Progresiv.Calendar = function (firstDayOfWeek, dateStr, onSelected, onClose) {
        // member variables
        this.bShowHistoryEvent=false;        // did the History event on Today fire?
        this.activeDiv = null;
        this.currentDateEl = null;
        this.getDateStatus = null;
        this.getDateToolTip = null;
        this.getDateText = null;
        this.timeout = null;
        this.onSelected = onSelected || null;
        this.onClose = onClose || null;
        this.onFDOW = null;
        this.dragging = false;
        this.hidden = false;
        this.minYear = 1970;
        this.maxYear = 2050;
        this.minMonth = 0;
        this.maxMonth = 11;
        this.dateFormat = Progresiv.Calendar.i18n("DEF_DATE_FORMAT");
        this.ttDateFormat = Progresiv.Calendar.i18n("TT_DATE_FORMAT");
        this.historyDateFormat = "%B %d, %Y";
        this.isPopup = true;
        this.weekNumbers = true;
        this.noGrab = false;
        if (Progresiv.Calendar.prefs.fdow || (Progresiv.Calendar.prefs.fdow == 0)) {
                this.firstDayOfWeek = parseInt(Progresiv.Calendar.prefs.fdow, 10);
        }
        else {
                var fd = 0;
                if (typeof firstDayOfWeek == "number") {
                        fd = firstDayOfWeek;
                } else if (typeof Progresiv.Calendar._FD == 'number') {
                        fd = Progresiv.Calendar._FD;
                }
                this.firstDayOfWeek = fd;
        }
        this.showsOtherMonths = false;
        this.dateStr = dateStr;
        this.showsTime = false;
        this.sortOrder = "asc"; //Sort for multiple dates in ascending order
        this.time24 = true;
        this.timeInterval = null; //step for changing time
        this.yearStep = 2;
        this.hiliteToday = false;
        this.multiple = null;
        // HTML elements
        // FIX FOR OPERA'S BUG : need to create new table for every row of months as the Opera displays
        // THEAD elements and TBODY elements in a really bit unusual order. That's why declareing an array of tables.
        this.table = new Array();
        this.element = null;
        this.tbody = new Array(); //array of rows of months
        this.firstdayname = null;
        // Combo boxes
        this.monthsCombo = null;   // months
        this.hilitedMonth = null;
        this.activeMonth = null;
        this.yearsCombo = null;           // years
        this.hilitedYear = null;
        this.activeYear = null;
        this.histCombo = null;           // history
        this.hilitedHist = null;
        // Information
        this.dateClicked = false;
        this.numberMonths = 1; //number of months displayed
        this.controlMonth = 1; //the number of month with all the combos to control the date
        this.vertical = false; //vertical or horizontal positioning of months
        this.monthsInRow = 1; //number of months in one row
        this.titles = new Array(); //array of titles for the months
        this.rowsOfDayNames = new Array(); //array of rows of day names

        // one-time initializations
        Progresiv.Calendar._initSDN();
};

/**
 * \internal This function is called from the constructor, only once, to
 * initialize some internal arrays containing translation strings.  It is also
 * called from the calendar wizard in order to reconfigure the calendar with a
 * language different than the initially selected one.
 */
Progresiv.Calendar._initSDN = function() {
        if (typeof Progresiv.Calendar._TT._SDN == "undefined") {
                // table of short day names
                if (typeof Progresiv.Calendar._TT._SDN_len == "undefined")
                        Progresiv.Calendar._TT._SDN_len = 3;
                var ar = [];
                for (var i = 8; i > 0;) {
                        ar[--i] = Progresiv.Calendar._TT._DN[i].substr(0, Progresiv.Calendar._TT._SDN_len);
                }
                Progresiv.Calendar._TT._SDN = ar;
                // table of short month names
                if (typeof Progresiv.Calendar._TT._SMN_len == "undefined")
                        Progresiv.Calendar._TT._SMN_len = 3;
                ar = [];
                for (var i = 12; i > 0;) {
                        ar[--i] = Progresiv.Calendar._TT._MN[i].substr(0, Progresiv.Calendar._TT._SMN_len);
                }
                Progresiv.Calendar._TT._SMN = ar;
        }
};

/**
 * Translate a string according to the currently loaded language table.  The
 * \em type variable can be null or missing, or can have one of the following
 * values: "dn", "sdn", "mn", "smn".
 *
 * -# if \em type is null or missing, the given \em str will be looked up in
 *    the translation table.  If a value is found, it is returned.  Otherwise,
 *    the string is looked up in the English table (if present).  If still not
 *    found, the value of \em str itself is returned.
 * -# if \em type is passed, then the value of \em str is looked up in one of
 *    the following internal arrays, depending on the value of \em type:
 *       - DN (day name)
 *       - SDN (short day name)
 *       - MN (month name)
 *       - SMN (short month name)
 *
 * @param str [string] ID of translation text (can be the English text)
 * @param type [string, optional] domain to search through
 *
 * @return the translation according to the current language.
 */
Progresiv.Calendar.i18n = function(str, type) {
        var tr = '';
        if (!type) {
                // normal _TT request
                if (Progresiv.Calendar._TT)
                        tr = Progresiv.Calendar._TT[str];
                if (!tr && Progresiv.Calendar._TT_en)
                        tr = Progresiv.Calendar._TT_en[str];
        } else switch(type) {
            case "dn"  : tr = Progresiv.Calendar._TT._DN[str];  break;
            case "sdn" : tr = Progresiv.Calendar._TT._SDN[str]; break;
            case "mn"  : tr = Progresiv.Calendar._TT._MN[str];  break;
            case "smn" : tr = Progresiv.Calendar._TT._SMN[str]; break;
        }
        if (!tr) tr = "" + str;
        return tr;
};

// ** constants

/// "static", needed for event handlers.
Progresiv.Calendar._C = null;

/// preferences
Progresiv.Calendar.prefs = {
        fdow     : null,        /**< when NULL we will use the options passed at Progresiv.Calendar.setup */
        history  : "",                /**< keeps the history as one big string */
        sortOrder : "asc", /**< Sort order for multiple dates. Ascending by default */
        hsize    : 9                /**< maximum history size (number of stored items) */
};

// BEGIN: CALENDAR STATIC FUNCTIONS

/**
 * Writes the preferences cookie.
 */
Progresiv.Calendar.savePrefs = function() {
        // FIXME: should we make the domain, path and expiration time configurable?
        // I guess these defaults are right though..
        Progresiv.Utils.writeCookie("ZP_CAL", Progresiv.Utils.makePref(this.prefs), null, '/', 30);
};

/**
 * Loads the preference cookie and merges saved prefs to Progresiv.Calendar.prefs.
 */
Progresiv.Calendar.loadPrefs = function() {
        var txt = Progresiv.Utils.getCookie("ZP_CAL"), tmp;
        if (txt) {
                tmp = Progresiv.Utils.loadPref(txt);
                if (tmp)
                        Progresiv.Utils.mergeObjects(this.prefs, tmp);
        }
        // FIXME: DEBUG!
        //this.prefs.history = "1979/03/08,1976/12/28,1978/08/31,1998/09/21";
        //this.prefs.history = null;
};

/**
 * \internal Adds a set of events to make some element behave like a button.
 *
 * @param el [HTMLElement] reference to your element.
 */
Progresiv.Calendar._add_evs = function(el) {
        var C = Progresiv.Calendar;
        Progresiv.Utils.addEvent(el, "mouseover", C.dayMouseOver);
        Progresiv.Utils.addEvent(el, "mousedown", C.dayMouseDown);
        Progresiv.Utils.addEvent(el, "mouseout", C.dayMouseOut);
        if (Progresiv.is_ie)
                Progresiv.Utils.addEvent(el, "dblclick", C.dayMouseDblClick);
};

/**
 * \internal This function undoes what Progresiv.Calendar._add_evs did, therefore
 * unregisters the event handlers.
 *
 * @param el [HTMLElement] reference to your element.
 */
Progresiv.Calendar._del_evs = function(el) {
        var C = this;
        Progresiv.Utils.removeEvent(el, "mouseover", C.dayMouseOver);
        Progresiv.Utils.removeEvent(el, "mousedown", C.dayMouseDown);
        Progresiv.Utils.removeEvent(el, "mouseout", C.dayMouseOut);
        if (Progresiv.is_ie)
                Progresiv.Utils.removeEvent(el, "dblclick", C.dayMouseDblClick);
};

/**
 * Given an HTML element, this function determines if it's part of the "months"
 * combo box and if so it returns the element containing the month name.
 *
 * @param el [HTMLElement] some element (usually that triggered onclick)
 * @return [HTMLElement] element with the month
 */
Progresiv.Calendar.findMonth = function(el) {
        if (typeof el.month != "undefined") {
                return el;
        } else if (el.parentNode && typeof el.parentNode.month != "undefined") {
                return el.parentNode;
        }
        return null;
};

/** Similar to findMonth() but for the history combo. */
Progresiv.Calendar.findHist = function(el) {
        if (typeof el.histDate != "undefined") {
                return el;
        } else if (el.parentNode && typeof el.parentNode.histDate != "undefined") {
                return el.parentNode;
        }
        return null;
};

/** Similar to the above functions, but for the years combo. */
Progresiv.Calendar.findYear = function(el) {
        if (typeof el.year != "undefined") {
                return el;
        } else if (el.parentNode && typeof el.parentNode.year != "undefined") {
                return el.parentNode;
        }
        return null;
};

/**
 * This function displays the months combo box.  It doesn't need any parameters
 * because it uses the static _C variable which maintains a reference to the
 * last calendar that was clicked in the page.
 */
Progresiv.Calendar.showMonthsCombo = function () {
        var cal = Progresiv.Calendar._C;
        if (!cal) {
                return false;
        }
        var cd = cal.activeDiv;
        var mc = cal.monthsCombo;
        var date = cal.date,
                MM = cal.date.getMonth(),
                YY = cal.date.getFullYear(),
                min = (YY == cal.minYear),
                max = (YY == cal.maxYear);
        for (var i = mc.firstChild; i; i = i.nextSibling) {
                var m = i.month;
                Progresiv.Utils.removeClass(i, "hilite");
                Progresiv.Utils.removeClass(i, "active");
                Progresiv.Utils.removeClass(i, "disabled");
                i.disabled = false;
                if ((min && m < cal.minMonth) ||
                    (max && m > cal.maxMonth)) {
                        Progresiv.Utils.addClass(i, "disabled");
                        i.disabled = true;
                }
                if (m == MM)
                        Progresiv.Utils.addClass(cal.activeMonth = i, "active");
        }
        var s = mc.style;
        s.display = "block";
        if (cd.navtype < 0)
                s.left = cd.offsetLeft + "px";
        else {
                var mcw = mc.offsetWidth;
                if (typeof mcw == "undefined")
                        // Konqueror brain-dead techniques
                        mcw = 50;
                s.left = (cd.offsetLeft + cd.offsetWidth - mcw) + "px";
        }
        s.top = (cd.offsetTop + cd.offsetHeight) + "px";
        cal.updateWCH(mc);
};

/**
 * Same as the above, this function displays the history combo box for the
 * active calendar.
 */
Progresiv.Calendar.showHistoryCombo = function() {
        var cal = Progresiv.Calendar._C, a, h, i, cd, hc, s, tmp, div;
        if (!cal)
                return false;
        hc = cal.histCombo;
        while (hc.firstChild)
                hc.removeChild(hc.lastChild);
        if (Progresiv.Calendar.prefs.history) {
                a = Progresiv.Calendar.prefs.history.split(/,/);
                i = 0;
                while (tmp = a[i++]) {
                        tmp = tmp.split(/\//);
                        h = Progresiv.Utils.createElement("div");
                        h.className = Progresiv.is_ie ? "label-IEfix" : "label";
                        h.histDate = new Date(parseInt(tmp[0], 10), parseInt(tmp[1], 10)-1, parseInt(tmp[2], 10),
                                              tmp[3] ? parseInt(tmp[3], 10) : 0,
                                              tmp[4] ? parseInt(tmp[4], 10) : 0);
                        h.appendChild(window.document.createTextNode(h.histDate.print(cal.historyDateFormat)));
                        hc.appendChild(h);
                        if (h.histDate.dateEqualsTo(cal.date))
                                Progresiv.Utils.addClass(h, "active");
                }
        }
        cd = cal.activeDiv;
        s = hc.style;
        s.display = "block";
        s.left = Math.floor(cd.offsetLeft + (cd.offsetWidth-hc.offsetWidth)/2) + "px";
        s.top = (cd.offsetTop + cd.offsetHeight) + "px";
        cal.updateWCH(hc);
        cal.bEventShowHistory=true;        // Set state the we DID enter History event
};

/**
 * Displays the years combo box for the active calendar.  The "fwd" parameter
 * tells it if it should display future (right) or past (left) years.
 *
 * @param fwd [boolean] true if it's for the right combo (future), false
 * otherwise.
 */
Progresiv.Calendar.showYearsCombo = function (fwd) {
        var cal = Progresiv.Calendar._C;
        if (!cal) {
                return false;
        }
        var cd = cal.activeDiv;
        var yc = cal.yearsCombo;
        if (cal.hilitedYear) {
                Progresiv.Utils.removeClass(cal.hilitedYear, "hilite");
        }
        if (cal.activeYear) {
                Progresiv.Utils.removeClass(cal.activeYear, "active");
        }
        cal.activeYear = null;
        var Y = cal.date.getFullYear() + (fwd ? 1 : -1);
        var yr = yc.firstChild;
        var show = false;
        for (var i = 12; i > 0; --i) {
                if (Y >= cal.minYear && Y <= cal.maxYear) {
                        yr.firstChild.data = Y;
                        yr.year = Y;
                        yr.style.display = "block";
                        show = true;
                } else {
                        yr.style.display = "none";
                }
                yr = yr.nextSibling;
                Y += fwd ? cal.yearStep : -cal.yearStep;
        }
        if (show) {
                var s = yc.style;
                s.display = "block";
                if (cd.navtype < 0)
                        s.left = cd.offsetLeft + "px";
                else {
                        var ycw = yc.offsetWidth;
                        if (typeof ycw == "undefined")
                                // Konqueror brain-dead techniques
                                ycw = 50;
                        s.left = (cd.offsetLeft + cd.offsetWidth - ycw) + "px";
                }
                s.top = (cd.offsetTop + cd.offsetHeight) + "px";
        }
        cal.updateWCH(yc);
};

// event handlers

/**
 * This is an event handler that gets called when the mouse button is released
 * upon the document.  The name (tableMouseUp) is because of historic reasons
 * (in the initial calendar versions this event was triggered by the calendar
 * table, but now it's the document who does it).
 *
 * This function does a number of things.  It determines which is the element
 * that was actually clicked.  Note that the "mouseup" event usually means
 * "something was clicked"; it's "mouseup" who fires the "onclick" event, not
 * "mousedown" ;-).  So, if the clicked element is a member of one of the combo
 * boxes such as month, year or history, then the appropriate action is taken
 * (switch month, year or go to history date).
 *
 * Also, the Progresiv.Calendar.cellClick() function is called, which further
 * examines the target element and might do other things.
 *
 * Finally, this handler deregisters itself (it's automatically enabled at
 * "mousedown" on document), stops the event propagation, sets the static _C
 * variable to \em null (meaning "no calendar is currently in use").
 *
 * @param ev [Event] the event object
 * @return false
 */
Progresiv.Calendar.tableMouseUp = function(ev) {
        var cal = Progresiv.Calendar._C;
        if (!cal) {
                return false;
        }
        if (cal.timeout) {
                clearTimeout(cal.timeout);
        }
        var el = cal.activeDiv;
        if (!el) {
                return false;
        }
        var target = Progresiv.Utils.getTargetElement(ev);
                if (typeof(el.navtype) == "undefined") {
                while(!target.calendar) {
                        target = target.parentNode;
                }
        }
        ev || (ev = window.event);
        Progresiv.Utils.removeClass(el, "active");
        if (target == el || target.parentNode == el) {
                Progresiv.Calendar.cellClick(el, ev);
        }
        var mon = Progresiv.Calendar.findMonth(target);
        var date = null;
        if (mon) {
                if (!mon.disabled) {
                        date = new Date(cal.date);
                        if (mon.month != date.getMonth()) {
                                date.setMonth(mon.month);
                                cal.setDate(date);
                                cal.dateClicked = false;
                                cal.callHandler();
                        }
                }
        } else {
                var year = Progresiv.Calendar.findYear(target);
                if (year) {
                        date = new Date(cal.date);
                        if (year.year != date.getFullYear()) {
                                date.setFullYear(year.year);
                                cal.setDate(date);
                                cal.dateClicked = false;
                                cal.callHandler();
                        }
                } else {
                        var hist = Progresiv.Calendar.findHist(target);
                        if (hist && !hist.histDate.dateEqualsTo(cal.date)) {
                                //(date = new Date(cal.date)).setDateOnly(hist.histDate);
                                date = new Date(hist.histDate);
                                cal._init(cal.firstDayOfWeek, cal.date = date);
                                cal.dateClicked = false;
                                cal.callHandler();
                                cal.updateHistory();
                        }
                }
        }
        Progresiv.Utils.removeEvent(window.document, "mouseup", Progresiv.Calendar.tableMouseUp);
        Progresiv.Utils.removeEvent(window.document, "mouseover", Progresiv.Calendar.tableMouseOver);
        Progresiv.Utils.removeEvent(window.document, "mousemove", Progresiv.Calendar.tableMouseOver);
        cal._hideCombos();
        Progresiv.Calendar._C = null;
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * Event handler that gets called when the end-user moves the mouse over the
 * document.
 *
 * This function is pretty complicated too.  It adds hover/active state class
 * to elements that are highlighted and/or clicked.  It determines whether one
 * is trying to modify the time by "drag'n'drop" (the original interface
 * implemented by the calendar).  Finally, it determines if the
 * mouse is over combo box items, also adding/removing hover states and setting
 * some calendar variables with reference to the element involved.
 *
 * @param ev
 *
 * @return
 */
Progresiv.Calendar.tableMouseOver = function (ev) {
        var cal = Progresiv.Calendar._C;
        if (!cal) {
                return;
        }
        var el = cal.activeDiv;
        var target = Progresiv.Utils.getTargetElement(ev);
        if (target == el || target.parentNode == el) {
                Progresiv.Utils.addClass(el, "hilite active");
                Progresiv.Utils.addClass(el.parentNode, "rowhilite");
        } else {
                if (typeof el.navtype == "undefined" ||
                    (el.navtype != 50 && ((el.navtype == 0 && !cal.histCombo) || Math.abs(el.navtype) > 2)))
                        Progresiv.Utils.removeClass(el, "active");
                Progresiv.Utils.removeClass(el, "hilite");
                Progresiv.Utils.removeClass(el.parentNode, "rowhilite");
        }
        ev || (ev = window.event);
        if (el.navtype == 50 && target != el) {
                var pos = Progresiv.Utils.getAbsolutePos(el);
                var w = el.offsetWidth;
                var x = ev.clientX;
                var dx;
                var decrease = true;
                if (x > pos.x + w) {
                        dx = x - pos.x - w;
                        decrease = false;
                } else
                        dx = pos.x - x;

                if (dx < 0) dx = 0;
                var range = el._range;
                var current = el._current;
                var date = cal.date;
                var pm = (date.getHours() >= 12);
                var old = el.firstChild.data;  // old value of the element
                var count = Math.floor(dx / 10) % range.length;
                for (var i = range.length; --i >= 0;)
                        if (range[i] == current)
                                break;
                while (count-- > 0)
                        if (decrease) {
                                if (--i < 0) {
                                        i = range.length - 1;
                                }
                        } else if ( ++i >= range.length ) {
                                i = 0;
                        }

                //ALLOWED TIME CHECK
                if (cal.getDateStatus) {
                        //Current time is changing, check with the callback to see if it's in range of allowed times
                        // Fills the "minute" and "hour" variables with the time that user wants to set, to pass them to the dateStatusHandler for verification.
                        // As the script passes hours in 24 format, we need to convert input values if they are not in the needed format.
                        var minute = null; // minutes to be passed
                        var hour = null; // hours to be passed
                        var new_date = new Date(date); // as we pass date element to the handler, we need to create new one and fill it with new minutes or hours (depending on what had changed)
                        // if "ampm" was clicked
                        if (el.className.indexOf("ampm", 0) != -1) {
                           minute = date.getMinutes(); // minutes didn't change
                           // if the "ampm" value has changed we need to correct hours (add 12 or exclude 12 or set it to zero)
                           if (old != range[i]) {
                              hour = (range[i] == "pm") ? ((date.getHours() == 0) ? (12) : (date.getHours() + 12)) : (date.getHours() - 12);
                           } else {
                              hour = date.getHours();
                           }
                           // updates our new Date object that will be passed to the handler
                           new_date.setHours(hour);
                        }
                        // if hours were clicked
                        if (el.className.indexOf("hour", 0) != -1) {
                           minute = date.getMinutes(); // minutes didn't change
                           hour = (!cal.time24) ? ((pm) ? ((range[i] != 12) ? (parseInt(range[i], 10) + 12) : (12)) : ((range[i] != 12) ? (range[i]) : (0))) : (range[i]); // new value of hours
                           new_date.setHours(hour);
                        }
                        // if minutes were clicked
                        if (el.className.indexOf("minute", 0) != -1) {
                                hour = date.getHours(); // hours didn't change
                                minute = range[i]; // new value of minutes
                                new_date.setMinutes(minute);
                        }
                }
                var status = false;
                // if the handler is set, we pass new values and retrieve result in "status" variable
                if (cal.getDateStatus) {
                   status = cal.getDateStatus(new_date, date.getFullYear(), date.getMonth(), date.getDate(), parseInt(hour, 10), parseInt(minute, 10));
                }
                // if time is enabled, we set new value
                if (status == false) {
                   if ( !((!cal.time24) && (range[i] == "pm") && (hour > 23)) ) {
                      el.firstChild.data = range[i];
                   }
                }
                cal.onUpdateTime();
                //END OF ALLOWED TIME CHECK
        }
        var mon = Progresiv.Calendar.findMonth(target);
        if (mon) {
                if (!mon.disabled) {
                        if (mon.month != cal.date.getMonth()) {
                                if (cal.hilitedMonth) {
                                        Progresiv.Utils.removeClass(cal.hilitedMonth, "hilite");
                                }
                                Progresiv.Utils.addClass(mon, "hilite");
                                cal.hilitedMonth = mon;
                        } else if (cal.hilitedMonth) {
                                Progresiv.Utils.removeClass(cal.hilitedMonth, "hilite");
                        }
                }
        } else {
                if (cal.hilitedMonth) {
                        Progresiv.Utils.removeClass(cal.hilitedMonth, "hilite");
                }
                var year = Progresiv.Calendar.findYear(target);
                if (year) {
                        if (year.year != cal.date.getFullYear()) {
                                if (cal.hilitedYear) {
                                        Progresiv.Utils.removeClass(cal.hilitedYear, "hilite");
                                }
                                Progresiv.Utils.addClass(year, "hilite");
                                cal.hilitedYear = year;
                        } else if (cal.hilitedYear) {
                                Progresiv.Utils.removeClass(cal.hilitedYear, "hilite");
                        }
                } else {
                        if (cal.hilitedYear) {
                                Progresiv.Utils.removeClass(cal.hilitedYear, "hilite");
                        }
                        var hist = Progresiv.Calendar.findHist(target);
                        if (hist) {
                                if (!hist.histDate.dateEqualsTo(cal.date)) {
                                        if (cal.hilitedHist) {
                                                Progresiv.Utils.removeClass(cal.hilitedHist, "hilite");
                                        }
                                        Progresiv.Utils.addClass(hist, "hilite");
                                        cal.hilitedHist = hist;
                                } else if (cal.hilitedHist) {
                                        Progresiv.Utils.removeClass(cal.hilitedHist, "hilite");
                                }
                        } else if (cal.hilitedHist) {
                                Progresiv.Utils.removeClass(cal.hilitedHist, "hilite");
                        }
                }
        }
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * This is a simple function that stops a "mousedown" related to the calendar's
 * table element.  This helps avoiding text selection in certain browsers (most
 * notably, Safari, since Mozilla already has a better way).
 *
 * @param ev [Event] the Event object
 * @return false
 */
Progresiv.Calendar.tableMouseDown = function (ev) {
        if (Progresiv.Utils.getTargetElement(ev) == Progresiv.Utils.getElement(ev)) {
                return Progresiv.Utils.stopEvent(ev);
        }
};

/**
 * \defgroup dndmove Drag'n'drop (move calendar) functions
 *
 * Contains some functions that implement calendar "drag'n'drop" facility which
 * allows one to move the calendar around the browser's view.
 */
//@{
/**
 * Called at mouseover and/or mousemove on document, this function repositions
 * the calendar according to the current mouse position.
 *
 * @param ev [Event] The Event object
 * @return false
 */
Progresiv.Calendar.calDragIt = function (ev) {
        ev || (ev = window.event);
        var cal = Progresiv.Calendar._C;
        if (!(cal && cal.dragging)) {
                return false;
        }
        var posX = ev.clientX + window.document.body.scrollLeft;
        var posY = ev.clientY + window.document.body.scrollTop;
        cal.hideShowCovered();
        var st = cal.element.style, L = posX - cal.xOffs, T = posY - cal.yOffs;
        st.left = L + "px";
        st.top = T + "px";
        Progresiv.Utils.setupWCH(cal.WCH, L, T);
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * Gets called when the drag and drop operation is finished; thus, at
 * "onmouseup".  This function unregisters D'n'D event handlers and calls
 * Progresiv.Calendar.hideShowCovered() which repaints as appropriate any
 * "windowed controls" that might have been hidden by the end user moving the
 * calendar. (note, this is only for IE5; for IE5.5 there are better--albeit
 * uglier--workarounds).
 *
 * @param ev [Event] the event object
 * @return false
 */
Progresiv.Calendar.calDragEnd = function (ev) {
        var cal = Progresiv.Calendar._C;
        if (!cal) {
                return false;
        }
        cal.dragging = false;
        Progresiv.Utils.removeEvent(window.document, "mousemove", Progresiv.Calendar.calDragIt);
        Progresiv.Utils.removeEvent(window.document, "mouseover", Progresiv.Calendar.calDragIt);
        Progresiv.Utils.removeEvent(window.document, "mouseup", Progresiv.Calendar.calDragEnd);
        Progresiv.Calendar.tableMouseUp(ev);
        cal.hideShowCovered();
};
//@}

/**
 * Called when the mouse button is pressed upon a button.  The name of this
 * function is so for historical reasons; currently, this function is used for
 * \em any type of buttons used in the calendar, not only "days".
 *
 * This function does quite some things.  It checks if the clicked cell is the
 * title bar or the status bar, in which case it starts the calendar dragging
 * mechanism (cal._dragStart()).  If the cell is a time part, then it registers
 * Progresiv.Calendar.tableMouseOver() event handler on the document.  If the
 * cell is a "navigation" button (next/prev year or month, or today) then a
 * timeout is created that will show the appropriate combo box if the button is
 * not quickly depressed.
 *
 * @param ev [Event] the event object
 * @return false
 */
Progresiv.Calendar.dayMouseDown = function(ev) {
        var canDrag = true;
        var el = Progresiv.Utils.getElement(ev);
        if (el.disabled) {
                return false;
        }
        var cal = el.calendar;
        //BEGIN: fix for the extra information bug in IE
        while(!cal) {
                el = el.parentNode;
                cal = el.calendar;
        }
        //END
        cal.bEventShowHistory=false;        // Set state the we DID NOT enter History event
        cal.activeDiv = el;
        Progresiv.Calendar._C = cal;
        if (el.navtype != 300) {
                if (el.navtype == 50) {
                        //turns off changing the time by dragging if timeInterval is set
                        if (!((cal.timeInterval == null) || ((cal.timeInterval < 60) && (el.className.indexOf("hour", 0) != -1)))) {canDrag = false;}
                        el._current = el.firstChild.data;
                        if (canDrag) {Progresiv.Utils.addEvent(window.document, "mousemove", Progresiv.Calendar.tableMouseOver);}
                } else {
                        if (((el.navtype == 201) || (el.navtype == 202)) && (cal.timeInterval > 30) && (el.timePart.className.indexOf("minute", 0) != -1)) {canDrag = false;}
                        if (canDrag) {Progresiv.Utils.addEvent(window.document, Progresiv.is_ie5 ? "mousemove" : "mouseover", Progresiv.Calendar.tableMouseOver);}
                }
                if (canDrag) {Progresiv.Utils.addClass(el, "hilite active");}
                Progresiv.Utils.addEvent(window.document, "mouseup", Progresiv.Calendar.tableMouseUp);
        } else if (cal.isPopup) {
                cal._dragStart(ev);
        }
        if (el.navtype == -1 || el.navtype == 1) {
                if (cal.timeout) clearTimeout(cal.timeout);
                cal.timeout = setTimeout("Progresiv.Calendar.showMonthsCombo()", 250);
        } else if (el.navtype == -2 || el.navtype == 2) {
                if (cal.timeout) clearTimeout(cal.timeout);
                cal.timeout = setTimeout((el.navtype > 0) ? "Progresiv.Calendar.showYearsCombo(true)" : "Progresiv.Calendar.showYearsCombo(false)", 250);
        } else if (el.navtype == 0 && Progresiv.Calendar.prefs.history) {
                if (cal.timeout) clearTimeout(cal.timeout);
                cal.timeout = setTimeout("Progresiv.Calendar.showHistoryCombo()", 250);
        } else {
                cal.timeout = null;
        }
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * For IE5 we can't make unselectable elements, but we can void the selection
 * immediately after the double click event :D.  This function is a double
 * click handler which does exactly that.  Uses IE-specific functions.
 */
Progresiv.Calendar.dayMouseDblClick = function(ev) {
        Progresiv.Calendar.cellClick(Progresiv.Utils.getElement(ev), ev || window.event);
        if (Progresiv.is_ie)
                window.document.selection.empty();
};

/**
 * This function gets called at "onmouseover" events that trigger on any kind
 * of button, like dates, navigation buttons, etc.  Basically, the function
 * computes and caches the tooltip (if it's a date cell for instance) and
 * displays it in the status bar.  If the cell is not a navigation button, it
 * will also add "rowhilite" class to the containing TR element.
 *
 * @param ev [Event] the event object.
 * @return false
 */
Progresiv.Calendar.dayMouseOver = function(ev) {
        var el = Progresiv.Utils.getElement(ev),
                caldate = el.caldate;
        //BEGIN: fix for the extra information bug in IE
        while (!el.calendar) {
                el = el.parentNode;
                caldate = el.caldate;
        }
        //END
        var cal = el.calendar;
        var cel = el.timePart;
        if (caldate)
                caldate = new Date(caldate[0], caldate[1], caldate[2]);
        if (Progresiv.Utils.isRelated(el, ev) || Progresiv.Calendar._C || el.disabled) {
                return false;
        }
        if (el.ttip) {
                if (el.ttip.substr(0, 1) == "_") {
                        el.ttip = caldate.print(el.calendar.ttDateFormat) + el.ttip.substr(1);
                }
                el.calendar.showHint(el.ttip);
        }
        if (el.navtype != 300) {
                //turns off highliting of the time part which can not be changed by dragging
                if (!((cal.timeInterval == null) || ((cal.timeInterval < 60) && (el.className.indexOf("hour", 0) != -1))) && (el.navtype == 50)) {return Progresiv.Utils.stopEvent(ev);}
                if (((el.navtype == 201) || (el.navtype == 202)) && (cal.timeInterval > 30) && (cel.className.indexOf("minute", 0) != -1)) {return Progresiv.Utils.stopEvent(ev);}
                Progresiv.Utils.addClass(el, "hilite");
                if (caldate) {
                        Progresiv.Utils.addClass(el.parentNode, "rowhilite");
                }
        }
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * Gets called when the mouse leaves a button.  This function "undoes" what
 * dayMouseOver did, that is, it removes the "rowhilite" class from the
 * containing TR and restores the status bar display to read "Select date".
 *
 * @param ev [Event] the event object.
 * @return false
 */
Progresiv.Calendar.dayMouseOut = function(ev) {
        var el = Progresiv.Utils.getElement(ev);
        //BEGIN: fix for the extra information bug in IE
        while (!el.calendar) {
                el = el.parentNode;
                caldate = el.caldate;
        }
        //END
        if (Progresiv.Utils.isRelated(el, ev) || Progresiv.Calendar._C || el.disabled)
                return false;
        Progresiv.Utils.removeClass(el, "hilite");
        if (el.caldate)
                Progresiv.Utils.removeClass(el.parentNode, "rowhilite");
        if (el.calendar)
                el.calendar.showHint(Progresiv.Calendar.i18n("SEL_DATE"));
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * The generic "click" handler.  This function handles actions on any kind of
 * buttons that appear inside our calendar.  It determines the button type by
 * querying \em el.navtype.  The following types of objects are supported:
 *
 * - Date cells (navtype is undefined).  The function will select that date,
 *   add appropriate class names and remove them from the previously selected
 *   date.  If the date in the calendar \em has \em changed, it calls the
 *   calendar's onSelect handler (see the constructor).  If multiple dates is
 *   enabled, it will not unselect previously selected date but rather maintain
 *   an array of dates which will be avaliable to the onSelect or onClose
 *   handler.
 * - The Close button (navtype == 200).  If this is clicked, then the
 *   calendar's onClose handler is called immediately.
 * - The Today button (navtype == 0).  The calendar will jump to the "today"
 *   date and time, unless it's already there.
 * - The About button (navtype == 400).  It will display an alert with the
 *   "about message", as defined in the translation file.
 * - Previous year (navtype == -2)
 * - Previous month (navtype == -1)
 * - Next month (navtype == 1)
 * - Next year (navtype == 2)
 * - Day names (navtype == 100).  If any of them is clicked, the calendar will
 *   display that day as the first day of week.  It calls the "onFDOW" event
 *   handler if defined.
 * - Time parts (navtype == 50).  If any of them is clicked, this function will
 *   determine if it's a click or shift-click, and will take the appropriate
 *   action (simple click means add 1, shift-click means substract 1 from that
 *   time part).  Then it calls onUpdateTime() to refresh the display.
 * - Time scroll buttons (navtype == 201 or navtype == 202).  If such buttons
 *   are clicked, the time part involved is determined and it is incremented or
 *   decremented with the current step (default: 5).  201 is for "add", 202 for
 *   "substract".
 *
 * @param el [HTMLElement] the object being clicked on
 * @param ev [Event] the event object
 */
Progresiv.Calendar.cellClick = function(el, ev) {
        var cal = el.calendar;
        var closing = false;
        var newdate = false;
        var date = null;
        //BEGIN: fix for the extra information bug in IE
        while(!cal) {
                el = el.parentNode;
                cal = el.calendar;
        }
        //END
        if (typeof el.navtype == "undefined") {
                if (cal.currentDateEl) {
                        Progresiv.Utils.removeClass(cal.currentDateEl, "selected");
                        Progresiv.Utils.addClass(el, "selected");
                        closing = (cal.currentDateEl == el);
                        if (!closing) {
                                cal.currentDateEl = el;
                        }
                }
                cal.date.setDateOnly(new Date(el.caldate[0], el.caldate[1], el.caldate[2]));
                date = cal.date;
                var other_month = !(cal.dateClicked = !el.otherMonth);
                if (!other_month && cal.multiple)
                        cal._toggleMultipleDate(new Date(date));
                newdate = true;
                // a date was clicked
                if (other_month)
                        cal._init(cal.firstDayOfWeek, date);
                cal.onSetTime();
        } else {
                if (el.navtype == 200) {
                        Progresiv.Utils.removeClass(el, "hilite");
                        cal.callCloseHandler();
                        return;
                }
                date = new Date(cal.date);
                if (el.navtype == 0 && !cal.bEventShowHistory)
                        // Set date to Today if Today clicked AND History NOT shown
                        date.setDateOnly(new Date()); // TODAY
                        
                // unless "today" was clicked, we assume no date was clicked so
                // the selected handler will know not to close the calenar when
                // in single-click mode.
                // cal.dateClicked = (el.navtype == 0);
                cal.dateClicked = false;
                var year = date.getFullYear();
                var mon = date.getMonth();
                function setMonth(m) {
                        var day = date.getDate();
                        var max = date.getMonthDays(m);
                        if (day > max) {
                                date.setDate(max);
                        }
                        date.setMonth(m);
                };
                
                switch (el.navtype) {
                    case 400:
                        Progresiv.Utils.removeClass(el, "hilite");
                        var text = Progresiv.Calendar.i18n("ABOUT");
                        if (typeof text != "undefined") {
                                text += cal.showsTime ? Progresiv.Calendar.i18n("ABOUT_TIME") : "";
                        } else {
                                // FIXME: this should be removed as soon as lang files get updated!
                                text = "Help and about box text is not translated into this language.\n";
                        }
                        alert(text);
                        return;
                    case -2:
                        if (year > cal.minYear) {
                                date.setFullYear(year - 1);
                        }
                        break;
                    case -1:
                        if (mon > 0) {
                                setMonth(mon - 1);
                        } else if (year-- > cal.minYear) {
                                date.setFullYear(year);
                                setMonth(11);
                        }
                        break;
                    case 1:
                        if (mon < 11) {
                                setMonth(mon + 1);
                        } else if (year < cal.maxYear) {
                                date.setFullYear(year + 1);
                                setMonth(0);
                        }
                        break;
                    case 2:
                        if (year < cal.maxYear) {
                                date.setFullYear(year + 1);
                        }
                        break;
                    case 100:
                        cal.setFirstDayOfWeek(el.fdow);
                        Progresiv.Calendar.prefs.fdow = cal.firstDayOfWeek;
                        Progresiv.Calendar.savePrefs();
                        if (cal.onFDOW)
                                cal.onFDOW(cal.firstDayOfWeek);
                        return;
                    case 50:
                        //turns off time changing if timeInterval is set with special value
                        if (!((cal.timeInterval == null) || ((cal.timeInterval < 60) && (el.className.indexOf("hour", 0) != -1)))) {break;}
                        var range = el._range;
                        var current = el.firstChild.data;
                        var pm = (date.getHours() >= 12);
                        for (var i = range.length; --i >= 0;)
                                if (range[i] == current)
                                        break;
                        if (ev && ev.shiftKey) {
                                if (--i < 0) {
                                        i = range.length - 1;
                                }
                        } else if ( ++i >= range.length ) {
                                        i = 0;
                                }

                //ALLOWED TIME CHECK
                        if (cal.getDateStatus) { //Current time is changing, check with the callback to see if it's in range
                                // Fills "minute" and "hour" variables with the time that user wants to set, to pass them to the dateStatusHandler.
                                // As the script passes hours in 24 format, we need to convert inputed values if they are not in the needed format
                                var minute = null; // minutes to be passed
                                var hour = null; // hours to be passed
                                // as we pass date element to the handler, we need to create new one and fill it with new minutes or hours (depending on what had changed)
                                var new_date = new Date(date);
                                // if "ampm" was clicked
                                if (el.className.indexOf("ampm", 0) != -1) {
                                        minute = date.getMinutes(); // minutes didn't change
                                        // if the "ampm" value has changed we need to correct hours (add 12 or exclude 12 or set it to zero)
                                        hour = (range[i] == "pm") ? ((date.getHours() == 12) ? (date.getHours()) : (date.getHours() + 12)) : (date.getHours() - 12);
                                        // if the time is disabled we seek the first one disabled.
                                        // It fixes the bug when you can not change from 'am' to 'pm' or vice versa for the dates that have restrictions for time.
                                        // This part of code is very easy to understand, so it don't need much comments
                                        if ( cal.getDateStatus && cal.getDateStatus(new_date, date.getFullYear(), date.getMonth(), date.getDate(), parseInt(hour, 10), parseInt(minute, 10)) ) {
                                           var dirrect;
                                           if (range[i] == "pm") {
                                              dirrect = -5;
                                           } else {
                                              dirrect = 5;
                                           }
                                           hours = hour;
                                           minutes = minute;
                                           do {
                                              minutes += dirrect;
                                              if (minutes >=60) {
                                                 minutes -= 60;
                                                 ++hours;
                                                 if (hours >= 24) hours -= 24;
                                                 new_date.setHours(hours);
                                              }
                                              if (minutes < 0) {
                                                 minutes += 60;
                                                 --hours;
                                                   if (hours < 0) hours += 24;
                                                 new_date.setHours(hours);
                                              }
                                              new_date.setMinutes(minutes);
                                              if (!cal.getDateStatus(new_date, date.getFullYear(), date.getMonth(), date.getDate(), parseInt(hours, 10), parseInt(minutes, 10))) {
                                                 hour = hours;
                                                 minute = minutes;
                                                 if (hour > 12) i = 1; else i = 0;
                                                 cal.date.setHours(hour);
                                                 cal.date.setMinutes(minute);
                                                 cal.onSetTime();
                                              }
                                           } while ((hour != hours) || (minute != minutes));
                                        }
                                        // updates our new Date object that will be passed to the handler
                                        new_date.setHours(hour);
                                }
                                // if hours were clicked
                                if (el.className.indexOf("hour", 0) != -1) {
                                   minute = date.getMinutes(); // minutes didn't change
                                   hour = (!cal.time24) ? ((pm) ? ((range[i] != 12) ? (parseInt(range[i], 10) + 12) : (12)) : ((range[i] != 12) ? (range[i]) : (0))) : (range[i]);  // new value of hours
                                   new_date.setHours(hour);
                                }
                                // if minutes were clicked
                                if (el.className.indexOf("minute", 0) != -1) {
                                   hour = date.getHours(); // hours didn't change
                                   minute = range[i]; // new value of minutes
                                   new_date.setMinutes(minute);
                                }
                        }
                        var status = false;
                        // if the handler is set, we pass new values and retreive result in "status" variable
                        if (cal.getDateStatus) {
                           status = cal.getDateStatus(new_date, date.getFullYear(), date.getMonth(), date.getDate(), parseInt(hour, 10), parseInt(minute, 10));
                        }
                        if (!status) {
                           el.firstChild.data = range[i];
                        }
                        //END OF ALLOWED TIME CHECK

                        cal.onUpdateTime();
                        return;
                    case 201: // timepart, UP
                    case 202: // timepart, DOWN
                        var cel = el.timePart;
                        //turns off time changing if timeInterval is set with special value
                        if ((cel.className.indexOf("minute", 0) != -1) && (cal.timeInterval > 30)) {break;}
                        var val = parseInt(cel.firstChild.data, 10);
                        var pm = (date.getHours() >= 12);
                        var range = cel._range;
                        for (var i = range.length; --i >= 0;)
                                if (val == range[i]) {
                                        val = i;
                                        break;
                                }
                        var step = cel._step;
                        if (el.navtype == 201) {
                                val = step*Math.floor(val/step);
                                val += step;
                                if (val >= range.length)
                                        val = 0;
                        } else {
                                val = step*Math.ceil(val/step);
                                val -= step;
                                if (val < 0)
                                        val = range.length-step;
                        }

                        //ALLOWED TIME CHECK
                        if (cal.getDateStatus) { //Current time is changing, check with the callback to see if it's in range of allowed times
                           // Fills "minute" and "hour" variables with the time that user wants to set, to pass them to the dateStatusHandler.
                           // As the script passes hours in 24 format, we need to convert inputed values if they are not in the needed format
                           var minute = null; // minutes to be passed
                           var hour = null; // hours to be passed
                           // as we pass date element to the handler, we need to create new one and fill it with new minutes or hours (depending on what had changed)
                           var new_date = new Date(date);
                           // if hours were changed
                           if (cel.className == "hour") {
                              minute = date.getMinutes();
                              hour = (!cal.time24) ? ((pm) ? ((range[val] != 12) ? (parseInt(range[val], 10) + 12) : (12)) : ((range[val] != 12) ? (range[val]) : (0))) : (range[val]);
                              new_date.setHours(hour);
                           }
                           // if minutes were changed
                           if (cel.className == "minute") {
                              hour = date.getHours();
                              minute = val;
                              new_date.setMinutes(range[val]);
                           }
                        }
                        var status = false;
                        // if the handler is set, we pass new values and retreive result in "status" variable
                        if (cal.getDateStatus) {
                           status = cal.getDateStatus(new_date, date.getFullYear(), date.getMonth(), date.getDate(), parseInt(hour, 10), parseInt(minute, 10));
                        }
                        if (!status) {
                           cel.firstChild.data = range[val];
                        }
                        cal.onUpdateTime();
                        //END OF ALLOWED TIME CHECK
                        return;
                    case 0:
                        // TODAY will bring us here
                        //fix for the today bug for the special dates
                        
                        if (cal.getDateStatus && ((cal.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate()) == true) || (cal.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate()) == "disabled"))) {
                                // remember, "date" was previously set to new
                                // Date() if TODAY was clicked; thus, it
                                // contains today date.
                                return false;
                        }
                        break;
                }
                
                if (!date.equalsTo(cal.date)) {
						
                        cal.setDate(date);
                        newdate = !(el.navtype && (el.navtype >= -2 && el.navtype <=2));
                }
        }
        if (newdate) {
                cal.callHandler();
        }
        if (closing) {
                Progresiv.Utils.removeClass(el, "hilite");
                cal.callCloseHandler();
        }
};

// END: CALENDAR STATIC FUNCTIONS

// BEGIN: CALENDAR OBJECT FUNCTIONS

/**
 * This function creates the calendar HTML elements inside the given parent.
 * If _par is null than it creates a popup calendar inside the BODY element.
 * If _par is an element, be it BODY, then it creates a non-popup calendar
 * (still hidden).
 *
 * The function looks rather complicated, but what it does is quite simple.
 * The basic calendar elements will be created, that is, a containing DIV, a
 * TABLE that contains a headers (titles, navigation bar and day names bars), a
 * body containing up to 12 months, each has 6 rows with 7 or 8 cells (this depends on whether week
 * numbers are on or off) and a footer containing the status bar.  Appropriate
 * event handlers are assigned to all buttons or to the titles and status bar
 * (for drag'n'drop).
 *
 * This function also builds the time selector if the calendar is configured
 * so, and it also creates the elements required for combo boxes (years,
 * months, history).
 *
 * This function does not display day names or dates.  This is done in
 * Progresiv.Calendar.prototype._init().  Therefore, by separating these 2
 * actions we can make date switching happen much faster because the _init
 * function will already have the elements in place (so we don't need to create
 * them again and again).  This was a major improvement which got in
 * the calendar v0.9.1.
 *
 * @param _par
 */
Progresiv.Calendar.prototype.create = function (_par) {
        var parent = null;
        if (! _par) {
                // default parent is the document body, in which case we create
                // a popup calendar.
                parent = window.document.getElementsByTagName("body")[0];
                this.isPopup = true;
                this.WCH = Progresiv.Utils.createWCH();
        } else {
                parent = _par;
                this.isPopup = false;
        }
        this.date = this.dateStr ? new Date(this.dateStr) : new Date();

        var table = Progresiv.Utils.createElement("table");
        //Fix for the Opera's bug : pushing the first row of month (one table) to the calendars table array
        this.table.push(table);
        table.cellSpacing = 0;
        table.cellPadding = 0;
        table.calendar = this;
        Progresiv.Utils.addEvent(table, "mousedown", Progresiv.Calendar.tableMouseDown);

        var div = Progresiv.Utils.createElement("div");
        this.element = div;
        div.className = "calendar";
        if (this.isPopup) {
                div.style.position = "absolute";
                div.style.display = "none";
        }
        div.appendChild(table);

        var cell = null;
        var row = null;

        var cal = this;
        var hh = function (text, cs, navtype) {
                cell = Progresiv.Utils.createElement("td", row);
                cell.colSpan = cs;
                cell.className = "button";
                if (Math.abs(navtype) <= 2)
                        cell.className += " nav";
                Progresiv.Calendar._add_evs(cell);
                cell.calendar = cal;
                cell.navtype = navtype;
                if (text.substr(0, 1) != "&") {
                        cell.appendChild(document.createTextNode(text));
                }
                else {
                        // FIXME: dirty hack for entities
                        cell.innerHTML = text;
                }
                return cell;
        };
        //Here we calculate the number of rows for multimonth calendar
        if (this.numberMonths > 1) {
                var title_length = ((this.weekNumbers) ? (8) : (7)) * this.monthsInRow - 2;
                var thead = Progresiv.Utils.createElement("thead", table);
                row = Progresiv.Utils.createElement("tr", thead);
                hh("?", 1, 400).ttip = Progresiv.Calendar.i18n("INFO");
                this.title = hh("", title_length, 300);
                this.title.className = "title";
                this.title.ttip = Progresiv.Calendar.i18n("DRAG_TO_MOVE");
                this.title.style.cursor = "move";
                hh("&#x00d7;", 1, 200).ttip = Progresiv.Calendar.i18n("CLOSE");

                row = Progresiv.Utils.createElement("tr", thead);
                this._nav_py = hh("&#x00ab;", 1, -2);
                this._nav_py.ttip = Progresiv.Calendar.i18n("PREV_YEAR");
                this._nav_pm = hh("&#x2039;", 1, -1);
                this._nav_pm.ttip = Progresiv.Calendar.i18n("PREV_MONTH");
                this._nav_now = hh(Progresiv.Calendar.i18n("TODAY"), title_length - 2, 0);
                this._nav_now.ttip = Progresiv.Calendar.i18n("GO_TODAY");
                this._nav_nm = hh("&#x203a;", 1, 1);
                this._nav_nm.ttip = Progresiv.Calendar.i18n("NEXT_MONTH");
                this._nav_ny = hh("&#x00bb;", 1, 2);
                this._nav_ny.ttip = Progresiv.Calendar.i18n("NEXT_YEAR");
        }
        var rowsOfMonths = Math.floor(this.numberMonths / this.monthsInRow);
        if (this.numberMonths % this.monthsInRow > 0) {
                ++rowsOfMonths;
        }
        //Every iteration of this cycle creates a row of months in the calendar
        for (var l = 1; l <= rowsOfMonths; ++l) {
                var thead = Progresiv.Utils.createElement("thead", table);
                row = Progresiv.Utils.createElement("tr", thead);
                var title_length = 5;
                //this.isPopup && --title_length;
                this.weekNumbers && ++title_length;
                //creating the titles for the months
                this.titles[l] = new Array();
                for (var k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                        if (this.numberMonths == 1) {
                                hh("?", 1, 400).ttip = Progresiv.Calendar.i18n("INFO");
                                this.title = hh("", title_length, 300);
                                this.title.className = "title";
                                if (this.isPopup) {
                                        this.title.ttip = Progresiv.Calendar.i18n("DRAG_TO_MOVE");
                                        this.title.style.cursor = "move";
                                        hh("&#x00d7;", 1, 200).ttip = Progresiv.Calendar.i18n("CLOSE");
                                } else {
                                        cell = Progresiv.Utils.createElement("td", row);
                                        cell.colSpan = 1;
                                        cell.className = "button";
                                        cell.innerHTML = "<p>&nbsp</p>";
                                }
                        } else {
                                cell = Progresiv.Utils.createElement("td", row);
                                cell.colSpan = 1;
                                cell.className = "button";
                                cell.innerHTML = "<p>&nbsp</p>";
                                this.titles[l][k] = hh("", title_length, 300);
                                this.titles[l][k].className = "title";
                                cell = Progresiv.Utils.createElement("td", row);
                                cell.colSpan = 1;
                                cell.className = "button";
                                cell.innerHTML = "<p>&nbsp</p>";
                        }
                }

                row = Progresiv.Utils.createElement("tr", thead);
                row.className = "headrow";
                //creating the controls for the control month or empty cell for others
                for (k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                        if (this.numberMonths == 1) {
                                this._nav_py = hh("&#x00ab;", 1, -2);
                                this._nav_py.ttip = Progresiv.Calendar.i18n("PREV_YEAR");

                                this._nav_pm = hh("&#x2039;", 1, -1);
                                this._nav_pm.ttip = Progresiv.Calendar.i18n("PREV_MONTH");

                                this._nav_now = hh(Progresiv.Calendar.i18n("TODAY"), this.weekNumbers ? 4 : 3, 0);
                                this._nav_now.ttip = Progresiv.Calendar.i18n("GO_TODAY");

                                this._nav_nm = hh("&#x203a;", 1, 1);
                                this._nav_nm.ttip = Progresiv.Calendar.i18n("NEXT_MONTH");

                                this._nav_ny = hh("&#x00bb;", 1, 2);
                                this._nav_ny.ttip = Progresiv.Calendar.i18n("NEXT_YEAR");

                        }
                }

        // day names
                row = Progresiv.Utils.createElement("tr", thead);
                row.className = "daynames";
                for (k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                        if (this.weekNumbers) {
                                cell = Progresiv.Utils.createElement("td", row);
                                cell.className = "name wn";
                                cell.appendChild(window.document.createTextNode(Progresiv.Calendar.i18n("WK")));
                                if (k > 1) {
                                        Progresiv.Utils.addClass(cell, "month-left-border");
                                }
                                var cal_wk = Progresiv.Calendar.i18n("WK")
                                        if (cal_wk == null) {
                                                //if it's not defined in the language file, leave it blank
                                                cal_wk = "";
                                        }

                        }
                        for (var i = 7; i > 0; --i) {
                                cell = Progresiv.Utils.createElement("td", row);
                                cell.appendChild(window.document.createTextNode(""));
                                if (!i) {
                                        cell.navtype = 100;
                                        cell.calendar = this;
                                        Progresiv.Calendar._add_evs(cell);
                                }
                        }
                }
                this.firstdayname = row.childNodes[this.weekNumbers?1:0];
                this.rowsOfDayNames[l] = this.firstdayname;
                this._displayWeekdays();

                var tbody = Progresiv.Utils.createElement("tbody", table);
                this.tbody[l] = tbody;

                for (i = 6; i > 0; --i) {
                        //creating a row of days for all the months in the row
                        row = Progresiv.Utils.createElement("tr", tbody);
                        for (k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                                if (this.weekNumbers) {
                                        cell = Progresiv.Utils.createElement("td", row);
                                        cell.appendChild(document.createTextNode(""));
                                }
                                for (var j = 7; j > 0; --j) {
                                        cell = Progresiv.Utils.createElement("td", row);
                                        cell.appendChild(document.createTextNode(""));
                                        cell.calendar = this;
                                        Progresiv.Calendar._add_evs(cell);
                                }
                        }
                }
                //FIX for Opeara's bug : creating new table for each row of months
                if (l != rowsOfMonths) {
                        var table = Progresiv.Utils.createElement("table");
                        this.table.push(table);
                        table.cellSpacing = 0;
                        table.cellPadding = 0;
                        table.calendar = this;
                        Progresiv.Utils.addEvent(table, "mousedown", Progresiv.Calendar.tableMouseDown);
                        div.appendChild(table);
                }

        }

        var tfoot = Progresiv.Utils.createElement("tfoot", table);

        if (this.showsTime) {
                row = Progresiv.Utils.createElement("tr", tfoot);
                row.className = "time";
                //empty area for positioning the time controls under the control month
                var emptyColspan;
                if (this.monthsInRow != 1) {
                        cell = Progresiv.Utils.createElement("td", row);
                        emptyColspan = cell.colSpan = Math.ceil((((this.weekNumbers) ? 8 : 7) * (this.monthsInRow - 1)) / 2);
                        cell.className = "timetext";
                        cell.innerHTML = "&nbsp";
                }

                cell = Progresiv.Utils.createElement("td", row);
                cell.className = "timetext";
                cell.colSpan = this.weekNumbers ? 2 : 1;
                cell.innerHTML = Progresiv.Calendar.i18n("TIME") || "&nbsp;";

                (function() {
                        function makeTimePart(className, init, range_start, range_end) {
                                var table, tbody, tr, tr2, part;
                                if (range_end) {
                                        cell = Progresiv.Utils.createElement("td", row);
                                        cell.colSpan = 2;
                                        cell.className = "parent-" + className;
                                        table = Progresiv.Utils.createElement("table", cell);
                                        table.cellSpacing = table.cellPadding = 0;
                                        if (className == "hour")
                                                table.align = "right";
                                        table.className = "calendar-time-scroller";
                                        tbody = Progresiv.Utils.createElement("tbody", table);
                                        tr    = Progresiv.Utils.createElement("tr", tbody);
                                        tr2   = Progresiv.Utils.createElement("tr", tbody);
                                } else
                                        tr = row;
                                part = Progresiv.Utils.createElement("td", tr);
                                part.className = className;
                                part.appendChild(window.document.createTextNode(init));
                                part.calendar = cal;
                                part.ttip = Progresiv.Calendar.i18n("TIME_PART");
                                part.navtype = 50;
                                part._range = [];
                                if (!range_end)
                                        part._range = range_start;
                                else {
                                        part.rowSpan = 2;
                                        for (var i = range_start; i <= range_end; ++i) {
                                                var txt;
                                                if (i < 10 && range_end >= 10) txt = '0' + i;
                                                else txt = '' + i;
                                                part._range[part._range.length] = txt;
                                        }
                                        var up = Progresiv.Utils.createElement("td", tr);
                                        up.className = "up";
                                        up.navtype = 201;
                                        up.calendar = cal;
                                        up.timePart = part;
                                        if (Progresiv.is_khtml)
                                                up.innerHTML = "&nbsp;";
                                        Progresiv.Calendar._add_evs(up);

                                        var down = Progresiv.Utils.createElement("td", tr2);
                                        down.className = "down";
                                        down.navtype = 202;
                                        down.calendar = cal;
                                        down.timePart = part;
                                        if (Progresiv.is_khtml)
                                                down.innerHTML = "&nbsp;";
                                        Progresiv.Calendar._add_evs(down);
                                }
                                Progresiv.Calendar._add_evs(part);
                                return part;
                        };
                        var hrs = cal.date.getHours();
                        var mins = cal.date.getMinutes();
                        var t12 = !cal.time24;
                        var pm = (hrs > 12);
                        if (t12 && pm) hrs -= 12;
                        var H = makeTimePart("hour", hrs, t12 ? 1 : 0, t12 ? 12 : 23);
                        //calculating of the step for hours
                        H._step = (cal.timeInterval > 30) ? (cal.timeInterval / 60) : 1;
                        cell = Progresiv.Utils.createElement("td", row);
                        cell.innerHTML = ":";
                        cell.className = "colon";
                        var M = makeTimePart("minute", mins, 0, 59);
                        //calculating of the step for minutes
                        M._step = ((cal.timeInterval) && (cal.timeInterval < 60)) ? (cal.timeInterval) : 5; // FIXME: make this part configurable
                        var AP = null;
                        if (t12) {
                                AP = makeTimePart("ampm", pm ? "pm" : "am", ["am", "pm"]);
                                AP.className += " button";
                        } else
                                Progresiv.Utils.createElement("td", row).innerHTML = "&nbsp;";

                        cal.onSetTime = function() {
                                var hrs = this.date.getHours();
                                var mins = this.date.getMinutes();
                                if (this.timeInterval) {
                                        mins += this.timeInterval - ((mins - 1 + this.timeInterval) % this.timeInterval) - 1;
                                }
                                while (mins >= 60) {
                                        mins -= 60;
                                        ++hrs;
                                }
                                if (this.timeInterval > 60) {
                                        var interval = this.timeInterval / 60;
                                        if (hrs % interval != 0) {
                                                hrs += interval - ((hrs - 1 + interval) % interval) - 1;
                                        }
                                        if (hrs >= 24) {hrs -= 24;}
                                }
                        //ALLOWED TIME CHECK
                                // This part of code seeks for the first enabled time value for this date.
                                // It is written for the cases when you change day, month or year and the time value is disabled for the new date.
                                // So if you only allow 8:00 - 17:00 on Mondays and you change the date to a Monday but the time is 7:00 it will
                                // automatically move forward to 8:00.
                                var new_date = new Date(this.date);
                                if (this.getDateStatus && this.getDateStatus(this.date, this.date.getFullYear(), this.date.getMonth(), this.date.getDate(), hrs, mins)) {
                                   hours = hrs;
                                   minutes = mins;
                                   do {
                                     if (this.timeInterval) {
                                                 if (this.timeInterval < 60) {
                                                        minutes += this.timeInterval;
                                                } else {
                                                        hrs += this.timeInterval / 60;
                                                }
                                         } else {
                                                 minutes += 5;
                                         }
                                     if (minutes >=60) {
                                                minutes -= 60;
                                                hours += 1;
                                     }
                                     if (hours >= 24) {hours -= 24;}
                                         new_date.setMinutes(minutes);
                                     new_date.setHours(hours);
                                     if (!this.getDateStatus(new_date, this.date.getFullYear(), this.date.getMonth(), this.date.getDate(), hours, minutes)) {
                                                 hrs = hours;
                                                  mins = minutes;
                                     }
                                   } while ((hrs != hours) || (mins != minutes));
                                }
                        //END OF ALLOWED TIME CHECK
                                var pm = (hrs > 12);
                                if (pm && t12) hrs -= 12;
                                H.firstChild.data = (hrs < 10) ? ("0" + hrs) : hrs;
                                M.firstChild.data = (mins < 10) ? ("0" + mins) : mins;
                                if (t12)
                                   AP.firstChild.data = pm ? "pm" : "am";
                                this.date.setMinutes(mins);
                                this.date.setHours(hrs);
                        };

                        cal.onUpdateTime = function() {
                                var date = this.date;
                                var h = parseInt(H.firstChild.data, 10);
                                if (t12) {
                                        if (/pm/i.test(AP.firstChild.data) && h < 12)
                                                h += 12;
                                        else if (/am/i.test(AP.firstChild.data) && h == 12)
                                                h = 0;
                                }
                                var d = date.getDate();
                                var m = date.getMonth();
                                var y = date.getFullYear();
                                date.setHours(h);
                                date.setMinutes(parseInt(M.firstChild.data, 10));
                                date.setFullYear(y);
                                date.setMonth(m);
                                date.setDate(d);
                                this.dateClicked = false;
                                this.callHandler();
                        };
                })();
                //empty area after the time controls
                if (this.monthsInRow != 1) {
                        cell = Progresiv.Utils.createElement("td", row);
                        cell.colSpan = ((this.weekNumbers) ? 8 : 7) * (this.monthsInRow - 1) - Math.ceil(emptyColspan);
                        cell.className = "timetext";
                        cell.innerHTML = "&nbsp";
                }
        } else {
                this.onSetTime = this.onUpdateTime = function() {};
        }

        row = Progresiv.Utils.createElement("tr", tfoot);
        row.className = "footrow";

        cell = hh(Progresiv.Calendar.i18n("SEL_DATE"), this.weekNumbers ? (8 * this.numberMonths) : (7 * this.numberMonths), 300);
        cell.className = "ttip";
        if (this.isPopup) {
                cell.ttip = Progresiv.Calendar.i18n("DRAG_TO_MOVE");
                cell.style.cursor = "move";
        }
        this.tooltips = cell;

        div = this.monthsCombo = Progresiv.Utils.createElement("div", this.element);
        div.className = "combo";
        for (i = 0; i < 12; ++i) {
                var mn = Progresiv.Utils.createElement("div");
                mn.className = Progresiv.is_ie ? "label-IEfix" : "label";
                mn.month = i;
                mn.appendChild(window.document.createTextNode(Progresiv.Calendar.i18n(i, "smn")));
                div.appendChild(mn);
        }

        div = this.yearsCombo = Progresiv.Utils.createElement("div", this.element);
        div.className = "combo";
        for (i = 12; i > 0; --i) {
                var yr = Progresiv.Utils.createElement("div");
                yr.className = Progresiv.is_ie ? "label-IEfix" : "label";
                yr.appendChild(window.document.createTextNode(""));
                div.appendChild(yr);
        }

        div = this.histCombo = Progresiv.Utils.createElement("div", this.element);
        div.className = "combo history";

        this._init(this.firstDayOfWeek, this.date);
        parent.appendChild(this.element);
};

/**
 * This function handles keypress events that occur while a popup calendar is
 * displayed.  The implementation is quite complicated; this function calls
 * cellClick in order to set the new date as if it was clicked.
 *
 * @param ev [Event] the event object
 * @return false
 */
Progresiv.Calendar._keyEvent = function(ev) {
        if (!window.calendar) {
                return false;
        }
        (Progresiv.is_ie) && (ev = window.event);
        var cal = window.calendar;
        var act = (Progresiv.is_ie || ev.type == "keypress");
        var K = ev.keyCode;
        var date  = new Date(cal.date);
        if (ev.ctrlKey) {
                switch (K) {
                    case 37: // KEY left
                        act && Progresiv.Calendar.cellClick(cal._nav_pm);
                        break;
                    case 38: // KEY up
                        act && Progresiv.Calendar.cellClick(cal._nav_py);
                        break;
                    case 39: // KEY right
                        act && Progresiv.Calendar.cellClick(cal._nav_nm);
                        break;
                    case 40: // KEY down
                        act && Progresiv.Calendar.cellClick(cal._nav_ny);
                        break;
                    default:
                        return false;
                }
        } else switch (K) {
            case 32: // KEY space (now)
                Progresiv.Calendar.cellClick(cal._nav_now);
                break;
            case 27: // KEY esc
                act && cal.callCloseHandler();
                break;
            //Fix for the key navigation
                case 37: // KEY left
                        if (act && !cal.multiple) {
                                date.setTime(date.getTime() - 86400000);
                                cal.setDate(date);
                        }
                        break;
            case 38: // KEY up
                        if (act && !cal.multiple) {
                                date.setTime(date.getTime() - 7 * 86400000);
                                cal.setDate(date);
                        }
                        break;
            case 39: // KEY right
                        if (act && !cal.multiple) {
                                date.setTime(date.getTime() + 86400000);
                                cal.setDate(date);
                        }
                        break;
            case 40: // KEY down
                        if (act && !cal.multiple) {
                                date.setTime(date.getTime() + 7 * 86400000);
                                cal.setDate(date);
                        }
                        break;
            case 13: // KEY enter
                if (act) {
                        cal.callHandler();
                        cal.hide();
                }
                break;
            default:
                return false;
        }
        return Progresiv.Utils.stopEvent(ev);
};

/**
 * (RE)Initializes the calendar to the given date and firstDayOfWeek.
 *
 * This function perform the action of actually displaying the day names and
 * dates in the calendar.  But first, it checks if the passed date fits in the
 * allowed range, configured by the "minYear", "maxYear", "minMonth" and
 * "maxMonth" properties of the Calendar object.
 *
 * It takes care to highlight special days (calling the
 * calendar.getDateStatus() function which can be overridden by external
 * scripts) or to highlight any dates that might be selected (for instance when
 * multiple dates is on, this function will call _initMultipleDates() to
 * highlight selected dates accordingly).
 *
 * This function is highly optimized for speed, therefore the code in it is not
 * trivial and what it does might not seem obvious. :-) So, WARNING, this is
 * voodoo.  If you want to properly understand the code you should analyze it
 * line by line and try to execute it step by step; use the Venkman JS
 * debugger.
 *
 * @param firstDayOfWeek [int] the first day of week, 0 for Sunday, 1 for Monday, etc.
 * @param date [Date] the date to initialize the calendar to
 *
 * @return
 */
Progresiv.Calendar.prototype._init = function (firstDayOfWeek, date) {
        var
                today = new Date(),
                TD = today.getDate(),
                TY = today.getFullYear(),
                TM = today.getMonth();
        //this.table.style.visibility = "hidden";
        var last = false;
        if (this.getDateStatus) {
                var status = this.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate());
                var backupDate = new Date(date);
                while (((status == true) || (status == "disabled")) && (backupDate.getMonth() == date.getMonth())) {
                        date.setTime(date.getTime() + 86400000);
                        var status = this.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate());
                }
                if (backupDate.getMonth() != date.getMonth()) {
                        date = new Date(backupDate);
                        while (((status == true) || (status == "disabled")) && (backupDate.getMonth() == date.getMonth())) {
                                date.setTime(date.getTime() - 86400000);
                                var status = this.getDateStatus(date, date.getFullYear(), date.getMonth(), date.getDate());
                        }
                }
                if (backupDate.getMonth() != date.getMonth()) {
                        last = true;
                        date = new Date(backupDate);
                }
        }
        var year = date.getFullYear();
        var month = date.getMonth();
        var rowsOfMonths = Math.floor(this.numberMonths / this.monthsInRow);
        var minMonth;
        var diffMonth, last_row, before_control;
        if (!this.vertical) {
                diffMonth = (this.controlMonth - 1);
                minMonth = month - diffMonth;
        } else {
                last_row = ((this.numberMonths - 1) % this.monthsInRow) + 1;
                before_control = (this.controlMonth - 1) % this.monthsInRow;
                bottom = (before_control >= (last_row) ? (last_row) : (before_control));
                diffMonth = (before_control) * (rowsOfMonths - 1) + Math.floor((this.controlMonth - 1) / this.monthsInRow) + bottom;
                minMonth = month - diffMonth;
        }
        var minYear = year;
        if (minMonth < 0) {
                minMonth += 12;
                --minYear;
        }
        var maxMonth = minMonth + this.numberMonths - 1;
        //alert(maxMonth + " " + minMonth);
        var maxYear = minYear;
        if (maxMonth > 11) {
                maxMonth -= 12;
                ++maxYear;
        }
        if (minYear <= this.minYear) {
                if (!this._nav_py.disabled) {
                        Progresiv.Calendar._del_evs(this._nav_py);
                        this._nav_py.disabled = true;
                        this._nav_py.className = "button";
                        this._nav_py.innerHTML = "<p>&nbsp</p>";
                }
        } else {
                if (this._nav_py.disabled) {
                        Progresiv.Calendar._add_evs(this._nav_py);
                        this._nav_py.disabled = false;
                        this._nav_py.className = "button nav";
                        this._nav_py.innerHTML = "&#x00ab;";
                }
        }

        if (maxYear >= this.maxYear) {
                if (!this._nav_ny.disabled) {
                        Progresiv.Calendar._del_evs(this._nav_ny);
                        this._nav_ny.disabled = true;
                        this._nav_ny.className = "button";
                        this._nav_ny.innerHTML = "<p>&nbsp</p>";
                }
        } else {
                if (this._nav_ny.disabled) {
                        Progresiv.Calendar._add_evs(this._nav_ny);
                        this._nav_ny.disabled = false;
                        this._nav_ny.className = "button nav";
                        this._nav_ny.innerHTML = "&#x00bb;";
                }
        }

        if ((minYear == this.minYear) && (minMonth <= this.minMonth)) {
                if (!this._nav_pm.disabled) {
                        Progresiv.Calendar._del_evs(this._nav_pm);
                        this._nav_pm.disabled = true;
                        this._nav_pm.className = "button";
                        this._nav_pm.innerHTML = "<p>&nbsp</p>";
                }
        } else {
                if (this._nav_pm.disabled) {
                        Progresiv.Calendar._add_evs(this._nav_pm);
                        this._nav_pm.disabled = false;
                        this._nav_pm.className = "button nav";
                        this._nav_pm.innerHTML = "&#x2039;";
                }
        }

        if ((maxYear == this.maxYear) && (maxMonth >= this.maxMonth)) {
                if (!this._nav_nm.disabled) {
                        Progresiv.Calendar._del_evs(this._nav_nm);
                        this._nav_nm.disabled = true;
                        this._nav_nm.className = "button";
                        this._nav_nm.innerHTML = "<p>&nbsp</p>";
                }
        } else {
                if (this._nav_nm.disabled) {
                        Progresiv.Calendar._add_evs(this._nav_nm);
                        this._nav_nm.disabled = false;
                        this._nav_nm.className = "button nav";
                        this._nav_nm.innerHTML = "&#x203a;";
                }
        }

        //FIX for range checking : spreading of the range on 1 month on the both sides;
        upperMonth = this.maxMonth + 1;
        upperYear = this.maxYear;
        if (upperMonth > 11) {
                upperMonth -= 12;
                ++upperYear;
        }
        bottomMonth = this.minMonth - 1;
        bottomYear = this.minYear;
        if (bottomMonth < 0) {
                bottomMonth += 12;
                --bottomYear;
        }
        maxDate1 = new Date(maxYear, maxMonth, date.getMonthDays(maxMonth), 23, 59, 59, 999);
        maxDate2 = new Date(upperYear, upperMonth, 1, 0, 0, 0, 0);
        minDate1 = new Date(minYear, minMonth, 1, 0, 0, 0, 0);
        minDate2 = new Date(bottomYear, bottomMonth, date.getMonthDays(bottomMonth), 23, 59, 59, 999);
        //alert("date=" + date + " maxDate=" + maxDate1 + " maxRange=" + maxDate2  + " minDate=" + minDate1 + " minRange=" + minDate2 + " maxYear=" + maxYear + "maxMonth=" + maxMonth);
        if (maxDate1.getTime() > maxDate2.getTime()) {
                date.setTime(date.getTime() - (maxDate1.getTime() - maxDate2.getTime()));
        }
        if (minDate1.getTime() < minDate2.getTime()) {
                date.setTime(date.getTime() + (minDate2.getTime() - minDate1.getTime()));
        }
        delete maxDate1; delete maxDate2; delete minDate1; delete minDate2;
        this.firstDayOfWeek = firstDayOfWeek;
        if (!last) this.date = date;
        (this.date = new Date(this.date)).setDateOnly(date);
        year = this.date.getFullYear();
        month = this.date.getMonth();
        var initMonth = date.getMonth();
        var mday = this.date.getDate();
        var no_days = date.getMonthDays();

        // calendar voodoo for computing the first day that would actually be
        // displayed in the calendar, even if it's from the previous month.
        // WARNING: this is magic. ;-)
        var months = new Array();
        if (this.numberMonths % this.monthsInRow > 0) {
                ++rowsOfMonths;
        }
        //creating of the array of date objects for every month
        for (var l = 1; l <= rowsOfMonths; ++l) {
                months[l] = new Array();
                for (var k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                        var tmpDate = new Date(date);
                        if (this.vertical) {
                                var validMonth = date.getMonth() - diffMonth + ((k - 1) * (rowsOfMonths - 1) + (l - 1) + ((last_row < k) ? (last_row) : (k - 1)));
                        } else {
                                var validMonth = date.getMonth() - diffMonth + (l - 1) * this.monthsInRow + k - 1;
                        }
                        if (validMonth < 0) {
                                tmpDate.setFullYear(tmpDate.getFullYear() - 1);
                                validMonth = 12 + validMonth;
                        }
                        if (validMonth > 11) {
                                tmpDate.setFullYear(tmpDate.getFullYear() + 1);
                                validMonth = validMonth - 12;
                        }
                        tmpDate.setDate(1);
                        tmpDate.setMonth(validMonth);
                        var day1 = (tmpDate.getDay() - this.firstDayOfWeek) % 7;
                        if (day1 < 0)
                                day1 += 7;
                        tmpDate.setDate(-day1);
                        tmpDate.setDate(tmpDate.getDate() + 1);
                        months[l][k] = tmpDate;
                }
        }

        var MN = Progresiv.Calendar.i18n(month, "smn");
        var weekend = Progresiv.Calendar.i18n("WEEKEND");
        var dates = this.multiple ? (this.datesCells = {}) : null;
        var DATETXT = this.getDateText;
        //every iteration of the cycle fills one row of months with values;
        for (var l = 1; l <= rowsOfMonths; ++l) {
                var row = this.tbody[l].firstChild;
                for (var i = 7; --i > 0; row = row.nextSibling) {
                        var cell = row.firstChild;
                        var hasdays = false;
                        //this fills one row of days for all the months in the row
                        for (var k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                                date = months[l][k];
                                if (this.weekNumbers) {
                                        cell.className = " day wn";
                                        cell.innerHTML = date.getWeekNumber();
                                        if (k > 1) {
                                                Progresiv.Utils.addClass(cell, "month-left-border");
                                        }
                                        cell = cell.nextSibling;
                                }
                                row.className = "daysrow";
                                var iday;
                                for (j = 7; cell && (iday = date.getDate()) && (j > 0); date.setDate(iday+1), cell = cell.nextSibling, --j) {
                                        var
                                                wday = date.getDay(),
                                                dmonth = date.getMonth(),
                                                dyear = date.getFullYear();
                                        cell.className = " day";
                                        if ((!this.weekNumbers) && (j == 7) && (k != 1)) {
                                                Progresiv.Utils.addClass(cell, "month-left-border");
                                        }
                                        if ((j == 1) && (k != this.monthsInRow)) {
                                                Progresiv.Utils.addClass(cell, "month-right-border");
                                        }
                                        if (this.vertical) {
                                                validMonth = initMonth - diffMonth + ((k - 1) * (rowsOfMonths - 1) + (l - 1) + ((last_row < k) ? (last_row) : (k - 1)));
                                        } else {
                                                validMonth = initMonth - diffMonth + ((l - 1) * this.monthsInRow + k - 1);
                                        }
                                        if (validMonth < 0) {
                                                validMonth = 12 + validMonth;
                                        }
                                        if (validMonth > 11) {
                                                validMonth = validMonth - 12;
                                        }
                                        var current_month = !(cell.otherMonth = !(dmonth == validMonth));
                                        if (!current_month) {
                                                if (this.showsOtherMonths)
                                                        cell.className += " othermonth";
                                                else {
                                                        //cell.className = "emptycell";
                                                        cell.innerHTML = "<p>&nbsp;</p>";
                                                        cell.disabled = true;
                                                        continue;
                                                }
                                        } else
                                                hasdays = true;
                                        cell.disabled = false;
                                        cell.innerHTML = DATETXT ? DATETXT(date, dyear, dmonth, iday) : iday;
                                        dates && (dates[date.print("%Y%m%d")] = cell);
                                        if (this.getDateStatus) {
                                                var status = this.getDateStatus(date, dyear, dmonth, iday);
                                                if (this.getDateToolTip) {
                                                        var toolTip = this.getDateToolTip(date, dyear, dmonth, iday);
                                                        if (toolTip)
                                                                cell.title = toolTip;
                                                }
                                                if (status == true) {
                                                        cell.className += " disabled";
                                                        cell.disabled = true;
                                                } else {
                                                        if (/disabled/i.test(status))
                                                                cell.disabled = true;
                                                        cell.className += " " + status;
                                                }
                                        }
                                        if (!cell.disabled) {
                                                cell.caldate = [dyear, dmonth, iday];
                                                cell.ttip = "_";
                                                if (!this.multiple && current_month && iday == mday && this.hiliteToday && (dmonth == month) && (dyear == year)) {
                                                        cell.className += " selected";
                                                        this.currentDateEl = cell;
                                                }
                                                if (dyear == TY && dmonth == TM && iday == TD) {
                                                        cell.className += " today";
                                                        cell.ttip += Progresiv.Calendar.i18n("PART_TODAY");
                                                }
                                                if ((weekend != null) && (weekend.indexOf(wday.toString()) != -1)) {
                                                        cell.className += cell.otherMonth ? " oweekend" : " weekend";
                                                }
                                        }
                                }
                                if (!(hasdays || this.showsOtherMonths))
                                        row.className = "emptyrow";
                        }
                        if ((i == 1) && (l < rowsOfMonths)) {
                                if (row.className == "emptyrow") {
                                        row = row.previousSibling;
                                }
                                cell = row.firstChild;
                                while (cell != null) {
                                        Progresiv.Utils.addClass(cell, "month-bottom-border");
                                        cell = cell.nextSibling;
                                }
                        }

                }
        }
        //this.title.firstChild.data = Progresiv.Calendar.i18n(month, "mn") + ", " + year;
        //filling of all titles for the months
        if (this.numberMonths == 1) {
                this.title.innerHTML = Progresiv.Calendar.i18n(month, "mn") + ", " + year;
        } else {
                for (var l = 1; l <= rowsOfMonths; ++l) {
                        for (var k = 1; (k <= this.monthsInRow) && ((l - 1) * this.monthsInRow + k <= this.numberMonths); ++k) {
                                if (this.vertical) {
                                        validMonth = month - diffMonth + ((k - 1) * (rowsOfMonths - 1) + (l - 1) + ((last_row < k) ? (last_row) : (k - 1)));
                                } else {
                                        validMonth = month - diffMonth + (l - 1) * this.monthsInRow + k - 1;
                                }
                                validYear = year;
                                if (validMonth < 0) {
                                        --validYear;
                                        validMonth = 12 + validMonth;
                                }
                                if (validMonth > 11) {
                                        ++validYear;
                                        validMonth = validMonth - 12;
                                }
                                this.titles[l][k].innerHTML = Progresiv.Calendar.i18n(validMonth, "mn") + ", " + validYear;
                        }
                }
        }
        this.onSetTime();
        //this.table.style.visibility = "visible";
        this._initMultipleDates();
        this.updateWCH();
        // PROFILE
        // this.showHint("Generated in " + ((new Date()) - today) + " ms");
};

/**
 * If "multiple dates" is selected (the calendar.multiple property) this
 * function will highlight cells that display dates that are selected.  It is
 * only called from the _init() function.
 */
Progresiv.Calendar.prototype._initMultipleDates = function() {
        if (this.multiple) {
                for (var i in this.multiple) {
                        var cell = this.datesCells[i];
                        var d = this.multiple[i];
                        if (!d)
                                continue;
                        if (cell)
                                cell.className += " selected";
                }
        }
};

/**
 * Given a Date object, this function will "toggle" it in the calendar; that
 * is, it will select it if not already selected, or unselect it if was already
 * selected.  The array of dates is updated accordingly and the cell object
 * will be added or removed the appropriate class name ("selected").  Of
 * course, this only takes place if "multiple dates" is selected.
 *
 * @param date [Date] the date to (un)select.
 */
Progresiv.Calendar.prototype._toggleMultipleDate = function(date) {
        if (this.multiple) {
                var ds = date.print("%Y%m%d");
                var cell = this.datesCells[ds];
                if (cell) {
                        var d = this.multiple[ds];
                        if (!d) {
                                Progresiv.Utils.addClass(cell, "selected");
                                this.multiple[ds] = date;
                        } else {
                                Progresiv.Utils.removeClass(cell, "selected");
                                delete this.multiple[ds];
                        }
                }
        }
};

/**
 * Call this in order to install a function handler that returns a tooltip for
 * the given date.  For example:
 *
 * \code
 *   function myHandler(date) {
 *      var str = date.print("%Y/%m/%d");
 *      if (str == "1979/08/03") {
 *         return "Happy birthday Mishoo! :D";
 *      }
 *      return str;
 *   }
 *   calendar.setDateToolTipHandler(myHandler);
 * \endcode
 *
 * The tooltip handler is a "unary" function (receives one argument).  The
 * argument passed is a date object and the function should return the tooltip
 * for that date.
 *
 * @param unaryFunction [function] your tooltip handler, as described above
 */
Progresiv.Calendar.prototype.setDateToolTipHandler = function (unaryFunction) {
        this.getDateToolTip = unaryFunction;
};

/**
 * Moves the calendar to the specified date.  If \em date is not passed, then
 * the "today" date is assumed.  This function does range checking and displays
 * an error in the status bar if the new date is not allowed by the configured
 * calendar range.  Otherwise, it simply calls _init() with the new date.
 *
 * @param date [Date, optional] the date object.
 */
Progresiv.Calendar.prototype.setDate = function (date) {
        // workaround for some bugs in our parseDate code
        if (!date)
                date = new Date();
        if (!date.equalsTo(this.date)) {
                var year = date.getFullYear(), m = date.getMonth();
                if (year == this.minYear && m < this.minMonth)
                        this.showHint("<div class='error'>" + Progresiv.Calendar.i18n("E_RANGE") + " »»»</div>");
                else if (year == this.maxYear && m > this.maxMonth)
                        this.showHint("<div class='error'>««« " + Progresiv.Calendar.i18n("E_RANGE") + "</div>");
                this._init(this.firstDayOfWeek, date);
        }
};

/**
 * Displays a hint in the status bar
 *
 * @param text [string] what to display
 */
Progresiv.Calendar.prototype.showHint = function(text) {
        this.tooltips.innerHTML = text;
};

/**
 * Refreshes the calendar.  Useful if the "disabledHandler" function is
 * dynamic, meaning that the list of disabled date can change at runtime.  Just
 * call this function if you think that the list of disabled dates should
 * change.
 *
 * This function simply calls _init() using the current firstDayOfWeek and the
 * current calendar date.
 */
Progresiv.Calendar.prototype.reinit = function() {
        this._init(this.firstDayOfWeek, this.date);
};

/**
 * "refresh()" isn't a good name for it: this function _destroys_ the calendar
 * object and creates another one with the same parameters.  This comes in
 * handy for the calendar wizard where we need to reconstruct the calendar for
 * virtually any property change.
 */
Progresiv.Calendar.prototype.refresh = function() {
        var p = this.isPopup ? null : this.element.parentNode;
        var x = parseInt(this.element.style.left);
        var y = parseInt(this.element.style.top);
        this.destroy();
        this.dateStr = this.date;
        this.create(p);
        if (this.isPopup)
                this.showAt(x, y);
        else
                this.show();
};

/**
 * Configures the "firstDayOfWeek" parameter of the calendar.
 *
 * @param firstDayOfWeek [int] the new first day of week, 0 for Sunday, 1 for Monday, etc.
 */
Progresiv.Calendar.prototype.setFirstDayOfWeek = function (firstDayOfWeek) {
        if (this.firstDayOfWeek != firstDayOfWeek) {
                this._init(firstDayOfWeek, this.date);
                //displaying the day names for all the rows of the months
                var rowsOfMonths = Math.floor(this.numberMonths / this.monthsInRow);
                if (this.numberMonths % this.monthsInRow > 0) {
                        ++rowsOfMonths;
                }
                for (var l = 1; l <= rowsOfMonths; ++l) {
                        this.firstdayname = this.rowsOfDayNames[l];
                        this._displayWeekdays();
                }
        }
};

/**
 * These functions allow one to install a handler that gets called for each
 * date when a month is displayed in the calendar.  Based on this handler's
 * return value, that date can be disabled or highlighted using a class name
 * returned by the handler.
 *
 * The handler has the following prototype:
 *
 * \code
 *   function dateStatus(date, year, month, day);
 * \endcode
 *
 * While all 4 parameters are passed, the handler can for instance use only the
 * first one.  The year, month and day can all be determined from the first
 * parameter which is a Date object, but because many people will explicitely
 * need the year, month or day, we pass them too to speed things up (since we
 * already know them at the time the handler is called).
 *
 * Here is an example of a not-so-complex handler:
 *
 * \code
 *   function my_DateStatus(date, year, month, day) {
 *      var str = date.print("%Y/%m/%d");
 *      if (str >= '2000/01/01' && str <= '2000/12/31') {
 *         return true; // disable all dates in 2000
 *      }
 *      if (str == "1979/08/03") {
 *         return "birthday";
 *      }
 *      return false;
 *   }
 *   calendar.setDateStatusHandler(my_DateStatus);
 * \endcode
 *
 * The above handler will disable all dates in 2000 (returns true) and
 * highlight "1979/08/03" using the class "birthday".  From this example we can
 * notice that the handler can return a boolean value or a string value.  The
 * "boolean" return type is supported for backwards compatibility (function
 * setDisabledHandler, which is deprecated by setDateStatusHandler).  Here's
 * what the return value means:
 *
 * - \b true: the date will be disabled.
 * - \b false: no action taken (date stays enabled).
 * - "disabled": the date will be disabled.
 * - "other_string": the "other_string" will be added to the cell's class name.
 * - "disabled other_string": the date will be disabled and "disabled other_string"
 *   will be added to cell's class name; this helps one make a date disabled while
 *   still highlighting it in a special way.
 *
 * Note that user defined class names should have an associated CSS part
 * somewhere in the document that specifies how the days will look like;
 * otherwise, no difference will be visible.  For instance, for highlighting
 * "birthday" dates, one should also add:
 *
 * \code
 *   .birthday { color: #f00; }
 * \endcode
 *
 * somewhere in the CSS of the calling document.  (the above will make them
 * red).
 *
 * Disabled dates are not clickable; however, if one overrides the "disable"
 * CSS class, or if the cell also gets an "other_string" class that contains
 * settings that override the "disabled" class, those cells might not look
 * "disabled" but still behave so.
 *
 * \b WARNING: this function gets called 28 to 31 times each time a month is
 * displayed.  This means that if you are doing crazy computations in order to
 * determine the status of a day, things \em will slow down dramatically.  You
 * have been warned.
 *
 * @param unaryFunction [function] handler that decides the status of the passed date
 */
Progresiv.Calendar.prototype.setDateStatusHandler = Progresiv.Calendar.prototype.setDisabledHandler = function (unaryFunction) {
        this.getDateStatus = unaryFunction;
};

/**
 * Configures a range of allowed dates for the calendar.  Currently, this
 * function supports setting a range on a "month granularity".  This means,
 * using it you can't disable part of a month.  Both parameters are numeric and
 * can be float.  The range is "inclusive".
 *
 * This function might seem somehow complicated, but it's designed in a way
 * that keeps backwards compatibility with the calendar v0.9.6.
 *
 * -# when the end points are integers, the full years will be included.  That
 *    is, if you call calendar.setRange(1999, 2005) then only dates between and
 *    including 1999/01/01 and 2005/12/31 will be allowed.
 * -# when the end points are floats, the decimal part specifies the month.
 *    Therefore, calendar.setRange(1999.03, 2005.05) will allow dates between
 *    and including 1999/03/01 (March 1) and 2005/05/31 (May 31).
 *
 * The above statements mean that the following two lines are equivalent:
 *
 * \code
 *   calendar.setDate(1999, 2005);       // or
 *   calendar.setDate(1999.01, 2005.12);
 * \endcode
 *
 * @param A [number] the range start point
 * @param Z [number] the range end point
 */
Progresiv.Calendar.prototype.setRange = function (A, Z) {
        var m,
                a = Math.min(A, Z),
                z = Math.max(A, Z);
        this.minYear = m = Math.floor(a);
        this.minMonth = (m == a) ? 0 : Math.ceil((a-m)*100-1);
        this.maxYear = m = Math.floor(z);
        this.maxMonth = (m == z) ? 11 : Math.ceil((z-m)*100-1);
};

/**
 * This function sets up the cal.multiple property initially when the flat or popup calendar is created.
 * If there are dates to be displayed or added to the first time, this property will be filled with those
 * dates at the beginning.
 *
 * multiple -- [Array] - stores the current dates for future use and appending of additional dates
 */
Progresiv.Calendar.prototype.setMultipleDates = function(multiple) {
        if (!multiple || typeof multiple == "undefined") return;

        this.multiple = {};
        for (var i = multiple.length; --i >= 0;) {
            var d = multiple[i];
            var ds = d.print("%Y%m%d");
            this.multiple[ds] = d;
        }
};

/**
 * Call the calendar's callback function, if defined.  The passed argument
 * is the date object. This is a public function meant to be invoked by the user so that s/he can
 * have more controls on what to do with the dates selected.
 */
Progresiv.Calendar.prototype.submitFlatDates = function()
{
        if (typeof this.params.flatCallback == "function") {
           //Specify the pre-set sorting so that Progresiv.Utils will sort the multiple dates accordingly.
           //Default to "asc" if it does not equal to "asc" or "desc".
           Progresiv.Utils.sortOrder = (this.sortOrder!="asc" && this.sortOrder!="desc" && this.sortOrder!="none") ? "none" : this.sortOrder;

           if ( this.multiple && (Progresiv.Utils.sortOrder != "none") ) {
                        var dateArray = new Array();

                        for (var i in this.multiple) {
                                var currentDate = this.multiple[i];
                                // sometimes the date is not actually selected, that's why we need to check.
                                if (currentDate) {
                                        // and push it in the "dateArray", in case one triggers the calendar again.
                                        dateArray[dateArray.length] = currentDate;
                                }
                                //Now let's sort the dateArray array
                            dateArray.sort(Progresiv.Utils.compareDates);
                        }

                        this.multiple = {};
                        for (var i = 0; i < dateArray.length; i++) {
                                var d = dateArray[i];
                                var ds = d.print("%Y%m%d");
                                this.multiple[ds] = d;
                        }
           } //Else no need to sort the multiple dates.
           this.params.flatCallback(this);
        }
}

/**
 * Call the calendar's "onSelected" handler, if defined.  The passed arguments
 * are the date object and a string with the date formatted by the specifier in
 * calendar.dateFormat.
 */
Progresiv.Calendar.prototype.callHandler = function () {
        if (this.onSelected) {
                this.onSelected(this, this.date.print(this.dateFormat));
        }
};

/**
 * This function updates the calendar history and saves the cookie.  The
 * history is a string containing date and time formatted as "%Y/%m/%d/%H/%M"
 * (that is, all time parts separated by slashes, in a "most significant to
 * least significant order").  Further, such formats are separated by commas,
 * and the current calendar date is added the first, then the cookie saved.
 */
Progresiv.Calendar.prototype.updateHistory = function () {
        var a, i, d, tmp, s, str = "", len = Progresiv.Calendar.prefs.hsize - 1;
        if (Progresiv.Calendar.prefs.history) {
                a = Progresiv.Calendar.prefs.history.split(/,/);
                i = 0;
                while (i < len && (tmp = a[i++])) {
                        s = tmp.split(/\//);
                        d = new Date(parseInt(s[0], 10), parseInt(s[1], 10)-1, parseInt(s[2], 10),
                                     parseInt(s[3], 10), parseInt(s[4], 10));
                        if (!d.dateEqualsTo(this.date))
                                str += "," + tmp;
                }
        }
        Progresiv.Calendar.prefs.history = this.date.print("%Y/%m/%d/%H/%M") + str;
        Progresiv.Calendar.savePrefs();
};

/**
 * Calls the calendar's onClose handler, if present.  Either way, this function
 * calls updateHistory() in order to update the history cookie.
 */
Progresiv.Calendar.prototype.callCloseHandler = function () {
        if (this.dateClicked) {
                this.updateHistory();
        }
        if (this.onClose) {
                this.onClose(this);
        }
        this.hideShowCovered();
};

/** Removes the calendar object from the DOM tree and destroys it. */
Progresiv.Calendar.prototype.destroy = function () {
        this.hide();                // this also removes keyboard events :-\
        Progresiv.Utils.destroy(this.element);
        Progresiv.Utils.destroy(this.WCH);
        Progresiv.Calendar._C = null;
        window.calendar = null;
};

/**
 * Moves the calendar element to a different section in the DOM tree (changes
 * its parent).  This might be useful for flat calendars.
 *
 * @param new_parent [HTMLElement] the new parent for the calendar.
 */
Progresiv.Calendar.prototype.reparent = function (new_parent) {
        var el = this.element;
        el.parentNode.removeChild(el);
        new_parent.appendChild(el);
};

/**
 * This gets called when the user presses a mouse button anywhere in the
 * document, if the calendar is shown.  If the click was outside the open
 * calendar this function closes it and stops the event from propagating.
 *
 * @param ev [Event] the event object.
 * @return false if the event is stopped.
 */
Progresiv.Calendar._checkCalendar = function(ev) {
        if (!window.calendar) {
                return false;
        }
        var el = Progresiv.is_ie ? Progresiv.Utils.getElement(ev) : Progresiv.Utils.getTargetElement(ev);
        for (; el != null && el != calendar.element; el = el.parentNode);
        if (el == null) {
                // calls closeHandler which should hide the calendar.
                window.calendar.callCloseHandler();
                return Progresiv.Utils.stopEvent(ev);
        }
};

/**
 * Updates the calendar "WCH" (windowed controls hider).  A WCH is an
 * "invention" (read: "miserable hack") that works around one of the most
 * common and old bug in Internet Explorer: the SELECT boxes or IFRAMES show on
 * top of any other HTML element.  This function makes sure that the WCH covers
 * correctly the calendar element and another element if passed.
 *
 * @param other_el [HTMLElement, optional] a second element that the WCH should cover.
 */
Progresiv.Calendar.prototype.updateWCH = function(other_el) {
        Progresiv.Utils.setupWCH_el(this.WCH, this.element, other_el);
};

/**
 * Displays a hidden calendar.  It walks quickly through the HTML elements and
 * makes sure that they don't have "hover" or "active" class names that might
 * be there from a previous time the same calendar was displayed.  This
 * function also calls updateWCH() and hideShowCovered() to workaround
 * miserable IE bugs.
 *
 * If the calendar is a popup calendar and doesn't have the "noGrab" property
 * set, this function also adds document event handlers to intercept key events
 * or to close the calendar when one clicks outside it.
 */
Progresiv.Calendar.prototype.show = function () {
        //Fix for Opera's bug : walking through array of tables
        for (l = 0; l < this.table.length; ++l) {
                var rows = this.table[l].getElementsByTagName("tr");
                for (var i = rows.length; i > 0;) {
                        var row = rows[--i];
                        Progresiv.Utils.removeClass(row, "rowhilite");
                        var cells = row.getElementsByTagName("td");
                        for (var j = cells.length; j > 0;) {
                                var cell = cells[--j];
                                Progresiv.Utils.removeClass(cell, "hilite");
                                Progresiv.Utils.removeClass(cell, "active");
                        }
                }
        }
        this.element.style.display = "block";
        this.hidden = false;
        if (this.isPopup) {
                this.updateWCH();
                window.calendar = this;
                if (!this.noGrab) {
                        Progresiv.Utils.addEvent(window.document, "keydown", Progresiv.Calendar._keyEvent);
                        Progresiv.Utils.addEvent(window.document, "keypress", Progresiv.Calendar._keyEvent);
                        Progresiv.Utils.addEvent(window.document, "mousedown", Progresiv.Calendar._checkCalendar);
                }
        }
        this.hideShowCovered();
};

/**
 * Hides the calendar.  Also removes any "hilite" from the class of any TD
 * element.  Unregisters the document event handlers for key presses and
 * mousedown.
 */
Progresiv.Calendar.prototype.hide = function () {
        if (this.isPopup) {
                Progresiv.Utils.removeEvent(window.document, "keydown", Progresiv.Calendar._keyEvent);
                Progresiv.Utils.removeEvent(window.document, "keypress", Progresiv.Calendar._keyEvent);
                Progresiv.Utils.removeEvent(window.document, "mousedown", Progresiv.Calendar._checkCalendar);
        }
        this.element.style.display = "none";
        Progresiv.Utils.hideWCH(this.WCH);
        this.hidden = true;
        this.hideShowCovered();
};

/**
 * Shows the calendar at a given absolute position (beware that, depending on
 * the calendar element style -- position property -- this might be relative to
 * the parent's containing rectangle).
 *
 * @param x [int] the X position
 * @param y [int] the Y position
 */
Progresiv.Calendar.prototype.showAt = function (x, y) {
        var s = this.element.style;
        s.left = x + "px";
        s.top = y + "px";
        this.show();
};

/**
 * This function displays the calendar near a given "anchor" element, according
 * to some rules passed in \em opts.  The \em opts argument is a string
 * containing one or 2 letters.  The first letter decides the vertical
 * alignment, and the second letter decides the horizontal alignment relative
 * to the anchor element.  Following we will describe these options; in parens
 * we will use simple descriptions like "top to bottom" which means that the
 * top margin of the calendar is aligned with the bottom margin of the object.
 *
 * \b Vertical align:
 *
 * - T -- the calendar is completely above the element (bottom to top)
 * - t -- the calendar is above the element but might overlap it (bottom to bottom)
 * - C -- the calendar is vertically centered to the element
 * - b -- the calendar is below the element but might overlap it (top to top)
 * - B -- the calendar is completely below the element (top to bottom)
 *
 * \b Horizontal align (defaults to 'l' if no letter passed):
 *
 * - L -- the calendar is completely to the left of the element (right to left)
 * - l -- the calendar is to the left of the element but might overlap it (right to right)
 * - C -- the calendar is horizontally centered to the element
 * - r -- the calendar is to the right of the element but might overlap it (left to left)
 * - R -- the calendar is completely to the right of the element (left to right)
 *
 * @param el [HTMLElement] the anchor element
 * @param opts [string, optional] the align options, as described above.  Defaults to "Bl" if nothing passed.
 */
Progresiv.Calendar.prototype.showAtElement = function (el, opts) {
        var self = this;
        var p = Progresiv.Utils.getAbsolutePos(el);
        if (!opts || typeof opts != "string") {
                this.showAt(p.x, p.y + el.offsetHeight);
                return true;
        }
        this.element.style.display = "block";
        var w = self.element.offsetWidth;
        var h = self.element.offsetHeight;
        self.element.style.display = "none";
        var valign = opts.substr(0, 1);
        var halign = "l";
        if (opts.length > 1) {
                halign = opts.substr(1, 1);
        }
        // vertical alignment
        
        
        switch (valign) {
            case "T": p.y -= h; break;
            case "B": p.y += el.offsetHeight; break;
            case "C": p.y += (el.offsetHeight - h) / 2; break;
            case "t": p.y += el.offsetHeight - h; break;
            case "b": break; // already there
        }
        // horizontal alignment
        switch (halign) {
            case "L": p.x -= w; break;
            case "R": p.x += el.offsetWidth; break;
            case "C": p.x += (el.offsetWidth - w) / 2; break;
            case "l": p.x += el.offsetWidth - w; break;
            case "r": break; // already there
        }
        p.width = w;
        p.height = h + 40;
        
        self.monthsCombo.style.display = "none";
        Progresiv.Utils.fixBoxPosition(p);
        self.showAt(p.x-40, p.y);
};

/**
 * Customizes the date format that will be reported to the onSelect handler.
 * The format string is described in Date.prototype.print().
 *
 * @param str [string] the date format.
 */
Progresiv.Calendar.prototype.setDateFormat = function (str) {
        this.dateFormat = str;
};

/** Customizes the tooltip date format.  See
 * Progresiv.Calendar.prototype.setDateFormat() for a description of the \em str
 * format.
 *
 * @param str [string] the "tooltip" date format
 */
Progresiv.Calendar.prototype.setTtDateFormat = function (str) {
        this.ttDateFormat = str;
};

/**
 * Tries to identify the date represented in a string.  If successful it also
 * calls this.setDate which moves the calendar to the given date.
 *
 * @param str [string] a date
 * @param fmt [string] the format to try to parse \em str in
 */
Progresiv.Calendar.prototype.parseDate = function (str, fmt) {
        // Konqueror
        if (!str)
                return this.setDate(this.date);
        if (!fmt)
                fmt = this.dateFormat;
        var date = Date.parseDate(str, fmt);
        return this.setDate(date);
};

/**
 * This function hides or shows "windowed controls" accordingly so that the
 * calendar isn't obtured by any such control.  Historically, this function was
 * used for any browser.  It simply walks through all SELECT, IFRAME and APPLET
 * elements present in the DOM, checks if they intersect the calendar and hides
 * them if so or makes them visible otherwise.  This approacy has a number of
 * problems, the most important being that if the end-user's code contains a
 * SELECT which is already hidden and it must stay hidden, it will still be
 * made visible when the calendar closes.  The other obvious problem is that
 * there's an ugly effect generated by elements that suddenly (dis)appear when
 * you drag the calendar around the screen.
 *
 * Currently this function is only used on IE5.0/Windows, browser that leaves
 * no room for a better workaround to this problem.  For IE5.5+/Windows an
 * workaround is possible, albeit amazingly ugly (WCH).  For other browsers
 * such crazy techniques are not anymore useful because the bugs related to
 * windowed controls were fixed.
 */
Progresiv.Calendar.prototype.hideShowCovered = function () {
        if (!Progresiv.is_ie5)
                return;
        var self = this;
        function getVisib(obj){
                var value = obj.style.visibility;
                if (!value) {
                        if (window.document.defaultView && typeof (window.document.defaultView.getComputedStyle) == "function") { // Gecko, W3C
                                if (!Progresiv.is_khtml)
                                        value = window.document.defaultView.
                                                getComputedStyle(obj, "").getPropertyValue("visibility");
                                else
                                        value = '';
                        } else if (obj.currentStyle) { // IE
                                value = obj.currentStyle.visibility;
                        } else
                                value = '';
                }
                return value;
        };

        var tags = ["applet", "iframe", "select"];
        var el = self.element;

        var p = Progresiv.Utils.getAbsolutePos(el);
        var EX1 = p.x;
        var EX2 = el.offsetWidth + EX1;
        var EY1 = p.y;
        var EY2 = el.offsetHeight + EY1;

        for (var k = tags.length; k > 0; ) {
                var ar = window.document.getElementsByTagName(tags[--k]);
                var cc = null;

                for (var i = ar.length; i > 0;) {
                        cc = ar[--i];

                        p = Progresiv.Utils.getAbsolutePos(cc);
                        var CX1 = p.x;
                        var CX2 = cc.offsetWidth + CX1;
                        var CY1 = p.y;
                        var CY2 = cc.offsetHeight + CY1;

                        if (self.hidden || (CX1 > EX2) || (CX2 < EX1) || (CY1 > EY2) || (CY2 < EY1)) {
                                if (!cc.__msh_save_visibility) {
                                        cc.__msh_save_visibility = getVisib(cc);
                                }
                                cc.style.visibility = cc.__msh_save_visibility;
                        } else {
                                if (!cc.__msh_save_visibility) {
                                        cc.__msh_save_visibility = getVisib(cc);
                                }
                                cc.style.visibility = "hidden";
                        }
                }
        }
};

/**
 * This function displays the week day names in the calendar header, according
 * to the current "firstDayOfWeek".
 */
Progresiv.Calendar.prototype._displayWeekdays = function () {
        var fdow = this.firstDayOfWeek;
        var cell = this.firstdayname;
        var weekend = Progresiv.Calendar.i18n("WEEKEND");
        //displaying one row of day names for every month in the row
        for (k = 1; (k <= this.monthsInRow) && (cell); ++k) {
                for (var i = 0; i < 7; ++i) {
                        cell.className = " day name";
                        if ((!this.weekNumbers) && (i == 0) && (k != 1)) {
                                Progresiv.Utils.addClass(cell, "month-left-border");
                        }
                        if ((i == 6) && (k != this.monthsInRow)) {
                                Progresiv.Utils.addClass(cell, "month-right-border");
                        }
                        var realday = (i + fdow) % 7;
                        if (i) {
                                if (Progresiv.Calendar.i18n("DAY_FIRST") != null) {
                                        cell.ttip = Progresiv.Calendar.i18n("DAY_FIRST").replace("%s", Progresiv.Calendar.i18n(realday, "dn"));
                                }
                                cell.navtype = 100;
                                cell.calendar = this;
                                cell.fdow = realday;
                                Progresiv.Calendar._add_evs(cell);
                        }
                        if ((weekend != null) && (weekend.indexOf(realday.toString()) != -1)) {
                                                        Progresiv.Utils.addClass(cell, "weekend");
                        }
                        cell.innerHTML = Progresiv.Calendar.i18n((i + fdow) % 7, "sdn");
                        cell = cell.nextSibling;
                }
                if (this.weekNumbers && cell) {
                        cell = cell.nextSibling;
                }
        }
};


/**
 * Compare two dates in either ascending or descending order. To be used for
 * the multiple dates feature. This function is passed as an argument to the
 * sort routine which calls it to compare dates.
 *
 * @param date1 [date] first date
 * @param date2 [date] second date
 */
Progresiv.Utils.compareDates = function(date1, date2)
{
        if (Progresiv.Calendar.prefs.sortOrder == "asc")
                return date1 - date2;
        else //"desc"ending order
                return date2 - date1;
}

/** \internal Hides all combo boxes that might be displayed. */
Progresiv.Calendar.prototype._hideCombos = function () {
        this.monthsCombo.style.display = "none";
        this.yearsCombo.style.display = "none";
        this.histCombo.style.display = "none";
        this.updateWCH();
};

/** \internal Starts dragging the element. */
Progresiv.Calendar.prototype._dragStart = function (ev) {
        ev || (ev = window.event);
        if (this.dragging) {
                return;
        }
        this.dragging = true;
        var posX = ev.clientX + window.document.body.scrollLeft;
        var posY = ev.clientY + window.document.body.scrollTop;
        var st = this.element.style;
        this.xOffs = posX - parseInt(st.left);
        this.yOffs = posY - parseInt(st.top);
        Progresiv.Utils.addEvent(window.document, "mousemove", Progresiv.Calendar.calDragIt);
        Progresiv.Utils.addEvent(window.document, "mouseover", Progresiv.Calendar.calDragIt);
        Progresiv.Utils.addEvent(window.document, "mouseup", Progresiv.Calendar.calDragEnd);
};

// BEGIN: DATE OBJECT PATCHES

/** \defgroup DateExtras Augmenting the Date object with some utility functions
 * and variables.
 */
//@{

Date._MD = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; /**< Number of days in each month */

Date.SECOND = 1000;                /**< One second has 1000 milliseconds. */
Date.MINUTE = 60 * Date.SECOND;        /**< One minute has 60 seconds. */
Date.HOUR   = 60 * Date.MINUTE;        /**< One hour has 60 minutes. */
Date.DAY    = 24 * Date.HOUR;        /**< One day has 24 hours. */
Date.WEEK   =  7 * Date.DAY;        /**< One week has 7 days. */

/** Returns the number of days in the month.  The \em month parameter is
 * optional; if not passed, the current month of \b this Date object is
 * assumed.
 *
 * @param month [int, optional] the month number, 0 for January.
 */
Date.prototype.getMonthDays = function(month) {
        var year = this.getFullYear();
        if (typeof month == "undefined") {
                month = this.getMonth();
        }
        if (((0 == (year%4)) && ( (0 != (year%100)) || (0 == (year%400)))) && month == 1) {
                return 29;
        } else {
                return Date._MD[month];
        }
};

/** Returns the number of the current day in the current year. */
Date.prototype.getDayOfYear = function() {
        var now = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
        var then = new Date(this.getFullYear(), 0, 0, 0, 0, 0);
        var time = now - then;
        return Math.floor(time / Date.DAY);
};

/** Returns the number of the week in year, as defined in ISO 8601. */
Date.prototype.getWeekNumber = function() {
        var d = new Date(this.getFullYear(), this.getMonth(), this.getDate(), 0, 0, 0);
        var DoW = d.getDay();
        d.setDate(d.getDate() - (DoW + 6) % 7 + 3); // Nearest Thu
        var ms = d.valueOf(); // GMT
        d.setMonth(0);
        d.setDate(4); // Thu in Week 1
        return Math.round((ms - d.valueOf()) / (7 * 864e5)) + 1;
};

/** Checks dates equality.  Checks time too. */
Date.prototype.equalsTo = function(date) {
        return ((this.getFullYear() == date.getFullYear()) &&
                (this.getMonth() == date.getMonth()) &&
                (this.getDate() == date.getDate()) &&
                (this.getHours() == date.getHours()) &&
                (this.getMinutes() == date.getMinutes()));
};

/** Checks dates equality.  Ignores time. */
Date.prototype.dateEqualsTo = function(date) {
        return ((this.getFullYear() == date.getFullYear()) &&
                (this.getMonth() == date.getMonth()) &&
                (this.getDate() == date.getDate()));
};

/** Set only the year, month, date parts (keep existing time) */
Date.prototype.setDateOnly = function(date) {
        var tmp = new Date(date);
        this.setDate(1);
        this.setFullYear(tmp.getFullYear());
        this.setMonth(tmp.getMonth());
        this.setDate(tmp.getDate());
};

/** Prints the date in a string according to the given format.
 *
 * The format (\b str) may contain the following specialties:
 *
 * - %%a - Abbreviated weekday name
 * - %%A - Full weekday name
 * - %%b - Abbreviated month name
 * - %%B - Full month name
 * - %%C - Century number
 * - %%d - The day of the month (00 .. 31)
 * - %%e - The day of the month (0 .. 31)
 * - %%H - Hour (00 .. 23)
 * - %%I - Hour (01 .. 12)
 * - %%j - The day of the year (000 .. 366)
 * - %%k - Hour (0 .. 23)
 * - %%l - Hour (1 .. 12)
 * - %%m - Month (01 .. 12)
 * - %%M - Minute (00 .. 59)
 * - %%n - A newline character
 * - %%p - "PM" or "AM"
 * - %%P - "pm" or "am"
 * - %%S - Second (00 .. 59)
 * - %%s - Number of seconds since Epoch
 * - %%t - A tab character
 * - %%W - The week number (as per ISO 8601)
 * - %%u - The day of week (1 .. 7, 1 = Monday)
 * - %%w - The day of week (0 .. 6, 0 = Sunday)
 * - %%y - Year without the century (00 .. 99)
 * - %%Y - Year including the century (ex. 1979)
 * - %%% - A literal %% character
 *
 * They are almost the same as for the POSIX strftime function.
 *
 * @param str [string] the format to print date in.
 */
Date.prototype.print = function (str) {
        var m = this.getMonth();
        var d = this.getDate();
        var y = this.getFullYear();
        var wn = this.getWeekNumber();
        var w = this.getDay();
        var s = {};
        var hr = this.getHours();
        var pm = (hr >= 12);
        var ir = (pm) ? (hr - 12) : hr;
        var dy = this.getDayOfYear();
        if (ir == 0)
                ir = 12;
        var min = this.getMinutes();
        var sec = this.getSeconds();
        s["%a"] = Progresiv.Calendar.i18n(w, "sdn"); // abbreviated weekday name [FIXME: I18N]
        s["%A"] = Progresiv.Calendar.i18n(w, "dn"); // full weekday name
        s["%b"] = Progresiv.Calendar.i18n(m, "smn"); // abbreviated month name [FIXME: I18N]
        s["%B"] = Progresiv.Calendar.i18n(m, "mn"); // full month name
        // FIXME: %c : preferred date and time representation for the current locale
        s["%C"] = 1 + Math.floor(y / 100); // the century number
        s["%d"] = (d < 10) ? ("0" + d) : d; // the day of the month (range 01 to 31)
        s["%e"] = d; // the day of the month (range 1 to 31)
        // FIXME: %D : american date style: %m/%d/%y
        // FIXME: %E, %F, %G, %g, %h (man strftime)
        s["%H"] = (hr < 10) ? ("0" + hr) : hr; // hour, range 00 to 23 (24h format)
        s["%I"] = (ir < 10) ? ("0" + ir) : ir; // hour, range 01 to 12 (12h format)
        s["%j"] = (dy < 100) ? ((dy < 10) ? ("00" + dy) : ("0" + dy)) : dy; // day of the year (range 001 to 366)
        s["%k"] = hr ? hr :  "0"; // hour, range 0 to 23 (24h format)
        s["%l"] = ir;                // hour, range 1 to 12 (12h format)
        s["%m"] = (m < 9) ? ("0" + (1+m)) : (1+m); // month, range 01 to 12
        s["%M"] = (min < 10) ? ("0" + min) : min; // minute, range 00 to 59
        s["%n"] = "\n";                // a newline character
        s["%p"] = pm ? "PM" : "AM";
        s["%P"] = pm ? "pm" : "am";
        // FIXME: %r : the time in am/pm notation %I:%M:%S %p
        // FIXME: %R : the time in 24-hour notation %H:%M
        s["%s"] = Math.floor(this.getTime() / 1000);
        s["%S"] = (sec < 10) ? ("0" + sec) : sec; // seconds, range 00 to 59
        s["%t"] = "\t";                // a tab character
        // FIXME: %T : the time in 24-hour notation (%H:%M:%S)
        s["%U"] = s["%W"] = s["%V"] = (wn < 10) ? ("0" + wn) : wn;
  s["%u"] = (w == 0) ? 7 : w; // the day of the week (range 1 to 7, 1 = MON)
        s["%w"] = w ? w : "0";                // the day of the week (range 0 to 6, 0 = SUN)
        // FIXME: %x : preferred date representation for the current locale without the time
        // FIXME: %X : preferred time representation for the current locale without the date
        s["%y"] = ('' + y).substr(2, 2); // year without the century (range 00 to 99)
        s["%Y"] = y;                // year with the century
        s["%%"] = "%";                // a literal '%' character

        var re = /%./g;
        if (!Progresiv.is_ie5 && !Progresiv.is_khtml && !Progresiv.is_mac_ie)
                return str.replace(re, function (par) { return s[par] || par; });

        var a = str.match(re);
        for (var i = 0; i < a.length; i++) {
                var tmp = s[a[i]];
                if (tmp) {
                        re = new RegExp(a[i], 'g');
                        str = str.replace(re, tmp);
                }
        }

        return str;
};

/**
 * Parses a date from a string in the specified format.
 *
 * @param str [string] the date as a string
 * @param fmt [string] the format to try to parse the date in
 *
 * @return [Date] a date object containing the parsed date or \b null if for
 * some reason the date couldn't be parsed.
 */
Date.parseDate = function (str, fmt) {
        // Konqueror
        if (!str)
                return new Date();
        var y = 0;
        var m = -1;
        var d = 0;
        var a = str.split(/\W+/);
        var b = fmt.match(/%./g);
        var i = 0, j = 0;
        var hr = 0;
        var min = 0;
        for (i = 0; i < a.length; ++i) {
                if (!a[i])
                        continue;
                switch (b[i]) {
                    case "%d":
                    case "%e":
                        d = parseInt(a[i], 10);
                        break;

                    case "%m":
                        m = parseInt(a[i], 10) - 1;
                        break;

                    case "%Y":
                    case "%y":
                        y = parseInt(a[i], 10);
                        (y < 100) && (y += (y > 29) ? 1900 : 2000);
                        break;

                    case "%b":
                    case "%B":
                        for (j = 0; j < 12; ++j)
                                if (Progresiv.Calendar.i18n(j, "mn").substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) {
                                        m = j;
                                        break;
                                }
                        break;

                    case "%H":
                    case "%I":
                    case "%k":
                    case "%l":
                        hr = parseInt(a[i], 10);
                        break;

                    case "%P":
                    case "%p":
                        if (/pm/i.test(a[i]) && hr < 12)
                                hr += 12;
                        break;

                    case "%M":
                        min = parseInt(a[i], 10);
                        break;
                }
        }
        //Fix for the mm/dd/yy bug
        var validDate = !isNaN(y) && !isNaN(m) && !isNaN(d) && !isNaN(hr) && !isNaN(min);
        if (!validDate) {return null;}
        if (y != 0 && m != -1 && d != 0)
                return new Date(y, m, d, hr, min, 0);
        y = 0; m = -1; d = 0;
        for (i = 0; i < a.length; ++i) {
                if (a[i].search(/[a-zA-Z]+/) != -1) {
                        var t = -1;
                        for (j = 0; j < 12; ++j)
                                if (Progresiv.Calendar.i18n(j, "mn").substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) {
                                        t = j;
                                        break;
                                }
                        if (t != -1) {
                                if (m != -1)
                                        d = m+1;
                                m = t;
                        }
                } else if (parseInt(a[i], 10) <= 12 && m == -1) {
                        m = a[i]-1;
                } else if (parseInt(a[i], 10) > 31 && y == 0) {
                        y = parseInt(a[i], 10);
                        (y < 100) && (y += (y > 29) ? 1900 : 2000);
                } else if (d == 0) {
                        d = a[i];
                }
        }
        if (y == 0) {
                var today = new Date();
                y = today.getFullYear();
        }
        if (m != -1 && d != 0)
                return new Date(y, m, d, hr, min, 0);
        return null;
};

Date.prototype.__msh_oldSetFullYear = Date.prototype.setFullYear; /**< save a reference to the original setFullYear function */

/**
 * This function replaces the original Date.setFullYear() with a "safer"
 * function which makes sure that the month or date aren't modified (unless in
 * the exceptional case where the date is February 29 but the new year doesn't
 * contain it).
 *
 * @param y [int] the new year to move this date to
 */
Date.prototype.setFullYear = function(y) {
        var d = new Date(this);
        d.__msh_oldSetFullYear(y);
        if (d.getMonth() != this.getMonth())
                this.setDate(28);
        this.__msh_oldSetFullYear(y);
};

/**
 * This function compares only years, months and days of two date objects.
 *
 * @return [int] -1 if date1>date2, 1 if date2>date1 or 0 if they are equal
 *
 * @param date1 [Date] first date to compare
 * @param date1 [Date] second date to compare
 */
Date.prototype.compareDatesOnly = function (date1,date2) {
        var year1 = date1.getYear();
        var year2 = date2.getYear();
        var month1 = date1.getMonth();
        var month2 = date2.getMonth();
        var day1 = date1.getDate();
        var day2 = date2.getDate();
        if (year1 > year2) { return -1;        }
        if (year2 > year1) { return 1; } //years are equal
        if (month1 > month2) { return -1; }
        if (month2 > month1) { return 1; } //years and months are equal
        if (day1 > day2) { return -1; }
        if (day2 > day1) { return 1; } //days are equal
        return 0;
}

//@}

// END: DATE OBJECT PATCHES

window.calendar = null;                /**< global object that remembers the calendar */

// initialize the preferences object;
// embed it in a try/catch so we don't have any surprises
try {
        Progresiv.Calendar.loadPrefs();
} catch(e) {};