/*****************************************************************
*  File usage:  views\managers\view_settings_tool.tpl
*				 \sysadmin\main.tpl
*				 \templates\iframe.tpl
*				 \templates\main.tpl
*				 \templates\popup.tpl
* Function usage:   The only function referenced outside of this file is showCalendar() which is used by the date_pick function of views\date.inc
*				Since the javascript is included in the above templates--main, iframe, popup--the javascript is included
*				in any page that uses those templates.
*
*			setActiveStyleSheet():
*				js\calendar.js
*			selected():
*				js\calendar.js
*			closeHandler():
*				js\calendar.js
*			checkCalendar(): 
*				js\calendar.js
*			showCalendar(): 
*				js\calendar.js
*				views\date.inc
*******************************************************************/

/* 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 (sundayFirst, 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.sundayFirst = sundayFirst;
	this.dateStr = dateStr;
	this.closeFunction = '';
};

// ** 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);
	//POP THE CALENDAR ABOVE IF IT WILL POP UP OFF THE BOTTOM OF SCREEN
	//200 IS THE APPROXIMATE SIZE OF THE CALENDAR
	var ypos = 0;
	var xpos = 0;
	if((window.screen.availWidth - window.event.screenX) < 210)
		xpos = window.screen.availWidth - 210;
	else
		xpos = p.x;
	if ((window.screen.availHeight - window.event.screenY) > 200){
		//this.showAt(p.x, p.y + el.offsetHeight);
		ypos = p.y + el.offsetHeight;
	}
	else{
		ypos = p.y - 170;
		//this.showAt(p.x, p.y - 170);
	}
	this.showAt(xpos,ypos);
};

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));
	}
};

//works only on level or plumb lines
Calendar.prototype.checkOverlap = function (rx1, rx2, ry1, ry2, lx1, lx2, ly1, ly2) {
	overlap = false;
	//if the first point in the line is between the two x's and the two y's //overlap
	if ((rx1 <= lx1) && (lx1 <= rx2) && (ry1 <= ly1) && (ly1 <= ry2)) {overlap = true;}
	//if the second point in the line is between the two x's and the two y's //overlap
	if ((rx1 <= lx2) && (lx2 <= rx2) && (ry1 <= ly2) && (ly2 <= ry2)) {overlap = true;}
	//if the lines far left point is less than the rectangles far left point AND the lines far right point is more than the rectangles far right point AND the lines left point is between the top and bottom points of the rectangle //overlap
	if ((lx1 <= rx1) && (lx2 >= rx2) && (ry1 >= ly1) && (ly1 >= ry2)) {overlap = true;}
	//if the lines far top point is less than the rectangles far top point AND the lines far bottom point is more than the rectangles far bottom point AND the lines top point is between the left and right points of the rectangle //overlap
	if ((ly1 <= ry1) && (ly2 >= ry2) && (rx1 >= lx1) && (lx1 >= rx2)) {overlap = true;}
	return overlap;
};

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;

			overlap = false;

			//if line one   intersects with rectangle then overlap
			if(!overlap){overlap = this.checkOverlap(EX1, EX2, EY1, EY2, CX1, CX2, CY1, CY1);}
			//if line two   intersects with rectangle then overlap
			if(!overlap){overlap = this.checkOverlap(EX1, EX2, EY1, EY2, CX2, CX2, CY1, CY2);}
			//if line three intersects with rectangle then overlap
			if(!overlap){overlap = this.checkOverlap(EX1, EX2, EY1, EY2, CX2, CX1, CY2, CY2);}
			//if line four  intersects with rectangle then overlap
			if(!overlap){overlap = this.checkOverlap(EX1, EX2, EY1, EY2, CX1, CX1, CY2, CY1);}

			if (overlap)
			{
				if (cc.style.visibility == "hidden")
				{
					cc.style.visibility = "visible";
				}
				else
				{
					cc.style.visibility = "hidden";
				}
			}
			else	
			{
				if (cc.style.visibility == "hidden")
				{
					cc.style.visibility = "visible";
				}
			}
		}
	}
};


Calendar._DN = new Array
("Sunday",
 "Monday",
 "Tuesday",
 "Wednesday",
 "Thursday",
 "Friday",
 "Saturday",
 "Sunday");
Calendar._MN = new Array
("January",
 "February",
 "March",
 "April",
 "May",
 "June",
 "July",
 "August",
 "September",
 "October",
 "November",
 "December");

Calendar._TT = {};
Calendar._TT["TOGGLE"] = "Toggle first day of week";
Calendar._TT["PREV_YEAR"] = "Prev. year (hold for menu)";
Calendar._TT["PREV_MONTH"] = "Prev. month (hold for menu)";
Calendar._TT["GO_TODAY"] = "Go Today";
Calendar._TT["NEXT_MONTH"] = "Next month (hold for menu)";
Calendar._TT["NEXT_YEAR"] = "Next year (hold for menu)";
Calendar._TT["SEL_DATE"] = "Select date";
Calendar._TT["DRAG_TO_MOVE"] = "Drag to move";
Calendar._TT["PART_TODAY"] = " (today)";
Calendar._TT["MON_FIRST"] = "Display Monday first";
Calendar._TT["SUN_FIRST"] = "Display Sunday first";
Calendar._TT["CLOSE"] = "Close";
Calendar._TT["TODAY"] = "Today";


var calendar = null; // remember the calendar object so that we reuse it and
                     // avoid creation other calendars.

// code from http://www.meyerweb.com -- change the active stylesheet.
function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
  document.getElementById("style").innerHTML = title;
  return false;
}

// This function gets called when the end-user clicks on some date.
function selected(cal, date) {
  cal.sel.value = date; // just update the date in the input field.

  if (this.closeFunction.length > 0)
  {
	  eval(this.closeFunction);
  }
  //if (cal.sel.id == "sel1" || cal.sel.id == "sel3" || cal.sel.id == "sel5" || cal.sel.id == "sel7")
    // if we add this call we close the calendar on single-click.
    // just to exemplify both cases, we are using this only for the 1st
    // and the 3rd field, while 2nd and 4th will still require double-click.
    cal.callCloseHandler();
}

// And this gets called when the end-user clicks on the _selected_ date,
// or clicks on the "Close" button.  It just hides the calendar without
// destroying it.
function closeHandler(cal) {
  cal.hide();                        // hide the calendar

  // don't check mousedown on document anymore (used to be able to hide the
  // calendar when someone clicks outside it, see the showCalendar function).
  Calendar.removeEvent(document, "mousedown", checkCalendar);
}

// 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.
function checkCalendar(ev) {
  var el = Calendar.is_ie ? Calendar.getElement(ev) : Calendar.getTargetElement(ev);
  for (; el != null; el = el.parentNode)
    // FIXME: allow end-user to click some link without closing the
    // calendar.  Good to see real-time stylesheet change :)
    if (el == calendar.element || el.tagName == "A") break;
  if (el == null) {
    // calls closeHandler which should hide the calendar.
    calendar.callCloseHandler();
    Calendar.stopEvent(ev);
  }
}

// This function shows the calendar under the element having the given id.
// It takes care of catching "mousedown" signals on document and hiding the
// calendar if the click was outside.
function showCalendar(id, format, functionName) {
  var el = document.getElementById(id);
  if (calendar != null) {
    // we already have some calendar created
    calendar.hide();                 // so we hide it first.
  } else {
    // first-time call, create the calendar.
    var cal = new Calendar(true, null, selected, closeHandler);
    calendar = cal;                  // remember it in the global var
    cal.setRange(1900, 2070);        // min/max year allowed.
    cal.create();
  }
  calendar.setDateFormat(format);    // set the specified date format
  calendar.parseDate(el.value);      // try to parse the text in field
  calendar.sel = el;                 // inform it what input field we use
  calendar.showAtElement(el);        // show the calendar below it
  calendar.closeFunction = functionName;

  // catch "mousedown" on document
  Calendar.addEvent(document, "mousedown", checkCalendar);
  return false;
}