function getCurrentYear() {
	var year = new Date().getYear();
	if (year < 1900) year += 1900;
	return year;
}

function getCurrentMonth() {
	return new Date().getMonth() + 1;
}

function getCurrentDay() {
	return new Date().getDate();
}

function positionInfo(object) {

	var p_elm = object;

	this.getElementLeft = getElementLeft;
	function getElementLeft() {
		var x = 0;
		var elm;
		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		while (elm != null) {
			x += elm.offsetLeft;
			elm = elm.offsetParent;
		}
		return parseInt(x);
	}

	this.getElementWidth = getElementWidth;
	function getElementWidth() {
		var elm;
		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		return parseInt(elm.offsetWidth);
	}

	this.getElementRight = getElementRight;
	function getElementRight() {
		return getElementLeft(p_elm) + getElementWidth(p_elm);
	}

	this.getElementTop = getElementTop;
	function getElementTop() {
		var y = 0;
		var elm;
		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		while (elm != null) {
			y += elm.offsetTop;
			elm = elm.offsetParent;
		}
		return parseInt(y);
	}

	this.getElementHeight = getElementHeight;
	function getElementHeight() {
		var elm;
		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		return parseInt(elm.offsetHeight);
	}

	this.getElementBottom = getElementBottom;
	function getElementBottom() {
		return getElementTop(p_elm) + getElementHeight(p_elm);
	}
}

function CalendarControl() {

	var calendarId = 'CalendarControl';
	var currentYear = 0;
	var currentMonth = 0;
	var currentDay = 0;

	var selectedYear = 0;
	var selectedMonth = 0;
	var selectedDay = 0;

	var dateField = null;

	function getProperty(p_property) {
		var p_elm = calendarId;
		var elm = null;

		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		if (elm != null) {
			if (elm.style) {
				elm = elm.style;
				if (elm[p_property]) {
					return elm[p_property];
				} else {
					return null;
				}
			} else {
				return null;
			}
		}
	}

	function setElementProperty(p_property, p_value, p_elmId) {
		var p_elm = p_elmId;
		var elm = null;

		if (typeof (p_elm) == "object") {
			elm = p_elm;
		} else {
			elm = document.getElementById(p_elm);
		}
		if ((elm != null) && (elm.style != null)) {
			elm = elm.style;
			elm[p_property] = p_value;
		}
	}

	function setProperty(p_property, p_value) {
		setElementProperty(p_property, p_value, calendarId);
	}

	function getDaysInMonth(year, month) {
		return [31, ((!(year % 4) && ((year % 100) || !(year % 400))) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month - 1];
	}

	function getDayOfWeek(year, month, day) {
		var date = new Date(year, month - 1, day)
		return date.getDay();
	}

	this.clearDate = clearDate;
	function clearDate() {
		dateField.value = '';
		hide();
	}

	this.setDate = setDate;
	function setDate(year, month, day) {
		if (dateField) {
			if (month < 10) { month = "0" + month; }
			if (day < 10) { day = "0" + day; }
			var dateString = day + "." + month + "." + year;
			dateField.value = dateString;
			hide();
		}
		return;
	}

	this.changeMonth = changeMonth;
	function changeMonth(change) {
		currentMonth += change;
		currentDay = 0;
		if (currentMonth > 12) {
			currentMonth = 1;
			currentYear++;
		} else if (currentMonth < 1) {
			currentMonth = 12;
			currentYear--;
		}

		calendar = document.getElementById(calendarId);
		calendar.innerHTML = calendarDrawTable();
	}

	this.changeYear = changeYear;
	function changeYear(change) {
		currentYear += change;
		currentDay = 0;
		calendar = document.getElementById(calendarId);
		calendar.innerHTML = calendarDrawTable();
	}

	function calendarDrawTable() {

		var dayOfMonth = 1;
		var validDay = 0;
		var startDayOfWeek = getDayOfWeek(currentYear, currentMonth, dayOfMonth);
		var daysInMonth = getDaysInMonth(currentYear, currentMonth);
		var css_class = null; //CSS class for each day

		var table = "<table cellspacing='0'>";
		table = table + "<tr class='header'>";
		/*
		table = table + "  <td colspan='2' class='previous'><a href='javascript:changeCalendarControlYear(-1);' title='" + altPrevYear + "'>&lt;&lt;</a>&nbsp;<a href='javascript:changeCalendarControlMonth(-1);' title='" + altPrevMonth + "'>&lt;</a></td>";
		*/
		table = table + "  <td colspan='2' class='previous'><a href='javascript:changeCalendarControlMonth(-1);' title='" + altPrevMonth + "'>&lt;</a></td>";
		table = table + "  <td colspan='3' class='title'>" + aryMonths[currentMonth - 1] + " " + currentYear + "</td>";
		/*
		table = table + "  <td colspan='2' class='next'><a href='javascript:changeCalendarControlMonth(1);' title='" + altNextMonth + "'>&gt;</a>&nbsp;<a href='javascript:changeCalendarControlYear(1);' title='" + altNextYear + "'>&gt;&gt;</a></td>";
		*/
		table = table + "  <td colspan='2' class='next'><a href='javascript:changeCalendarControlMonth(1);' title='" + altNextMonth + "'>&gt;</a></td>";
		table = table + "</tr>";
		table = table + "<tr class='weekday'><th>" + aryDays[0] + "</th><th>" + aryDays[1] + "</th><th>" + aryDays[2] + "</th><th>" + aryDays[3] + "</th><th>" + aryDays[4] + "</th><th>" + aryDays[5] + "</th><th>" + aryDays[6] + "</th></tr>";

		for (var week = 0; week < 6; week++) {
			table = table + "<tr>";
			for (var dayOfWeek = 0; dayOfWeek < 7; dayOfWeek++) {
				if (week == 0 && startDayOfWeek == dayOfWeek) {
					validDay = 1;
				} else if (validDay == 1 && dayOfMonth > daysInMonth) {
					validDay = 0;
				}

				if (validDay) {
					if (dayOfMonth == selectedDay && currentYear == selectedYear && currentMonth == selectedMonth) {
						css_class = 'current';
					} else if (dayOfWeek == 0 || dayOfWeek == 6) {
						css_class = 'weekend';
					} else {
						css_class = 'day';
					}

					table = table + "<td><a class='" + css_class + "' href=\"javascript:setCalendarControlDate(" + currentYear + "," + currentMonth + "," + dayOfMonth + ")\">" + dayOfMonth + "</a></td>";
					dayOfMonth++;
				} else {
					table = table + "<td class='empty'>&nbsp;</td>";
				}
			}
			table = table + "</tr>";
		}

		table = table + "<tr class='footer'><th colspan='2' class='clear'><a href='javascript:clearCalendarControl();' title='" + altClear + "'>0</a></th><th colspan='3' class='today'><a href='javascript:resetCalendarControl();' title='" + altToday + "'>&gt;|&lt;</a></th><th colspan='2' class='close'><a href='javascript:hideCalendarControl();' title='" + altClose + "'>X</a></th></tr>";
		table = table + "</table>";

		return table;
	}

	this.show = show;
	function show(field) {
		can_hide = 0;

		// If the calendar is visible and associated with
		// this field do not do anything.
		if (dateField == field) {
			return;
		} else {
			dateField = field;
		}

		if (dateField) {
			try {
				var dateString = new String(dateField.value);
				//var dateParts = dateString.split("-");
				var dateParts = dateString.split(".");

				selectedDay = parseInt(dateParts[0], 10);
				selectedMonth = parseInt(dateParts[1], 10);
				selectedYear = parseInt(dateParts[2], 10);
			} catch (e) { }
		}

		if (!(selectedYear && selectedMonth && selectedDay)) {
			selectedMonth = getCurrentMonth();
			selectedDay = getCurrentDay();
			selectedYear = getCurrentYear();
		}

		currentMonth = selectedMonth;
		currentDay = selectedDay;
		currentYear = selectedYear;

		if (document.getElementById) {

			calendar = document.getElementById(calendarId);
			calendar.innerHTML = calendarDrawTable(currentYear, currentMonth);

			setProperty('display', 'block');

			var fieldPos = new positionInfo(dateField);
			var calendarPos = new positionInfo(calendarId);

			var x = fieldPos.getElementLeft();
			var y = fieldPos.getElementBottom();

			setProperty('left', x + "px");
			setProperty('top', y + "px");

			if (document.all) {
				setElementProperty('display', 'block', 'CalendarControlIFrame');
				setElementProperty('left', x + "px", 'CalendarControlIFrame');
				setElementProperty('top', y + "px", 'CalendarControlIFrame');
				setElementProperty('width', calendarPos.getElementWidth() + "px", 'CalendarControlIFrame');
				setElementProperty('height', calendarPos.getElementHeight() + "px", 'CalendarControlIFrame');
			}
		}
	}

	this.hide = hide;
	function hide() {
		if (dateField) {
			setProperty('display', 'none');
			setElementProperty('display', 'none', 'CalendarControlIFrame');
			dateField = null;
		}
	}

	this.visible = visible;
	function visible() {
		return dateField
	}

	this.can_hide = can_hide;
	var can_hide = 0;
}

var calendarControl = new CalendarControl();

function showCalendarControl(textField) {
	calendarControl.show(document.getElementsByName(textField).item(0));
}

function clearCalendarControl() {
	calendarControl.clearDate();
}

function resetCalendarControl() {
	setCalendarControlDate(getCurrentYear(), getCurrentMonth(), getCurrentDay())
}

function hideCalendarControl() {
	if (calendarControl.visible()) {
		calendarControl.hide();
	}
}

function setCalendarControlDate(year, month, day) {
	calendarControl.setDate(year, month, day);
}

function changeCalendarControlYear(change) {
	calendarControl.changeYear(change);
}

function changeCalendarControlMonth(change) {
	calendarControl.changeMonth(change);
}

document.write("<iframe id='CalendarControlIFrame' src='javascript:false;' frameBorder='0' scrolling='no'></iframe>");
document.write("<div id='CalendarControl'></div>");