMG_ROOT !== null) {
                var img = Dom.getElementsByClassName(cssClose, "img", lnk)[0] || document.createElement("img");
                img.src = Calendar.IMG_ROOT + DEPR_CLOSE_PATH;
                img.className = cssClose;
                lnk.appendChild(img);
            } else {
                lnk.innerHTML = '<span class="' + cssClose + ' ' + this.Style.CSS_CLOSE + '">' + closeStr + '</span>';
            }
            this.oDomContainer.appendChild(lnk);

            return lnk;
        },

        /**
         * Removes the close button HTML element from the DOM
         *
         * @method removeCloseButton
         */
        removeCloseButton : function() {
            var btn = Dom.getElementsByClassName(this.Style.CSS_LINK_CLOSE, "a", this.oDomContainer)[0] || null;
            if (btn) {
                Event.purgeElement(btn);
                this.oDomContainer.removeChild(btn);
            }
        },

        /**
        * Renders the calendar header.
        * @method renderHeader
        * @param {Array} html The current working HTML array
        * @return {Array} The current working HTML array
        */
        renderHeader : function(html) {

            this.logger.log("Rendering header", "render");

            var colSpan = 7,
                DEPR_NAV_LEFT = "us/tr/callt.gif",
                DEPR_NAV_RIGHT = "us/tr/calrt.gif",
                cfg = this.cfg,
                pageDate = cfg.getProperty(DEF_CFG.PAGEDATE.key),
                strings= cfg.getProperty(DEF_CFG.STRINGS.key),
                prevStr = (strings && strings.previousMonth) ?  strings.previousMonth : "",
                nextStr = (strings && strings.nextMonth) ? strings.nextMonth : "",
                monthLabel;

            if (cfg.getProperty(DEF_CFG.SHOW_WEEK_HEADER.key)) {
                colSpan += 1;
            }

            if (cfg.getProperty(DEF_CFG.SHOW_WEEK_FOOTER.key)) {
                colSpan += 1;
            }

            html[html.length] = "<thead>";
            html[html.length] =  "<tr>";
            html[html.length] =   '<th colspan="' + colSpan + '" class="' + this.Style.CSS_HEADER_TEXT + '">';
            html[html.length] =    '<div class="' + this.Style.CSS_HEADER + '">';

            var renderLeft, renderRight = false;

            if (this.parent) {
                if (this.index === 0) {
                    renderLeft = true;
                }
                if (this.index == (this.parent.cfg.getProperty("pages") -1)) {
                    renderRight = true;
                }
            } else {
                renderLeft = true;
                renderRight = true;
            }

            if (renderLeft) {
                monthLabel  = this._buildMonthLabel(DateMath.subtract(pageDate, DateMath.MONTH, 1));

                var leftArrow = cfg.getProperty(DEF_CFG.NAV_ARROW_LEFT.key);
                // Check for deprecated customization - If someone set IMG_ROOT, but didn't set NAV_ARROW_LEFT, then set NAV_ARROW_LEFT to the old deprecated value
                if (leftArrow === null && Calendar.IMG_ROOT !== null) {
                    leftArrow = Calendar.IMG_ROOT + DEPR_NAV_LEFT;
                }
                var leftStyle = (leftArrow === null) ? "" : ' style="background-image:url(' + leftArrow + ')"';
                html[html.length] = '<a class="' + this.Style.CSS_NAV_LEFT + '"' + leftStyle + ' href="#">' + prevStr + ' (' + monthLabel + ')' + '</a>';
            }

            var lbl = this.buildMonthLabel();
            var cal = this.parent || this;
            if (cal.cfg.getProperty("navigator")) {
                lbl = "<a class=\"" + this.Style.CSS_NAV + "\" href=\"#\">" + lbl + "</a>";
            }
            html[html.length] = lbl;

            if (renderRight) {
                monthLabel  = this._buildMonthLabel(DateMath.add(pageDate, DateMath.MONTH, 1));

                var rightArrow = cfg.getProperty(DEF_CFG.NAV_ARROW_RIGHT.key);
                if (rightArrow === null && Calendar.IMG_ROOT !== null) {
                    rightArrow = Calendar.IMG_ROOT + DEPR_NAV_RIGHT;
                }
                var rightStyle = (rightArrow === null) ? "" : ' style="background-image:url(' + rightArrow + ')"';
                html[html.length] = '<a class="' + this.Style.CSS_NAV_RIGHT + '"' + rightStyle + ' href="#">' + nextStr + ' (' + monthLabel + ')' + '</a>';
            }

            html[html.length] = '</div>\n</th>\n</tr>';

            if (cfg.getProperty(DEF_CFG.SHOW_WEEKDAYS.key)) {
                html = this.buildWeekdays(html);
            }

            html[html.length] = '</thead>';

            return html;
        },

        /**
        * Renders the Calendar's weekday headers.
        * @method buildWeekdays
        * @param {Array} html The current working HTML array
        * @return {Array} The current working HTML array
        */
        buildWeekdays : function(html) {

            html[html.length] = '<tr class="' + this.Style.CSS_WEEKDAY_ROW + '">';

            if (this.cfg.getProperty(DEF_CFG.SHOW_WEEK_HEADER.key)) {
                html[html.length] = '<th>&#160;</th>';
            }

            for(var i=0;i < this.Locale.LOCALE_WEEKDAYS.length; ++i) {
                html[html.length] = '<th class="' + this.Style.CSS_WEEKDAY_CELL + '">' + this.Locale.LOCALE_WEEKDAYS[i] + '</th>';
            }

            if (this.cfg.getProperty(DEF_CFG.SHOW_WEEK_FOOTER.key)) {
                html[html.length] = '<th>&#160;</th>';
            }

            html[html.length] = '</tr>';

            return html;
        },

        /**
        * Renders the calendar body.
        * @method renderBody
        * @param {Date} workingDate The current working Date being used for the render process
        * @param {Array} html The current working HTML array
        * @return {Array} The current working HTML array
        */
        renderBody : function(workingDate, html) {
            this.logger.log("Rendering body", "render");

            var startDay = this.cfg.getProperty(DEF_CFG.START_WEEKDAY.key);

            this.preMonthDays = workingDate.getDay();
            if (startDay > 0) {
                this.preMonthDays -= startDay;
            }
            if (this.preMonthDays < 0) {
                this.preMonthDays += 7;
            }

            this.monthDays = DateMath.findMonthEnd(workingDate).getDate();
            this.postMonthDays = Calendar.DISPLAY_DAYS-this.preMonthDays-this.monthDays;

            this.logger.log(this.preMonthDays + " preciding out-of-month days", "render");
            this.logger.log(this.monthDays + " month days", "render");
            this.logger.log(this.postMonthDays + " post-month days", "render");

            workingDate = DateMath.subtract(workingDate, DateMath.DAY, this.preMonthDays);
            this.logger.log("Calendar page starts on " + workingDate, "render");

            var weekNum,
                weekClass,
                weekPrefix = "w",
                cellPrefix = "_cell",
                workingDayPrefix = "wd",
                dayPrefix = "d",
                cellRenderers,
                renderer,
                t = this.today,
                cfg = this.cfg,
                todayYear = t.getFullYear(),
                todayMonth = t.getMonth(),
                todayDate = t.getDate(),
                useDate = cfg.getProperty(DEF_CFG.PAGEDATE.key),
                hideBlankWeeks = cfg.getProperty(DEF_CFG.HIDE_BLANK_WEEKS.key),
                showWeekFooter = cfg.getProperty(DEF_CFG.SHOW_WEEK_FOOTER.key),
                showWeekHeader = cfg.getProperty(DEF_CFG.SHOW_WEEK_HEADER.key),
                mindate = cfg.getProperty(DEF_CFG.MINDATE.key),
                maxdate = cfg.getProperty(DEF_CFG.MAXDATE.key),
                yearOffset = this.Locale.YEAR_OFFSET;

            if (mindate) {
                mindate = DateMath.clearTime(mindate);
            }
            if (maxdate) {
                maxdate = DateMath.clearTime(maxdate);
            }

            html[html.length] = '<tbody class="m' + (useDate.getMonth()+1) + ' ' + this.Style.CSS_BODY + '">';

            var i = 0,
                tempDiv = document.createElement("div"),
                cell = document.createElement("td");

            tempDiv.appendChild(cell);

            var cal = this.parent || this;

            for (var r=0;r<6;r++) {
                weekNum = DateMath.getWeekNumber(workingDate, startDay);
                weekClass = weekPrefix + weekNum;

                // Local OOM check for performance, since we already have pagedate
                if (r !== 0 && hideBlankWeeks === true && workingDate.getMonth() != useDate.getMonth()) {
                    break;
                } else {
                    html[html.length] = '<tr class="' + weekClass + '">';

                    if (showWeekHeader) { html = this.renderRowHeader(weekNum, html); }

                    for (var d=0; d < 7; d++){ // Render actual days

                        cellRenderers = [];

                        this.clearElement(cell);
                        cell.className = this.Style.CSS_CELL;
                        cell.id = this.id + cellPrefix + i;
                        this.logger.log("Rendering cell " + cell.id + " (" + workingDate.getFullYear() + yearOffset + "-" + (workingDate.getMonth()+1) + "-" + workingDate.getDate() + ")", "cellrender");

                        if (workingDate.getDate()  == todayDate &&
                            workingDate.getMonth()  == todayMonth &&
                            workingDate.getFullYear() == todayYear) {
                            cellRenderers[cellRenderers.length]=cal.renderCellStyleToday;
                        }

                        var workingArray = [workingDate.getFullYear(),workingDate.getMonth()+1,workingDate.getDate()];
                        this.cellDates[this.cellDates.length] = workingArray; // Add this date to cellDates

                        // Local OOM check for performance, since we already have pagedate
                        if (workingDate.getMonth() != useDate.getMonth()) {
                            cellRenderers[cellRenderers.length]=cal.renderCellNotThisMonth;
                        } else {
                            Dom.addClass(cell, workingDayPrefix + workingDate.getDay());
                            Dom.addClass(cell, dayPrefix + workingDate.getDate());

                            for (var s=0;s<this.renderStack.length;++s) {

                                renderer = null;

                                var rArray = this.renderStack[s],
                                    type = rArray[0],
                                    month,
                                    day,
                                    year;

                                switch (type) {
                                    case Calendar.DATE:
                                        month = rArray[1][1];
                                        day = rArray[1][2];
                                        year = rArray[1][0];

                                        if (workingDate.getMonth()+1 == month && workingDate.getDate() == day && workingDate.getFullYear() == year) {
                                            renderer = rArray[2];
                                            this.renderStack.splice(s,1);
                                        }
                                        break;
                                    case Calendar.MONTH_DAY:
                                        month = rArray[1][0];
                                        day = rArray[1][1];

                                        if (workingDate.getMonth()+1 == month && workingDate.getDate() == day) {
                                            renderer = rArray[2];
                                            this.renderStack.splice(s,1);
                                        }
                                        break;
                                    case Calendar.RANGE:
                                        var date1 = rArray[1][0],
                                            date2 = rArray[1][1],
                                            d1month = date1[1],
                                            d1day = date1[2],
                                            d1year = date1[0],
                                            d1 = DateMath.getDate(d1year, d1month-1, d1day),
                                            d2month = date2[1],
                                            d2day = date2[2],
                                            d2year = date2[0],
                                            d2 = DateMath.getDate(d2year, d2month-1, d2day);

                                        if (workingDate.getTime() >= d1.getTime() && workingDate.getTime() <= d2.getTime()) {
                                            renderer = rArray[2];

                                            if (workingDate.getTime()==d2.getTime()) {
                                                this.renderStack.splice(s,1);
                                            }
                                        }
                                        break;
                                    case Calendar.WEEKDAY:
                                        var weekday = rArray[1][0];
                                        if (workingDate.getDay()+1 == weekday) {
                                            renderer = rArray[2];
                                        }
                                        break;
                                    case Calendar.MONTH:
                                        month = rArray[1][0];
                                        if (workingDate.getMonth()+1 == month) {
                                            renderer = rArray[2];
                                        }
                                        break;
                                }

                                if (renderer) {
                                    cellRenderers[cellRenderers.length]=renderer;
                                }
                            }

                        }

                        if (this._indexOfSelectedFieldArray(workingArray) > -1) {
                            cellRenderers[cellRenderers.length]=cal.renderCellStyleSelected;
                        }

                        if ((mindate && (workingDate.getTime() < mindate.getTime())) ||
                            (maxdate && (workingDate.getTime() > maxdate.getTime()))
                        ) {
                            cellRenderers[cellRenderers.length]=cal.renderOutOfBoundsDate;
                        } else {
                            cellRenderers[cellRenderers.length]=cal.styleCellDefault;
                            cellRenderers[cellRenderers.length]=cal.renderCellDefault;
                        }

                        for (var x=0; x < cellRenderers.length; ++x) {
                            this.logger.log("renderer[" + x + "] for (" + workingDate.getFullYear() + yearOffset + "-" + (workingDate.getMonth()+1) + "-" + workingDate.getDate() + ")", "cellrender");
                            if (cellRenderers[x].call(cal, workingDate, cell) == Calendar.STOP_RENDER) {
                                break;
                            }
                        }

                        workingDate.setTime(workingDate.getTime() + DateMath.ONE_DAY_MS);
                        // Just in case we crossed DST/Summertime boundaries
                        workingDate = DateMath.clearTime(workingDate);

                        if (i >= 0 && i <= 6) {
                            Dom.addClass(cell, this.Style.CSS_CELL_TOP);
                        }
                        if ((i % 7) === 0) {
                            Dom.addClass(cell, this.Style.CSS_CELL_LEFT);
                        }
                        if (((i+1) % 7) === 0) {
                            Dom.addClass(cell, this.Style.CSS_CELL_RIGHT);
                        }

                        var postDays = this.postMonthDays;
                        if (hideBlankWeeks && postDays >= 7) {
                            var blankWeeks = Math.floor(postDays/7);
                            for (var p=0;p<blankWeeks;++p) {
                                postDays -= 7;
                            }
                        }

                        if (i >= ((this.preMonthDays+postDays+this.monthDays)-7)) {
                            Dom.addClass(cell, this.Style.CSS_CELL_BOTTOM);
                        }

                        html[html.length] = tempDiv.innerHTML;
                        i++;
                    }

                    if (showWeekFooter) { html = this.renderRowFooter(weekNum, html); }

                    html[html.length] = '</tr>';
                }
            }

            html[html.length] = '</tbody>';

            return html;
        },

        /**
        * Renders the calendar footer. In the default implementation, there is
        * no footer.
        * @method renderFooter
        * @param {Array} html The current working HTML array
        * @return {Array} The current working HTML array
        */
        renderFooter : function(html) { return html; },

        /**
        * Renders the calendar after it has been configured. The render() method has a specific call chain that will execute
        * when the method is called: renderHeader, renderBody, renderFooter.
        * Refer to the documentation for those methods for information on
        * individual render tasks.
        * @method render
        */
        render : function() {
            this.beforeRenderEvent.fire();

            // Find starting day of the current month
            var workingDate = DateMath.findMonthStart(this.cfg.getProperty(DEF_CFG.PAGEDATE.key));

            this.resetRenderers();
            this.cellDates.length = 0;

            Event.purgeElement(this.oDomContainer, true);

            var html = [];

            html[html.length] = '<table cellSpacing="0" class="' + this.Style.CSS_CALENDAR + ' y' + (workingDate.getFullYear() + this.Locale.YEAR_OFFSET) +'" id="' + this.id + '">';
            html = this.renderHeader(html);
            html = this.renderBody(workingDate, html);
            html = this.renderFooter(html);
            html[html.length] = '</table>';

            this.oDomContainer.innerHTML = html.join("\n");

            this.applyListeners();
            this.cells = Dom.getElementsByClassName(this.Style.CSS_CELL, "td", this.id);

            this.cfg.refireEvent(DEF_CFG.TITLE.key);
            this.cfg.refireEvent(DEF_CFG.CLOSE.key);
            this.cfg.refireEvent(DEF_CFG.IFRAME.key);

            this.renderEvent.fire();
        },

        /**
        * Applies the Calendar's DOM listeners to applicable elements.
        * @method applyListeners
        */
        applyListeners : function() {
            var root = this.oDomContainer,
                cal = this.parent || this,
                anchor = "a",
                click = "click";

            var linkLeft = Dom.getElementsByClassName(this.Style.CSS_NAV_LEFT, anchor, root),
                linkRight = Dom.getElementsByClassName(this.Style.CSS_NAV_RIGHT, anchor, root);

            if (linkLeft && linkLeft.length > 0) {
                this.linkLeft = linkLeft[0];
                Event.addListener(this.linkLeft, click, this.doPreviousMonthNav, cal, true);
            }

            if (linkRight && linkRight.length > 0) {
                this.linkRight = linkRight[0];
                Event.addListener(this.linkRight, click, this.doNextMonthNav, cal, true);
            }

            if (cal.cfg.getProperty("navigator") !== null) {
                this.applyNavListeners();
            }

            if (this.domEventMap) {
                var el,elements;
                for (var cls in this.domEventMap) {
                    if (Lang.hasOwnProperty(this.domEventMap, cls)) {
                        var items = this.domEventMap[cls];

                        if (! (items instanceof Array)) {
                            items = [items];
                        }

                        for (var i=0;i<items.length;i++) {
                            var item = items[i];
                            elements = Dom.getElementsByClassName(cls, item.tag, this.oDomContainer);

                            for (var c=0;c<elements.length;c++) {
                                el = elements[c];
                                 Event.addListener(el, item.event, item.handler, item.scope, item.correct );
                            }
                        }
                    }
                }
            }

            Event.addListener(this.oDomContainer, "click", this.doSelectCell, this);
            Event.addListener(this.oDomContainer, "mouseover", this.doCellMouseOver, this);
            Event.addListener(this.oDomContainer, "mouseout", this.doCellMouseOut, this);
        },

        applyNavListeners : function() {
            var calParent = this.parent || this,
                cal = this,
                navBtns = Dom.getElementsByClassName(this.Style.CSS_NAV, "a", this.oDomContainer);

            if (navBtns.length > 0) {

                Event.addListener(navBtns, "click", function (e, obj) {
                    var target = Event.getTarget(e);
                    // this == navBtn
                    if (this === target || Dom.isAncestor(this, target)) {
                        Event.preventDefault(e);
                    }
                    var navigator = calParent.oNavigator;
                    if (navigator) {
                        var pgdate = cal.cfg.getProperty("pagedate");
                        navigator.setYear(pgdate.getFullYear() + cal.Locale.YEAR_OFFSET);
                        navigator.setMonth(pgdate.getMonth());
                        navigator.show();
                    }
                });
            }
        },

        /**
        * Retrieves the Date object for the specified Calendar cell
        * @method getDateByCellId
        * @param {String} id The id of the cell
        * @return {Date} The Date object for the specified Calendar cell
        */
        getDateByCellId : function(id) {
            var date = this.getDateFieldsByCellId(id);
            return (date) ? DateMath.getDate(date[0],date[1]-1,date[2]) : null;
        },

        /**
        * Retrieves the Date object for the specified Calendar cell
        * @method getDateFieldsByCellId
        * @param {String} id The id of the cell
        * @return {Array} The array of Date fields for the specified Calendar cell
        */
        getDateFieldsByCellId : function(id) {
            id = this.getIndexFromId(id);
            return (id > -1) ? this.cellDates[id] : null;
        },

        /**
         * Find the Calendar's cell index for a given date.
         * If the date is not found, the method returns -1.
         * <p>
         * The returned index can be used to lookup the cell HTMLElement
         * using the Calendar's cells array or passed to selectCell to select
         * cells by index.
         * </p>
         *
         * See <a href="#cells">cells</a>, <a href="#selectCell">selectCell</a>.
         *
         * @method getCellIndex
         * @param {Date} date JavaScript Date object, for which to find a cell index.
         * @return {Number} The index of the date in Calendars cellDates/cells arrays, or -1 if the date
         * is not on the curently rendered Calendar page.
         */
        getCellIndex : function(date) {
            var idx = -1;
            if (date) {
                var m = date.getMonth(),
                    y = date.getFullYear(),
                    d = date.getDate(),
                    dates = this.cellDates;

                for (var i = 0; i < dates.length; ++i) {
                    var cellDate = dates[i];
                    if (cellDate[0] === y && cellDate[1] === m+1 && cellDate[2] === d) {
                        idx = i;
                        break;
                    }
                }
            }
            return idx;
        },

        /**
         * Given the id used to mark each Calendar cell, this method
         * extracts the index number from the id.
         *
         * @param {String} strId The cell id
         * @return {Number} The index of the cell, or -1 if id does not contain an index number
         */
        getIndexFromId : function(strId) {
            var idx = -1,
                li = strId.lastIndexOf("_cell");

            if (li > -1) {
                idx = parseInt(strId.substring(li + 5), 10);
            }

            return idx;
        },

        // BEGIN BUILT-IN TABLE CELL RENDERERS

        /**
        * Renders a cell that falls before the minimum date or after the maximum date.
        * widget class.
        * @method renderOutOfBoundsDate
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        * @return {String} YAHOO.widget.Calendar.STOP_RENDER if rendering should stop with this style, null or nothing if rendering
        *   should not be terminated
        */
        renderOutOfBoundsDate : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_OOB);
            cell.innerHTML = workingDate.getDate();
            return Calendar.STOP_RENDER;
        },

        /**
        * Renders the row header for a week.
        * @method renderRowHeader
        * @param {Number} weekNum The week number of the current row
        * @param {Array} cell The current working HTML array
        */
        renderRowHeader : function(weekNum, html) {
            html[html.length] = '<th class="' + this.Style.CSS_ROW_HEADER + '">' + weekNum + '</th>';
            return html;
        },

        /**
        * Renders the row footer for a week.
        * @method renderRowFooter
        * @param {Number} weekNum The week number of the current row
        * @param {Array} cell The current working HTML array
        */
        renderRowFooter : function(weekNum, html) {
            html[html.length] = '<th class="' + this.Style.CSS_ROW_FOOTER + '">' + weekNum + '</th>';
            return html;
        },

        /**
        * Renders a single standard calendar cell in the calendar widget table.
        * All logic for determining how a standard default cell will be rendered is
        * encapsulated in this method, and must be accounted for when extending the
        * widget class.
        * @method renderCellDefault
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellDefault : function(workingDate, cell) {
            cell.innerHTML = '<a href="#" class="' + this.Style.CSS_CELL_SELECTOR + '">' + this.buildDayLabel(workingDate) + "</a>";
        },

        /**
        * Styles a selectable cell.
        * @method styleCellDefault
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        styleCellDefault : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_SELECTABLE);
        },

        /**
        * Renders a single standard calendar cell using the CSS hightlight1 style
        * @method renderCellStyleHighlight1
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellStyleHighlight1 : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT1);
        },

        /**
        * Renders a single standard calendar cell using the CSS hightlight2 style
        * @method renderCellStyleHighlight2
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellStyleHighlight2 : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT2);
        },

        /**
        * Renders a single standard calendar cell using the CSS hightlight3 style
        * @method renderCellStyleHighlight3
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellStyleHighlight3 : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT3);
        },

        /**
        * Renders a single standard calendar cell using the CSS hightlight4 style
        * @method renderCellStyleHighlight4
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellStyleHighlight4 : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT4);
        },

        /**
        * Applies the default style used for rendering today's date to the current calendar cell
        * @method renderCellStyleToday
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        */
        renderCellStyleToday : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_TODAY);
        },

        /**
        * Applies the default style used for rendering selected dates to the current calendar cell
        * @method renderCellStyleSelected
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        * @return {String} YAHOO.widget.Calendar.STOP_RENDER if rendering should stop with this style, null or nothing if rendering
        *   should not be terminated
        */
        renderCellStyleSelected : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_SELECTED);
        },

        /**
        * Applies the default style used for rendering dates that are not a part of the current
        * month (preceding or trailing the cells for the current month)
        * @method renderCellNotThisMonth
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        * @return {String} YAHOO.widget.Calendar.STOP_RENDER if rendering should stop with this style, null or nothing if rendering
        *   should not be terminated
        */
        renderCellNotThisMonth : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL_OOM);
            cell.innerHTML=workingDate.getDate();
            return Calendar.STOP_RENDER;
        },

        /**
        * Renders the current calendar cell as a non-selectable "black-out" date using the default
        * restricted style.
        * @method renderBodyCellRestricted
        * @param {Date}     workingDate  The current working Date object being used to generate the calendar
        * @param {HTMLTableCellElement} cell   The current working cell in the calendar
        * @return {String} YAHOO.widget.Calendar.STOP_RENDER if rendering should stop with this style, null or nothing if rendering
        *   should not be terminated
        */
        renderBodyCellRestricted : function(workingDate, cell) {
            Dom.addClass(cell, this.Style.CSS_CELL);
            Dom.addClass(cell, this.Style.CSS_CELL_RESTRICTED);
            cell.innerHTML=workingDate.getDate();
            return Calendar.STOP_RENDER;
        },

        // END BUILT-IN TABLE CELL RENDERERS

        // BEGIN MONTH NAVIGATION METHODS

        /**
        * Adds the designated number of months to the current calendar month, and sets the current
        * calendar page date to the new month.
        * @method addMonths
        * @param {Number} count The number of months to add to the current calendar
        */
        addMonths : function(count) {
            var cfgPageDate = DEF_CFG.PAGEDATE.key,

            prevDate = this.cfg.getProperty(cfgPageDate),
            newDate = DateMath.add(prevDate, DateMath.MONTH, count);

            this.cfg.setProperty(cfgPageDate, newDate);
            this.resetRenderers();
            this.changePageEvent.fire(prevDate, newDate);
        },

        /**
        * Subtracts the designated number of months from the current calendar month, and sets the current
        * calendar page date to the new month.
        * @method subtractMonths
        * @param {Number} count The number of months to subtract from the current calendar
        */
        subtractMonths : function(count) {
            this.addMonths(-1*count);
        },

        /**
        * Adds the designated number of years to the current calendar, and sets the current
        * calendar page date to the new month.
        * @method addYears
        * @param {Number} count The number of years to add to the current calendar
        */
        addYears : function(count) {
            var cfgPageDate = DEF_CFG.PAGEDATE.key,

            prevDate = this.cfg.getProperty(cfgPageDate),
            newDate = DateMath.add(prevDate, DateMath.YEAR, count);

            this.cfg.setProperty(cfgPageDate, newDate);
            this.resetRenderers();
            this.changePageEvent.fire(prevDate, newDate);
        },

        /**
        * Subtcats the designated number of years from the current calendar, and sets the current
        * calendar page date to the new month.
        * @method subtractYears
        * @param {Number} count The number of years to subtract from the current calendar
        */
        subtractYears : function(count) {
            this.addYears(-1*count);
        },

        /**
        * Navigates to the next month page in the calendar widget.
        * @method nextMonth
        */
        nextMonth : function() {
            this.addMonths(1);
        },

        /**
        * Navigates to the previous month page in the calendar widget.
        * @method previousMonth
        */
        previousMonth : function() {
            this.addMonths(-1);
        },

        /**
        * Navigates to the next year in the currently selected month in the calendar widget.
        * @method nextYear
        */
        nextYear : function() {
            this.addYears(1);
        },

        /**
        * Navigates to the previous year in the currently selected month in the calendar widget.
        * @method previousYear
        */
        previousYear : function() {
            this.addYears(-1);
        },

        // END MONTH NAVIGATION METHODS

        // BEGIN SELECTION METHODS

        /**
        * Resets the calendar widget to the originally selected month and year, and
        * sets the calendar to the initial selection(s).
        * @method reset
        */
        reset : function() {
            this.cfg.resetProperty(DEF_CFG.SELECTED.key);
            this.cfg.resetProperty(DEF_CFG.PAGEDATE.key);
            this.resetEvent.fire();
        },

        /**
        * Clears the selected dates in the current calendar widget and sets the calendar
        * to the current month and year.
        * @method clear
        */
        clear : function() {
            this.cfg.setProperty(DEF_CFG.SELECTED.key, []);
            this.cfg.setProperty(DEF_CFG.PAGEDATE.key, new Date(this.today.getTime()));
            this.clearEvent.fire();
        },

        /**
        * Selects a date or a collection of dates on the current calendar. This method, by default,
        * does not call the render method explicitly. Once selection has completed, render must be
        * called for the changes to be reflected visually.
        *
        * Any dates which are OOB (out of bounds, not selectable) will not be selected and the array of
        * selected dates passed to the selectEvent will not contain OOB dates.
        *
        * If all dates are OOB, the no state change will occur; beforeSelect and select events will not be fired.
        *
        * @method select
        * @param {String/Date/Date[]} date The date string of dates to select in the current calendar. Valid formats are
        *        individual date(s) (12/24/2005,12/26/2005) or date range(s) (12/24/2005-1/1/2006).
        *        Multiple comma-delimited dates can also be passed to this method (12/24/2005,12/11/2005-12/13/2005).
        *        This method can also take a JavaScript Date object or an array of Date objects.
        * @return {Date[]}   Array of JavaScript Date objects representing all individual dates that are currently selected.
        */
        select : function(date) {
            this.logger.log("Select: " + date, "info");

            var aToBeSelected = this._toFieldArray(date),
                validDates = [],
                selected = [],
                cfgSelected = DEF_CFG.SELECTED.key;

            this.logger.log("Selection field array: " + aToBeSelected, "info");

            for (var a=0; a < aToBeSelected.length; ++a) {
                var toSelect = aToBeSelected[a];

                if (!this.isDateOOB(this._toDate(toSelect))) {

                    if (validDates.length === 0) {
                        this.beforeSelectEvent.fire();
                        selected = this.cfg.getProperty(cfgSelected);
                    }
                    validDates.push(toSelect);

                    if (this._indexOfSelectedFieldArray(toSelect) == -1) {
                        selected[selected.length] = toSelect;
                    }
                }
            }

            if (validDates.length === 0) { this.logger.log("All provided dates were OOB. beforeSelect and select events not fired", "info"); }

            if (validDates.length > 0) {
                if (this.parent) {
                    this.parent.cfg.setProperty(cfgSelected, selected);
                } else {
                    this.cfg.setProperty(cfgSelected, selected);
                }
                this.selectEvent.fire(validDates);
            }

            return this.getSelectedDates();
        },

        /**
        * Selects a date on the current calendar by referencing the index of the cell that should be selected.
        * This method is used to easily select a single cell (usually with a mouse click) without having to do
        * a full render. The selected style is applied to the cell directly.
        *
        * If the cell is not marked with the CSS_CELL_SELECTABLE class (as is the case by default for out of month
        * or out of bounds cells), it will not be selected and in such a case beforeSelect and select events will not be fired.
        *
        * @method selectCell
        * @param {Number} cellIndex The index of the cell to select in the current calendar.
        * @return {Date[]} Array of JavaScript Date objects representing all individual dates that are currently selected.
        */
        selectCell : function(cellIndex) {

            var cell = this.cells[cellIndex],
                cellDate = this.cellDates[cellIndex],
                dCellDate = this._toDate(cellDate),
                selectable = Dom.hasClass(cell, this.Style.CSS_CELL_SELECTABLE);

            this.logger.log("Select: " + dCellDate, "info");
            if (!selectable) {this.logger.log("The cell at cellIndex:" + cellIndex + " is not a selectable cell. beforeSelect, select events not fired", "info"); }

            if (selectable) {

                this.beforeSelectEvent.fire();

                var cfgSelected = DEF_CFG.SELECTED.key;
                var selected = this.cfg.getProperty(cfgSelected);

                var selectDate = cellDate.concat();

                if (this._indexOfSelectedFieldArray(selectDate) == -1) {
                    selected[selected.length] = selectDate;
                }
                if (this.parent) {
                    this.parent.cfg.setProperty(cfgSelected, selected);
                } else {
                    this.cfg.setProperty(cfgSelected, selected);
                }
                this.renderCellStyleSelected(dCellDate,cell);
                this.selectEvent.fire([selectDate]);

                this.doCellMouseOut.call(cell, null, this);
            }

            return this.getSelectedDates();
        },

        /**
        * Deselects a date or a collection of dates on the current calendar. This method, by default,
        * does not call the render method explicitly. Once deselection has completed, render must be
        * called for the changes to be reflected visually.
        *
        * The method will not attempt to deselect any dates which are OOB (out of bounds, and hence not selectable)
        * and the array of deselected dates passed to the deselectEvent will not contain any OOB dates.
        *
        * If all dates are OOB, beforeDeselect and deselect events will not be fired.
        *
        * @method deselect
        * @param {String/Date/Date[]} date The date string of dates to deselect in the current calendar. Valid formats are
        *        individual date(s) (12/24/2005,12/26/2005) or date range(s) (12/24/2005-1/1/2006).
        *        Multiple comma-delimited dates can also be passed to this method (12/24/2005,12/11/2005-12/13/2005).
        *        This method can also take a JavaScript Date object or an array of Date objects.
        * @return {Date[]}   Array of JavaScript Date objects representing all individual dates that are currently selected.
        */
        deselect : function(date) {
            this.logger.log("Deselect: " + date, "info");

            var aToBeDeselected = this._toFieldArray(date),
                validDates = [],
                selected = [],
                cfgSelected = DEF_CFG.SELECTED.key;

            this.logger.log("Deselection field array: " + aToBeDeselected, "info");

            for (var a=0; a < aToBeDeselected.length; ++a) {
                var toDeselect = aToBeDeselected[a];

                if (!this.isDateOOB(this._toDate(toDeselect))) {

                    if (validDates.length === 0) {
                        this.beforeDeselectEvent.fire();
                        selected = this.cfg.getProperty(cfgSelected);
                    }

                    validDates.push(toDeselect);

                    var index = this._indexOfSelectedFieldArray(toDeselect);
                    if (index != -1) {
                        selected.splice(index,1);
                    }
                }
            }

            if (validDates.length === 0) { this.logger.log("All provided dates were OOB. beforeDeselect and deselect events not fired");}

            if (validDates.length > 0) {
                if (this.parent) {
                    this.parent.cfg.setProperty(cfgSelected, selected);
                } else {
                    this.cfg.setProperty(cfgSelected, selected);
                }
                this.deselectEvent.fire(validDates);
            }

            return this.getSelectedDates();
        },

        /**
        * Deselects a date on the current calendar by referencing the index of the cell that should be deselected.
        * This method is used to easily deselect a single cell (usually with a mouse click) without having to do
        * a full render. The selected style is removed from the cell directly.
        *
        * If the cell is not marked with the CSS_CELL_SELECTABLE class (as is the case by default for out of month
        * or out of bounds cells), the method will not attempt to deselect it and in such a case, beforeDeselect and
        * deselect events will not be fired.
        *
        * @method deselectCell
        * @param {Number} cellIndex The index of the cell to deselect in the current calendar.
        * @return {Date[]} Array of JavaScript Date objects representing all individual dates that are currently selected.
        */
        deselectCell : function(cellIndex) {
            var cell = this.cells[cellIndex],
                cellDate = this.cellDates[cellIndex],
                cellDateIndex = this._indexOfSelectedFieldArray(cellDate);

            var selectable = Dom.hasClass(cell, this.Style.CSS_CELL_SELECTABLE);
            if (!selectable) { this.logger.log("The cell at cellIndex:" + cellIndex + " is not a selectable/deselectable cell", "info"); }

            if (selectable) {

                this.beforeDeselectEvent.fire();

                var selected = this.cfg.getProperty(DEF_CFG.SELECTED.key),
                    dCellDate = this._toDate(cellDate),
                    selectDate = cellDate.concat();

                if (cellDateIndex > -1) {
                    if (this.cfg.getProperty(DEF_CFG.PAGEDATE.key).getMonth() == dCellDate.getMonth() &&
                        this.cfg.getProperty(DEF_CFG.PAGEDATE.key).getFullYear() == dCellDate.getFullYear()) {
                        Dom.removeClass(cell, this.Style.CSS_CELL_SELECTED);
                    }
                    selected.splice(cellDateIndex, 1);
                }

                if (this.parent) {
                    this.parent.cfg.setProperty(DEF_CFG.SELECTED.key, selected);
                } else {
                    this.cfg.setProperty(DEF_CFG.SELECTED.key, selected);
                }

                this.deselectEvent.fire([selectDate]);
            }

            return this.getSelectedDates();
        },

        /**
        * Deselects all dates on the current calendar.
        * @method deselectAll
        * @return {Date[]}  Array of JavaScript Date objects representing all individual dates that are currently selected.
        *      Assuming that this function executes properly, the return value should be an empty array.
        *      However, the empty array is returned for the sake of being able to check the selection status
        *      of the calendar.
        */
        deselectAll : function() {
            this.beforeDeselectEvent.fire();

            var cfgSelected = DEF_CFG.SELECTED.key,
                selected = this.cfg.getProperty(cfgSelected),
                count = selected.length,
                sel = selected.concat();

            if (this.parent) {
                this.parent.cfg.setProperty(cfgSelected, []);
            } else {
                this.cfg.setProperty(cfgSelected, []);
            }

            if (count > 0) {
                this.deselectEvent.fire(sel);
            }

            return this.getSelectedDates();
        },

        // END SELECTION METHODS

        // BEGIN TYPE CONVERSION METHODS

        /**
        * Converts a date (either a JavaScript Date object, or a date string) to the internal data structure
        * used to represent dates: [[yyyy,mm,dd],[yyyy,mm,dd]].
        * @method _toFieldArray
        * @private
        * @param {String/Date/Date[]} date The date string of dates to deselect in the current calendar. Valid formats are
        *        individual date(s) (12/24/2005,12/26/2005) or date range(s) (12/24/2005-1/1/2006).
        *        Multiple comma-delimited dates can also be passed to this method (12/24/2005,12/11/2005-12/13/2005).
        *        This method can also take a JavaScript Date object or an array of Date objects.
        * @return {Array[](Number[])} Array of date field arrays
        */
        _toFieldArray : function(date) {
            var returnDate = [];

            if (date instanceof Date) {
                returnDate = [[date.getFullYear(), date.getMonth()+1, date.getDate()]];
            } else if (Lang.isString(date)) {
                returnDate = this._parseDates(date);
            } else if (Lang.isArray(date)) {
                for (var i=0;i<date.length;++i) {
                    var d = date[i];
                    returnDate[returnDate.length] = [d.getFullYear(),d.getMonth()+1,d.getDate()];
                }
            }

            return returnDate;
        },

        /**
        * Converts a date field array [yyyy,mm,dd] to a JavaScript Date object. The date field array
        * is the format in which dates are as provided as arguments to selectEvent and deselectEvent listeners.
        *
        * @method toDate
        * @param {Number[]} dateFieldArray The date field array to convert to a JavaScript Date.
        * @return {Date} JavaScript Date object representing the date field array.
        */
        toDate : function(dateFieldArray) {
            return this._toDate(dateFieldArray);
        },

        /**
        * Converts a date field array [yyyy,mm,dd] to a JavaScript Date object.
        * @method _toDate
        * @private
        * @deprecated Made public, toDate
        * @param {Number[]}  dateFieldArray The date field array to convert to a JavaScript Date.
        * @return {Date} JavaScript Date object representing the date field array
        */
        _toDate : function(dateFieldArray) {
            if (dateFieldArray instanceof Date) {
                return dateFieldArray;
            } else {
                return DateMath.getDate(dateFieldArray[0],dateFieldArray[1]-1,dateFieldArray[2]);
            }
        },

        // END TYPE CONVERSION METHODS

        // BEGIN UTILITY METHODS

        /**
        * Determines if 2 field arrays are equal.
        * @method _fieldArraysAreEqual
        * @private
        * @param {Number[]} array1 The first date field array to compare
        * @param {Number[]} array2 The first date field array to compare
        * @return {Boolean} The boolean that represents the equality of the two arrays
        */
        _fieldArraysAreEqual : function(array1, array2) {
            var match = false;

            if (array1[0]==array2[0]&&array1[1]==array2[1]&&array1[2]==array2[2]) {
                match=true;
            }

            return match;
        },

        /**
        * Gets the index of a date field array [yyyy,mm,dd] in the current list of selected dates.
        * @method _indexOfSelectedFieldArray
        * @private
        * @param {Number[]}  find The date field array to search for
        * @return {Number}   The index of the date field array within the collection of selected dates.
        *        -1 will be returned if the date is not found.
        */
        _indexOfSelectedFieldArray : function(find) {
            var selected = -1,
                seldates = this.cfg.getProperty(DEF_CFG.SELECTED.key);

            for (var s=0;s<seldates.length;++s) {
                var sArray = seldates[s];
                if (find[0]==sArray[0]&&find[1]==sArray[1]&&find[2]==sArray[2]) {
                    selected = s;
                    break;
                }
            }

            return selected;
        },

        /**
        * Determines whether a given date is OOM (out of month).
        * @method isDateOOM
        * @param {Date} date The JavaScript Date object for which to check the OOM status
        * @return {Boolean} true if the date is OOM
        */
        isDateOOM : function(date) {
            return (date.getMonth() != this.cfg.getProperty(DEF_CFG.PAGEDATE.key).getMonth());
        },

        /**
        * Determines whether a given date is OOB (out of bounds - less than the mindate or more than the maxdate).
        *
        * @method isDateOOB
        * @param {Date} date The JavaScript Date object for which to check the OOB status
        * @return {Boolean} true if the date is OOB
        */
        isDateOOB : function(date) {
            var minDate = this.cfg.getProperty(DEF_CFG.MINDATE.key),
                maxDate = this.cfg.getProperty(DEF_CFG.MAXDATE.key),
                dm = DateMath;

            if (minDate) {
                minDate = dm.clearTime(minDate);
            }
            if (maxDate) {
                maxDate = dm.clearTime(maxDate);
            }

            var clearedDate = new Date(date.getTime());
            clearedDate = dm.clearTime(clearedDate);

            return ((minDate && clearedDate.getTime() < minDate.getTime()) || (maxDate && clearedDate.getTime() > maxDate.getTime()));
        },

        /**
         * Parses a pagedate configuration property value. The value can either be specified as a string of form "mm/yyyy" or a Date object
         * and is parsed into a Date object normalized to the first day of the month. If no value is passed in, the month and year from today's date are used to create the Date object
         * @method _parsePageDate
         * @private
         * @param {Date|String} date Pagedate value which needs to be parsed
         * @return {Date} The Date object representing the pagedate
         */
        _parsePageDate : function(date) {
            var parsedDate;

            if (date) {
                if (date instanceof Date) {
                    parsedDate = DateMath.findMonthStart(date);
                } else {
                    var month, year, aMonthYear;
                    aMonthYear = date.split(this.cfg.getProperty(DEF_CFG.DATE_FIELD_DELIMITER.key));
                    month = parseInt(aMonthYear[this.cfg.getProperty(DEF_CFG.MY_MONTH_POSITION.key)-1], 10)-1;
                    year = parseInt(aMonthYear[this.cfg.getProperty(DEF_CFG.MY_YEAR_POSITION.key)-1], 10) - this.Locale.YEAR_OFFSET;

                    parsedDate = DateMath.getDate(year, month, 1);
                }
            } else {
                parsedDate = DateMath.getDate(this.today.getFullYear(), this.today.getMonth(), 1);
            }
            return parsedDate;
        },

        // END UTILITY METHODS

        // BEGIN EVENT HANDLERS

        /**
        * Event executed before a date is selected in the calendar widget.
        * @deprecated Event handlers for this event should be susbcribed to beforeSelectEvent.
        */
        onBeforeSelect : function() {
            if (this.cfg.getProperty(DEF_CFG.MULTI_SELECT.key) === false) {
                if (this.parent) {
                    this.parent.callChildFunction("clearAllBodyCellStyles", this.Style.CSS_CELL_SELECTED);
                    this.parent.deselectAll();
                } else {
                    this.clearAllBodyCellStyles(this.Style.CSS_CELL_SELECTED);
                    this.deselectAll();
                }
            }
        },

        /**
        * Event executed when a date is selected in the calendar widget.
        * @param {Array} selected An array of date field arrays representing which date or dates were selected. Example: [ [2006,8,6],[2006,8,7],[2006,8,8] ]
        * @deprecated Event handlers for this event should be susbcribed to selectEvent.
        */
        onSelect : function(selected) { },

        /**
        * Event executed before a date is deselected in the calendar widget.
        * @deprecated Event handlers for this event should be susbcribed to beforeDeselectEvent.
        */
        onBeforeDeselect : function() { },

        /**
        * Event executed when a date is deselected in the calendar widget.
        * @param {Array} selected An array of date field arrays representing which date or dates were deselected. Example: [ [2006,8,6],[2006,8,7],[2006,8,8] ]
        * @deprecated Event handlers for this event should be susbcribed to deselectEvent.
        */
        onDeselect : function(deselected) { },

        /**
        * Event executed when the user navigates to a different calendar page.
        * @deprecated Event handlers for this event should be susbcribed to changePageEvent.
        */
        onChangePage : function() {
            this.render();
        },

        /**
        * Event executed when the calendar widget is rendered.
        * @deprecated Event handlers for this event should be susbcribed to renderEvent.
        */
        onRender : function() { },

        /**
        * Event executed when the calendar widget is reset to its original state.
        * @deprecated Event handlers for this event should be susbcribed to resetEvemt.
        */
        onReset : function() { this.render(); },

        /**
        * Event executed when the calendar widget is completely cleared to the current month with no selections.
        * @deprecated Event handlers for this event should be susbcribed to clearEvent.
        */
        onClear : function() { this.render(); },

        /**
        * Validates the calendar widget. This method has no default implementation
        * and must be extended by subclassing the widget.
        * @return Should return true if the widget validates, and false if
        * it doesn't.
        * @type Boolean
        */
        validate : function() { return true; },

        // END EVENT HANDLERS

        // BEGIN DATE PARSE METHODS

        /**
        * Converts a date string to a date field array
        * @private
        * @param {String} sDate   Date string. Valid formats are mm/dd and mm/dd/yyyy.
        * @return    A date field array representing the string passed to the method
        * @type Array[](Number[])
        */
        _parseDate : function(sDate) {
            var aDate = sDate.split(this.Locale.DATE_FIELD_DELIMITER),
                rArray;

            if (aDate.length == 2) {
                rArray = [aDate[this.Locale.MD_MONTH_POSITION-1],aDate[this.Locale.MD_DAY_POSITION-1]];
                rArray.type = Calendar.MONTH_DAY;
            } else {
                rArray = [aDate[this.Locale.MDY_YEAR_POSITION-1] - this.Locale.YEAR_OFFSET, aDate[this.Locale.MDY_MONTH_POSITION-1],aDate[this.Locale.MDY_DAY_POSITION-1]];
                rArray.type = Calendar.DATE;
            }

            for (var i=0;i<rArray.length;i++) {
                rArray[i] = parseInt(rArray[i], 10);
            }

            return rArray;
        },

        /**
        * Converts a multi or single-date string to an array of date field arrays
        * @private
        * @param {String} sDates  Date string with one or more comma-delimited dates. Valid formats are mm/dd, mm/dd/yyyy, mm/dd/yyyy-mm/dd/yyyy
        * @return       An array of date field arrays
        * @type Array[](Number[])
        */
        _parseDates : function(sDates) {
            var aReturn = [],
                aDates = sDates.split(this.Locale.DATE_DELIMITER);

            for (var d=0;d<aDates.length;++d) {
                var sDate = aDates[d];

                if (sDate.indexOf(this.Locale.DATE_RANGE_DELIMITER) != -1) {
                    // This is a range
                    var aRange = sDate.split(this.Locale.DATE_RANGE_DELIMITER),
                        dateStart = this._parseDate(aRange[0]),
                        dateEnd = this._parseDate(aRange[1]),
                        fullRange = this._parseRange(dateStart, dateEnd);

                    aReturn = aReturn.concat(fullRange);
                } else {
                    // This is not a range
                    var aDate = this._parseDate(sDate);
                    aReturn.push(aDate);
                }
            }
            return aReturn;
        },

        /**
        * Converts a date range to the full list of included dates
        * @private
        * @param {Number[]} startDate Date field array representing the first date in the range
        * @param {Number[]} endDate  Date field array representing the last date in the range
        * @return       An array of date field arrays
        * @type Array[](Number[])
        */
        _parseRange : function(startDate, endDate) {
            var dCurrent = DateMath.add(DateMath.getDate(startDate[0],startDate[1]-1,startDate[2]),DateMath.DAY,1),
                dEnd     = DateMath.getDate(endDate[0],  endDate[1]-1,  endDate[2]),
                results = [];

            results.push(startDate);
            while (dCurrent.getTime() <= dEnd.getTime()) {
                results.push([dCurrent.getFullYear(),dCurrent.getMonth()+1,dCurrent.getDate()]);
                dCurrent = DateMath.add(dCurrent,DateMath.DAY,1);
            }
            return results;
        },

        // END DATE PARSE METHODS

        // BEGIN RENDERER METHODS

        /**
        * Resets the render stack of the current calendar to its original pre-render value.
        */
        resetRenderers : function() {
            this.renderStack = this._renderStack.concat();
        },

        /**
         * Removes all custom renderers added to the Calendar through the addRenderer, addMonthRenderer and
         * addWeekdayRenderer methods. Calendar's render method needs to be called after removing renderers
         * to re-render the Calendar without custom renderers applied.
         */
        removeRenderers : function() {
            this._renderStack = [];
            this.renderStack = [];
        },

        /**
        * Clears the inner HTML, CSS class and style information from the specified cell.
        * @method clearElement
        * @param {HTMLTableCellElement} cell The cell to clear
        */
        clearElement : function(cell) {
            cell.innerHTML = "&#160;";
            cell.className="";
        },

        /**
        * Adds a renderer to the render stack. The function reference passed to this method will be executed
        * when a date cell matches the conditions specified in the date string for this renderer.
        * @method addRenderer
        * @param {String} sDates  A date string to associate with the specified renderer. Valid formats
        *         include date (12/24/2005), month/day (12/24), and range (12/1/2004-1/1/2005)
        * @param {Function} fnRender The function executed to render cells that match the render rules for this renderer.
        */
        addRenderer : function(sDates, fnRender) {
            var aDates = this._parseDates(sDates);
            for (var i=0;i<aDates.length;++i) {
                var aDate = aDates[i];

                if (aDate.length == 2) { // this is either a range or a month/day combo
                    if (aDate[0] instanceof Array) { // this is a range
                        this._addRenderer(Calendar.RANGE,aDate,fnRender);
                    } else { // this is a month/day combo
                        this._addRenderer(Calendar.MONTH_DAY,aDate,fnRender);
                    }
                } else if (aDate.length == 3) {
                    this._addRenderer(Calendar.DATE,aDate,fnRender);
                }
            }
        },

        /**
        * The private method used for adding cell renderers to the local render stack.
        * This method is called by other methods that set the renderer type prior to the method call.
        * @method _addRenderer
        * @private
        * @param {String} type  The type string that indicates the type of date renderer being added.
        *         Values are YAHOO.widget.Calendar.DATE, YAHOO.widget.Calendar.MONTH_DAY, YAHOO.widget.Calendar.WEEKDAY,
        *         YAHOO.widget.Calendar.RANGE, YAHOO.widget.Calendar.MONTH
        * @param {Array}  aDates  An array of dates used to construct the renderer. The format varies based
        *         on the renderer type
        * @param {Function} fnRender The function executed to render cells that match the render rules for this renderer.
        */
        _addRenderer : function(type, aDates, fnRender) {
            var add = [type,aDates,fnRender];
            this.renderStack.unshift(add);
            this._renderStack = this.renderStack.concat();
        },

        /**
        * Adds a month to the render stack. The function reference passed to this method will be executed
        * when a date cell matches the month passed to this method.
        * @method addMonthRenderer
        * @param {Number} month  The month (1-12) to associate with this renderer
        * @param {Function} fnRender The function executed to render cells that match the render rules for this renderer.
        */
        addMonthRenderer : function(month, fnRender) {
            this._addRenderer(Calendar.MONTH,[month],fnRender);
        },

        /**
        * Adds a weekday to the render stack. The function reference passed to this method will be executed
        * when a date cell matches the weekday passed to this method.
        * @method addWeekdayRenderer
        * @param {Number} weekday  The weekday (Sunday = 1, Monday = 2 ... Saturday = 7) to associate with this renderer
        * @param {Function} fnRender The function executed to render cells that match the render rules for this renderer.
        */
        addWeekdayRenderer : function(weekday, fnRender) {
            this._addRenderer(Calendar.WEEKDAY,[weekday],fnRender);
        },

        // END RENDERER METHODS

        // BEGIN CSS METHODS

        /**
        * Removes all styles from all body cells in the current calendar table.
        * @method clearAllBodyCellStyles
        * @param {style} style The CSS class name to remove from all calendar body cells
        */
        clearAllBodyCellStyles : function(style) {
            for (var c=0;c<this.cells.length;++c) {
                Dom.removeClass(this.cells[c],style);
            }
        },

        // END CSS METHODS

        // BEGIN GETTER/SETTER METHODS
        /**
        * Sets the calendar's month explicitly
        * @method setMonth
        * @param {Number} month  The numeric month, from 0 (January) to 11 (December)
        */
        setMonth : function(month) {
            var cfgPageDate = DEF_CFG.PAGEDATE.key,
                current = this.cfg.getProperty(cfgPageDate);
            current.setMonth(parseInt(month, 10));
            this.cfg.setProperty(cfgPageDate, current);
        },

        /**
        * Sets the calendar's year explicitly.
        * @method setYear
        * @param {Number} year  The numeric 4-digit year
        */
        setYear : function(year) {
            var cfgPageDate = DEF_CFG.PAGEDATE.key,
                current = this.cfg.getProperty(cfgPageDate);

            current.setFullYear(parseInt(year, 10) - this.Locale.YEAR_OFFSET);
            this.cfg.setProperty(cfgPageDate, current);
        },

        /**
        * Gets the list of currently selected dates from the calendar.
        * @method getSelectedDates
        * @return {Date[]} An array of currently selected JavaScript Date objects.
        */
        getSelectedDates : function() {
            var returnDates = [],
                selected = this.cfg.getProperty(DEF_CFG.SELECTED.key);

            for (var d=0;d<selected.length;++d) {
                var dateArray = selected[d];

                var date = DateMath.getDate(dateArray[0],dateArray[1]-1,dateArray[2]);
                returnDates.push(date);
            }

            returnDates.sort( function(a,b) { return a-b; } );
            return returnDates;
        },

        /// END GETTER/SETTER METHODS ///

        /**
        * Hides the Calendar's outer container from view.
        * @method hide
        */
        hide : function() {
            if (this.beforeHideEvent.fire()) {
                this.oDomContainer.style.display = "none";
                this.hideEvent.fire();
            }
        },

        /**
        * Shows the Calendar's outer container.
        * @method show
        */
        show : function() {
            if (this.beforeShowEvent.fire()) {
                this.oDomContainer.style.display = "block";
                this.showEvent.fire();
            }
        },

        /**
        * Returns a string representing the current browser.
        * @deprecated As of 2.3.0, environment information is available in YAHOO.env.ua
        * @see YAHOO.env.ua
        * @property browser
        * @type String
        */
        browser : (function() {
                    var ua = navigator.userAgent.toLowerCase();
                          if (ua.indexOf('opera')!=-1) { // Opera (check first in case of spoof)
                             return 'opera';
                          } else if (ua.indexOf('msie 7')!=-1) { // IE7
                             return 'ie7';
                          } else if (ua.indexOf('msie') !=-1) { // IE
                             return 'ie';
                          } else if (ua.indexOf('safari')!=-1) { // Safari (check before Gecko because it includes "like Gecko")
                             return 'safari';
                          } else if (ua.indexOf('gecko') != -1) { // Gecko
                             return 'gecko';
                          } else {
                             return false;
                          }
                    })(),
        /**
        * Returns a string representation of the object.
        * @method toString
        * @return {String} A string representation of the Calendar object.
        */
        toString : function() {
            return "Calendar " + this.id;
        },

        /**
         * Destroys the Calendar instance. The method will remove references
         * to HTML elements, remove any event listeners added by the Calendar,
         * and destroy the Config and CalendarNavigator instances it has created.
         *
         * @method destroy
         */
        destroy : function() {

            if (this.beforeDestroyEvent.fire()) {
                var cal = this;

                // Child objects
                if (cal.navigator) {
                    cal.navigator.destroy();
                }

                if (cal.cfg) {
                    cal.cfg.destroy();
                }

                // DOM event listeners
                Event.purgeElement(cal.oDomContainer, true);

                // Generated markup/DOM - Not removing the container DIV since we didn't create it.
                Dom.removeClass(cal.oDomContainer, cal.Style.CSS_WITH_TITLE);
                Dom.removeClass(cal.oDomContainer, cal.Style.CSS_CONTAINER);
                Dom.removeClass(cal.oDomContainer, cal.Style.CSS_SINGLE);
                cal.oDomContainer.innerHTML = "";

                // JS-to-DOM references
                cal.oDomContainer = null;
                cal.cells = null;

                this.destroyEvent.fire();
            }
        }
    };

    YAHOO.widget.Calendar = Calendar;

    /**
    * @namespace YAHOO.widget
    * @class Calendar_Core
    * @extends YAHOO.widget.Calendar
    * @deprecated The old Calendar_Core class is no longer necessary.
    */
    YAHOO.widget.Calendar_Core = YAHOO.widget.Calendar;

    YAHOO.widget.Cal_Core = YAHOO.widget.Calendar;

    })();

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