/* Author: Mihai Bazon, September 2002

 * http://students.infoiasi.ro/~mishoo

 *

 * Version: 0.9

 *

 * Feel free to use this script under the terms of the GNU General Public

 * License, as long as you do not remove or alter this notice.

 */



// the Calendar object constructor.

Calendar = function (mondayFirst, dateStr, yourHandler, yourCloseHandler) {

	// member variables

	this.activeDateEl = null;

	this.activeMonEl = null;

	this.activeYearEl = null;

	this.currentDateEl = null;

	this.disabledHandler = null;

	this.timeout = null;

	this.yourHandler = yourHandler || null;

	this.yourCloseHandler = yourCloseHandler || null;

	this.dragging = false;

	this.minYear = 1970;

	this.maxYear = 2050;

	this.dateFormat = "y-mm-dd";

	this.isPopup = true;

	this.mondayFirst = mondayFirst;

	this.dateStr = dateStr;

};



// ** constants



// "static", needed for event handlers.

Calendar._C = null;



Calendar.is_ie = ( (navigator.userAgent.toLowerCase().indexOf("msie") != -1) &&

		   (navigator.userAgent.toLowerCase().indexOf("opera") == -1) );

Calendar._MD = new Array(31,28,31,30,31,30,31,31,30,31,30,31);



// ** public functions (these can be thought as static, since none of them use

// ** "this" and they can be accessed without using an instance of the object).



Calendar.getAbsolutePos = function(el) {

	var r = { x: el.offsetLeft, y: el.offsetTop };

	if (el.offsetParent) {

		var tmp = Calendar.getAbsolutePos(el.offsetParent);

		r.x += tmp.x;

		r.y += tmp.y;

	}

	return r;

};



Calendar._add_evs = function(el) {

	Calendar.addEvent(el, "mouseover", Calendar.dayMouseOver);

	Calendar.addEvent(el, "mousedown", Calendar.dayMouseDown);

	Calendar.addEvent(el, "mouseout", Calendar.dayMouseOut);

	if (Calendar.is_ie) {

		Calendar.addEvent(el, "dblclick", Calendar.dayMouseDblClick);

		el.setAttribute("unselectable", true);

	}

};



Calendar._del_evs = function(el) {

	Calendar.removeEvent(el, "mouseover", Calendar.dayMouseOver);

	Calendar.removeEvent(el, "mousedown", Calendar.dayMouseDown);

	Calendar.removeEvent(el, "mouseout", Calendar.dayMouseOut);

	if (Calendar.is_ie) {

		Calendar.removeEvent(el, "dblclick", Calendar.dayMouseDblClick);

	}

};



Calendar.isRelated = function (el, evt) {

	var related = evt.relatedTarget;

	if (!related) {

		var type = evt.type;

		if (type == "mouseover") {

			related = evt.fromElement;

		} else if (type == "mouseout") {

			related = evt.toElement;

		}

	}

	while (related) {

		if (related == el) {

			return true;

		}

		related = related.parentNode;

	}

	return false;

};



Calendar.getMonthDays = function(year, month) {

	if (((0 == (year%4)) && ( (0 != (year%100)) || (0 == (year%400)))) && month == 1) {

		return 29;

	} else {

		return Calendar._MD[month];

	}

};



Calendar.removeClass = function(el, className) {

	if (!(el && el.className)) {

		return;

	}

	var classes = el.className.split(" ");

	var newClasses = new Array;

	for (i = 0; i < classes.length; ++i) {

		if (classes[i] != className) {

			newClasses[newClasses.length] = classes[i];

		}

	}

	el.className = newClasses.join(" ");

};



Calendar.addClass = function(el, className) {

	el.className += " " + className;

};



Calendar.getElement = function(ev) {

	if (Calendar.is_ie) {

		return window.event.srcElement;

	} else {

		return ev.currentTarget;

	}

};



Calendar.getTargetElement = function(ev) {

	if (Calendar.is_ie) {

		return window.event.srcElement;

	} else {

		return ev.target;

	}

};



Calendar.stopEvent = function(ev) {

	if (Calendar.is_ie) {

		window.event.cancelBubble = true;

		window.event.returnValue = false;

	} else {

		ev.preventDefault();

		ev.stopPropagation();

	}

};



Calendar.addEvent = function(el, evname, func) {

	if (Calendar.is_ie) {

		el.attachEvent("on" + evname, func);

	} else {

		el.addEventListener(evname, func, true);

	}

};



Calendar.removeEvent = function(el, evname, func) {

	if (Calendar.is_ie) {

		el.detachEvent("on" + evname, func);

	} else {

		el.removeEventListener(evname, func, true);

	}

};



Calendar.findMonth = function(el) {

	if (typeof el.month != 'undefined') {

		return el;

	} else if (typeof el.parentNode.month != 'undefined') {

		return el.parentNode;

	}

	return null;

};



Calendar.findYear = function(el) {

	if (typeof el.year != 'undefined') {

		return el;

	} else if (typeof el.parentNode.year != 'undefined') {

		return el.parentNode;

	}

	return null;

};



Calendar.tableMouseUp = function(ev) {

	var cal = Calendar._C;

	if (!cal) {

		return false;

	}

	if (cal.timeout) {

		clearTimeout(cal.timeout);

	}

	var el = cal.activeDateEl;

	if (!el) {

		return false;

	}

	var target = Calendar.getTargetElement(ev);

	Calendar.removeClass(el, "active");

	if (target == el || target.parentNode == el) {

		Calendar.cellClick(el);

	}

	var mon = Calendar.findMonth(target);

	var date = null;

	if (mon) {

		date = new Date(cal.date);

		if (mon.month != date.getMonth()) {

			date.setMonth(mon.month);

			cal.setDate(date);

		}

	} else {

		var year = Calendar.findYear(target);

		if (year) {

			date = new Date(cal.date);

			if (year.year != date.getFullYear()) {

				date.setFullYear(year.year);

				cal.setDate(date);

			}

		}

	}

	Calendar.removeEvent(document, "mouseup", Calendar.tableMouseUp);

	Calendar.removeEvent(document, "mouseover", Calendar.tableMouseOver);

	Calendar.removeEvent(document, "mousemove", Calendar.tableMouseOver);

	cal.hideCombos();

	Calendar.stopEvent(ev);

	Calendar._C = null;

};



Calendar.tableMouseOver = function (ev) {

	var cal = Calendar._C;

	if (!cal) {

		return;

	}

	var el = cal.activeDateEl;

	var target = Calendar.getTargetElement(ev);

	if (target == el || target.parentNode == el) {

		Calendar.addClass(el, "hilite active");

	} else {

		Calendar.removeClass(el, "active");

		Calendar.removeClass(el, "hilite");

	}

	var mon = Calendar.findMonth(target);

	var date = null;

	if (mon) {

		date = new Date(cal.date);

		if (mon.month != date.getMonth()) {

			if (cal.activeMonEl) {

				Calendar.removeClass(cal.activeMonEl, "hilite");

			}

			Calendar.addClass(mon, "hilite");

			cal.activeMonEl = mon;

		}

	} else {

		var year = Calendar.findYear(target);

		if (year) {

			date = new Date(cal.date);

			if (year.year != date.getFullYear()) {

				if (cal.activeYearEl) {

					Calendar.removeClass(cal.activeYearEl, "hilite");

				}

				Calendar.addClass(year, "hilite");

				cal.activeYearEl = year;

			}

		}

	}

	Calendar.stopEvent(ev);

};



Calendar.tableMouseDown = function (ev) {

	if (Calendar.getTargetElement(ev) == Calendar.getElement(ev)) {

		Calendar.stopEvent(ev);

	}

};



Calendar.showMonthsCombo = function () {

	var cal = Calendar._C;

	if (!cal) {

		return false;

	}

	var cal = cal;

	var cd = cal.activeDateEl;

	var mc = cal.monthsCombo;

	if (cal.activeMonEl) {

		Calendar.removeClass(cal.activeMonEl, "hilite");

	}

	var mon = cal.monthsCombo.getElementsByTagName("div")[cal.date.getMonth()];

	Calendar.addClass(mon, "hilite");

	cal.activeMonEl = mon;

	mc.style.left = cd.offsetLeft;

	mc.style.top = cd.offsetTop + cd.offsetHeight;

	mc.style.display = "block";

};



Calendar.showYearsCombo = function (fwd) {

	var cal = Calendar._C;

	if (!cal) {

		return false;

	}

	var cal = cal;

	var cd = cal.activeDateEl;

	var yc = cal.yearsCombo;

	if (cal.activeYearEl) {

		Calendar.removeClass(cal.activeYearEl, "hilite");

	}

	cal.activeYearEl = null;

	var Y = cal.date.getFullYear() + (fwd ? 1 : -1);

	var yr = yc.firstChild;

	var show = false;

	for (var i = 0; i < 12; ++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 ? 2 : -2;

	}

	if (show) {

		yc.style.left = cd.offsetLeft;

		yc.style.top = cd.offsetTop + cd.offsetHeight;

		yc.style.display = "block";

	}

};



Calendar.calDragIt = function (ev) {

	var cal = Calendar._C;

	if (!cal.dragging) {

		return false;

	}

	var posX;

	var posY;

	if (Calendar.is_ie) {

		posY = window.event.clientY + document.body.scrollTop;

		posX = window.event.clientX + document.body.scrollLeft;

	} else {

		posX = ev.pageX;

		posY = ev.pageY;

	}

	cal.hideShowCovered();

	var st = cal.element.style;

	st.left = (posX - cal.xOffs) + "px";

	st.top = (posY - cal.yOffs) + "px";

	Calendar.stopEvent(ev);

};



Calendar.calDragEnd = function (ev) {

	var cal = Calendar._C;

	cal.dragging = false;

	Calendar.removeEvent(document, "mousemove", Calendar.calDragIt);

	Calendar.removeEvent(document, "mouseover", Calendar.stopEvent);

	Calendar.removeEvent(document, "mouseup", Calendar.calDragEnd);

	Calendar.tableMouseUp(ev);

	cal.hideShowCovered();

};



Calendar.dayMouseDown = function(ev) {

	var el = Calendar.getElement(ev);

	var cal = el.calendar;

	cal.activeDateEl = el;

	Calendar._C = cal;

	if (el.navtype != 300) {

		Calendar.addClass(el, "hilite active");

		Calendar.addEvent(document, "mouseover", Calendar.tableMouseOver);

		Calendar.addEvent(document, "mousemove", Calendar.tableMouseOver);

		Calendar.addEvent(document, "mouseup", Calendar.tableMouseUp);

	} else if (cal.isPopup) {

		cal.dragStart(ev);

	}

	Calendar.stopEvent(ev);

	if (el.navtype == -1 || el.navtype == 1) {

		cal.timeout = setTimeout("Calendar.showMonthsCombo()", 250);

	} else if (el.navtype == -2 || el.navtype == 2) {

		cal.timeout = setTimeout((el.navtype > 0) ? "Calendar.showYearsCombo(true)" : "Calendar.showYearsCombo(false)", 250);

	} else {

		cal.timeout = null;

	}

};



Calendar.dayMouseDblClick = function(ev) {

	Calendar.cellClick(Calendar.getElement(ev));

	if (Calendar.is_ie) {

		document.selection.empty();

	}

};



Calendar.dayMouseOver = function(ev) {

	var el = Calendar.getElement(ev);

	if (Calendar.isRelated(el, ev) || Calendar._C) {

		return false;

	}

	if (el.ttip) {

		el.calendar.tooltips.firstChild.data = el.ttip;

	}

	if (el.navtype != 300) {

		Calendar.addClass(el, "hilite");

	}

	Calendar.stopEvent(ev);

};



Calendar.dayMouseOut = function(ev) {

	var el = Calendar.getElement(ev);

	if (Calendar.isRelated(el, ev) || Calendar._C) {

		return false;

	}

	Calendar.removeClass(el, "hilite");

	el.calendar.tooltips.firstChild.data = Calendar._TT["SEL_DATE"];

	Calendar.stopEvent(ev);

};



Calendar.datesEqual = function(a, b) {

	return ((a.getFullYear() == b.getFullYear()) &&

		(a.getMonth() == b.getMonth()) &&

		(a.getDate() == b.getDate()));

};



Calendar.cellClick = function(el) {

	var cal = el.calendar;

	var closing = false;

	var newdate = false;

	var date = null;

	if (typeof el.navtype == 'undefined') {

		Calendar.removeClass(cal.currentDateEl, "selected");

		Calendar.addClass(el, "selected");

		closing = cal.currentDateEl == el;

		if (!closing) {

			cal.currentDateEl = el;

		}

		date = el.caldate;

		cal.date = date;

		newdate = true;

	} else {

		if (el.navtype == 200) {

			Calendar.removeClass(el, "hilite");

			cal.callCloseHandler();

			return;

		}

		date = (el.navtype == 0) ? new Date() : new Date(cal.date);

		var year = date.getFullYear();

		var mon = date.getMonth();

		var setMonth = function (mon) {

			var day = date.getDate();

			var max = Calendar.getMonthDays(year, mon);

			if (day > max) {

				date.setDate(max);

			}

			date.setMonth(mon);

		};

		switch (el.navtype) {

		    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.setMondayFirst(!cal.mondayFirst);

			return;

		}

		if (!Calendar.datesEqual(date, cal.date)) {

			cal.setDate(date);

			newdate = el.navtype == 0;

		}

	}

	if (newdate) {

		cal.callHandler();

	}

	if (closing) {

		Calendar.removeClass(el, "hilite");

		cal.callCloseHandler();

	}

};



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 = document.getElementsByTagName("body")[0];

		this.isPopup = true;

	} else {

		parent = _par;

		this.isPopup = false;

	}

	this.date = this.dateStr ? new Date(this.dateStr) : new Date();



	var table = document.createElement("table");

	this.table = table;

	table.cellSpacing = 0;

	table.cellPadding = 0;

	table.calendar = this;

	Calendar.addEvent(table, "mousedown", Calendar.tableMouseDown);



	var div = document.createElement("div");

	this.element = div;

	div.className = "calendar";

	if (this.isPopup) {

		div.style.position = "absolute";

		div.style.display = "none";

	}

	div.appendChild(table);



	var thead = document.createElement("thead");

	table.appendChild(thead);

	var cell = null;

	var row = null;



	var cal = this;

	var hh = function (text, cs, navtype) {

		cell = document.createElement("td");

		row.appendChild(cell);

		cell.colSpan = cs;

		cell.className = "button";

		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;

	};



	row = document.createElement("tr");

	thead.appendChild(row);

	row.className = "headrow";



	hh("-", 1, 100).ttip = Calendar._TT["TOGGLE"];

	this.title = hh("", this.isPopup ? 5 : 6, 300);

	this.title.className = "title";

	if (this.isPopup) {

		this.title.ttip = Calendar._TT["DRAG_TO_MOVE"];

		this.title.style.cursor = "move";

		hh("X", 1, 200).ttip = Calendar._TT["CLOSE"];

	}



	row = document.createElement("tr");

	thead.appendChild(row);

	row.className = "headrow";



	hh("&#x00ab;", 1, -2).ttip = Calendar._TT["PREV_YEAR"];

	hh("&#x2039;", 1, -1).ttip = Calendar._TT["PREV_MONTH"];

	hh(Calendar._TT["TODAY"], 3, 0).ttip = Calendar._TT["GO_TODAY"];

	hh("&#x203a;", 1, 1).ttip = Calendar._TT["NEXT_MONTH"];

	hh("&#x00bb;", 1, 2).ttip = Calendar._TT["NEXT_YEAR"];



	// day names

	row = document.createElement("tr");

	thead.appendChild(row);

	row.className = "daynames";

	this.daynames = row;

	for (var i = 0; i < 7; ++i) {

		cell = document.createElement("td");

		row.appendChild(cell);

		cell.appendChild(document.createTextNode(""));

		if (!i) {

			cell.navtype = 100;

			cell.calendar = this;

			Calendar._add_evs(cell);

		}

	}

	this.displayWeekdays();



	var tbody = document.createElement("tbody");

	table.appendChild(tbody);



	for (i = 0; i < 6; ++i) {

		row = document.createElement("tr");

		tbody.appendChild(row);

		for (var j = 0; j < 7; ++j) {

			cell = document.createElement("td");

			row.appendChild(cell);

			cell.appendChild(document.createTextNode(""));

			cell.calendar = this;

		}

	}



	var tfoot = document.createElement("tfoot");

	table.appendChild(tfoot);



	row = document.createElement("tr");

	tfoot.appendChild(row);

	row.className = "footrow";



	cell = hh(Calendar._TT["SEL_DATE"], 7, 300);

	cell.className = "ttip";

	if (this.isPopup) {

		cell.ttip = Calendar._TT["DRAG_TO_MOVE"];

		cell.style.cursor = "move";

	}

	this.tooltips = cell;



	div = document.createElement("div");

	this.monthsCombo = div;

	div.className = "combo";

	for (i = 0; i < Calendar._MN.length; ++i) {

		var mn = document.createElement("div");

		mn.className = "label";

		mn.month = i;

		mn.appendChild(document.createTextNode(Calendar._MN[i].substr(0, 3)));

		div.appendChild(mn);

	}

	this.element.appendChild(div);



	div = document.createElement("div");

	this.yearsCombo = div;

	div.className = "combo";

	for (i = 0; i < 12; ++i) {

		var yr = document.createElement("div");

		yr.className = "label";

		yr.appendChild(document.createTextNode(""));

		div.appendChild(yr);

	}

	this.element.appendChild(div);



	this._init(this.mondayFirst, this.date);

	parent.appendChild(this.element);

}



Calendar.prototype._init = function (mondayFirst, date) {

	var today = new Date();

	var year = date.getFullYear();

	if (year < this.minYear) {

		year = this.minYear;

	} else if (year > this.maxYear) {

		year = this.maxYear;

	}

	date.setFullYear(year);

	this.mondayFirst = mondayFirst;

	this.date = new Date(date);

	var month = date.getMonth();

	var mday = date.getDate();

	var no_days = Calendar.getMonthDays(year, month);

	date.setDate(1);

	var wday = date.getDay();

	var MON = mondayFirst ? 1 : 0;

	var SAT = mondayFirst ? 5 : 6;

	var SUN = mondayFirst ? 6 : 0;

	if (mondayFirst) {

		wday = (wday > 0) ? (wday - 1) : 6;

	}

	var iday = 1;

	var row = this.table.getElementsByTagName("tbody")[0].firstChild;

	for (var i = 0; i < 6; ++i) {

		var cell = row.firstChild;

		if (iday > no_days) {

			row.className = "emptyrow"; continue;

		} else {

			row.className = "daysrow";

			for (var j = 0; j < 7; ++j) {

				if ((!i && j < wday) || iday > no_days) {

					cell.className = "emptycell";

				} else {

					cell.firstChild.data = iday;

					cell.className = "day";

					date.setDate(iday);

					if (this.disabledHandler && this.disabledHandler(date)) {

						Calendar.addClass(cell, "disabled");

						Calendar._del_evs(cell);

					} else {

						cell.caldate = new Date(date);

						cell.ttip =

							Calendar._DN[wday + MON].substr(0, 3) +

							", " +

							Calendar._MN[month].substr(0, 3) +

							" " + iday + ", " + year;

						Calendar._add_evs(cell);

						if (iday == mday) {

							Calendar.addClass(cell, "selected");

							this.currentDateEl = cell;

						}

						if (Calendar.datesEqual(date, today)) {

							Calendar.addClass(cell, "today");

							cell.ttip += Calendar._TT["PART_TODAY"];

						}

						if (wday == SAT || wday == SUN) {

							Calendar.addClass(cell, "weekend");

						}

					}

					++wday; ++iday;

					if (wday == 7) {

						wday = 0;

					}

				}

				cell = cell.nextSibling;

			}

		}

		row = row.nextSibling;

	}

	this.title.firstChild.data = Calendar._MN[month] + ", " + year;

};



Calendar.prototype.setDate = function (date) {

	if (!Calendar.datesEqual(date, this.date)) {

		this._init(this.mondayFirst, date);

	}

};



Calendar.prototype.setMondayFirst = function (mondayFirst) {

	this._init(mondayFirst, this.date);

	this.displayWeekdays();

};



Calendar.prototype.displayWeekdays = function () {

	var MON = this.mondayFirst ? 0 : 1;

	var SUN = this.mondayFirst ? 6 : 0;

	var SAT = this.mondayFirst ? 5 : 6;

	var cell = this.daynames.firstChild;

	for (var i = 0; i < 7; ++i) {

		cell.className = "day name";

		if (!i) {

			if (this.mondayFirst) {

				cell.ttip = Calendar._TT["SUN_FIRST"];

			} else {

				cell.ttip = Calendar._TT["MON_FIRST"];

			}

		}

		if (i == SUN || i == SAT) {

			Calendar.addClass(cell, "weekend");

		}

		cell.firstChild.data = Calendar._DN[i + 1 - MON].substr(0,2);

		cell = cell.nextSibling;

	}

};



Calendar.prototype.setDisabledHandler = function (unaryFunction) {

	this.disabledHandler = unaryFunction;

};



Calendar.prototype.setRange = function (a, z) {

	this.minYear = a;

	this.maxYear = z;

};



Calendar.prototype.callHandler = function () {

	if (this.yourHandler) {

		this.yourHandler(this, this.formatDate());

	}

};



Calendar.prototype.callCloseHandler = function () {

	if (this.yourCloseHandler) {

		this.yourCloseHandler(this);

	}

	this.hideShowCovered();

};



Calendar.prototype.destroy = function () {

	var el = this.element.parentNode;

	el.removeChild(this.element);

	Calendar._C = null;

	delete el;

};



Calendar.prototype.reparent = function (new_parent) {

	var el = this.element;

	el.parentNode.removeChild(el);

	new_parent.appendChild(el);

};



Calendar.prototype.show = function () {

	this.element.style.display = "block";

	this.hideShowCovered();

};



Calendar.prototype.hide = function () {

	this.element.style.display = "none";

};



Calendar.prototype.showAt = function (x, y) {

	var s = this.element.style;

	s.left = x + "px";

	s.top = y + "px";

	this.show();

};



Calendar.prototype.showAtElement = function (el) {

	var p = Calendar.getAbsolutePos(el);

	this.showAt(p.x, p.y + el.offsetHeight);

};



Calendar.prototype.hideCombos = function () {

	this.monthsCombo.style.display = "none";

	this.yearsCombo.style.display = "none";

};



Calendar.prototype.dragStart = function (ev) {

	if (this.dragging) {

		return;

	}

	this.dragging = true;

	var posX;

	var posY;

	if (Calendar.is_ie) {

		posY = window.event.clientY + document.body.scrollTop;

		posX = window.event.clientX + document.body.scrollLeft;

	} else {

		posY = ev.clientY + window.scrollY;

		posX = ev.clientX + window.scrollX;

	}

	var st = this.element.style;

	this.xOffs = posX - parseInt(st.left);

	this.yOffs = posY - parseInt(st.top);

	Calendar.addEvent(document, "mousemove", Calendar.calDragIt);

	Calendar.addEvent(document, "mouseover", Calendar.stopEvent);

	Calendar.addEvent(document, "mouseup", Calendar.calDragEnd);

};



Calendar.prototype.setDateFormat = function (str) {

	this.dateFormat = str;

};



Calendar.prototype.formatDate = function () {

	var str = new String(this.dateFormat);

	var m = this.date.getMonth();

	var d = this.date.getDate();

	var y = this.date.getFullYear();

	var w = this.date.getDay();

	var s = new Array;
	
	s['d'] = d;

	s['dd'] = (d < 10) ? ('0' + d) : d;

	s['m'] = 1+m;

	s['mm'] = (m < 9) ? ('0' + (1+m)) : (1+m);

	s['y'] = y;

	s['yy'] = new String(y).substr(2, 2);

	s['D'] = Calendar._DN[w].substr(0, 3);

	s['DD'] = Calendar._DN[w];

	s['M'] = Calendar._MN[m].substr(0, 3);

	s['MM'] = Calendar._MN[m];

	var re = /(.*)(\W|^)(d|dd|m|mm|y|yy|MM|M|DD|D)(\W|$)(.*)/;

	while (re.exec(str) != null) {

		str = RegExp.$1 + RegExp.$2 + s[RegExp.$3] + RegExp.$4 + RegExp.$5;

	}

	return str;

};



Calendar.prototype.parseDate = function (str, fmt) {

	var y = 0;

	var m = -1;

	var d = 0;

	var a = str.split(/\W+/);

	if (!fmt) {

		fmt = this.dateFormat;

	}

	var b = fmt.split(/\W+/);

	var i = 0, j = 0;

	for (i = 0; i < a.length; ++i) {

		if (b[i] == 'D' || b[i] == 'DD') {

			continue;

		}

		if (b[i] == 'd' || b[i] == 'dd') {

			d = a[i];

		}

		if (b[i] == 'm' || b[i] == 'mm') {

			m = a[i]-1;

		}

		if (b[i] == 'y') {

			y = a[i];

		}

		if (b[i] == 'yy') {

			y = parseInt(a[i]) + 1900;

		}

		if (b[i] == 'M' || b[i] == 'MM') {

			for (j = 0; j < 12; ++j) {

				if (Calendar._MN[j].substr(0, a[i].length).toLowerCase() == a[i].toLowerCase()) { m = j; break; }

			}

		}

	}

	if (y != 0 && m != -1 && d != 0) {

		this.setDate(new Date(y, m, d));

		return;

	}

	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 (Calendar._MN[j].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]) <= 12 && m == -1) {

			m = a[i]-1;

		} else if (parseInt(a[i]) > 31 && y == 0) {

			y = a[i];

		} else if (d == 0) {

			d = a[i];

		}

	}

	if (y == 0) {

		var today = new Date();

		y = today.getFullYear();

	}

	if (m != -1 && d != 0) {

		this.setDate(new Date(y, m, d));

	}

};



Calendar.prototype.hideShowCovered = function () {

	var tags = new Array ('applet', 'iframe', 'select');

	var el = this.element;



	var p = Calendar.getAbsolutePos(el);

	var EX1 = p.x;

	var EX2 = el.offsetWidth + EX1;

	var EY1 = p.y;

	var EY2 = el.offsetHeight + EY1;



	for (var k = 0; k < tags.length; k++) {

		var ar = document.getElementsByTagName(tags[k]);

		var cc = null;



		for (var i = 0; i < ar.length; i++) {

			cc = ar[i];



			p = Calendar.getAbsolutePos(cc);

			var CX1 = p.x;

			var CX2 = cc.offsetWidth + CX1;

			var CY1 = p.y;

			var CY2 = cc.offsetHeight + CY1;



			if ((CX1 > EX2) || (CX2 < EX1) || (CY1 > EY2) || (CY2 < EY1)) {

				cc.style.visibility = "visible";

			} else {

				cc.style.visibility = "hidden";

			}

		}

	}

};