///  http://www.totallysmartit.com/
var timeoutDelay = 2000; // milliseconds, change this if you like, set to 0 for the calendar to never auto disappear
var g_startDay = 0; // 0=sunday, 1=monday

// preload images
var imgUp = new Image(8,12);
imgUp.src = '/img/admin/js/calendar/up.gif';
var imgDown = new Image(8,12);
imgDown.src = '/img/admin/js/calendar/down.gif';

// used by timeout auto hide functions
var timeoutId = false;

// the now standard browser sniffer class
function Browser(){
	this.dom = document.getElementById?1:0;
	this.ie4 = (document.all && !this.dom)?1:0;
	this.ns4 = (document.layers && !this.dom)?1:0;
	this.ns6 = (this.dom && !document.all)?1:0;
	this.ie5 = (this.dom && document.all)?1:0;
	this.ok = this.dom || this.ie4 || this.ns4;
	this.platform = navigator.platform;
}
var browser = new Browser();

// dom browsers require this written to the HEAD section

if (browser.dom || browser.ie4){
	document.writeln('<style>');
	document.writeln('#container {');
	document.writeln('position : absolute;');
	document.writeln('left : 100px;');
	document.writeln('top : 100px;');
	document.writeln('width : 124px;');;
	browser.platform=='Win32'?height=140:height=145;
	document.writeln('height : ' + height +'px;');
	document.writeln('clip:rect(0px 124px ' + height + 'px 0px);');
	//document.writeln('overflow : hidden;');
	document.writeln('visibility : hidden;');
	document.writeln('background-color : #ffffff');
	document.writeln('}');
	document.writeln('</style>')
	document.write('<div id="container"');
	if (timeoutDelay) document.write(' onmouseout="calendarTimeout();" onmouseover="if (timeoutId) clearTimeout(timeoutId);"');
	document.write('></div>');
}

var g_Calendar;  // global to hold the calendar reference, set by constructor

function calendarTimeout(){
	if (browser.ie4 || browser.ie5){
		if (window.event.srcElement && window.event.srcElement.name!='month') timeoutId=setTimeout('g_Calendar.hide();',timeoutDelay);
	}
	if (browser.ns6 || browser.ns4){
		timeoutId=setTimeout('g_Calendar.hide();',timeoutDelay);
	}
}

// constructor for calendar class
function Calendar(){
	g_Calendar = this;
	// some constants needed throughout the program
	// this.daysOfWeek = new Array("Su","Mo","Tu","We","Th","Fr","Sa");
	this.daysOfWeek = new Array("Вс","Пн","Вт","Ср","Чт","Пт","Сб");
	// this.months = new Array("January","February","March","April","May","June","July","August","September","October","November","December");
	this.months = new Array("Январь","Февраль","Март","Апрель","Май","Июнь","Июль","Август","Сентябрь","Октябрь","Ноябрь","Декабрь");
	this.daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
	
	if (browser.ns4){
		var tmpLayer = new Layer(127);
		if (timeoutDelay){
			tmpLayer.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
			tmpLayer.onmouseover = function(event) { if (timeoutId) clearTimeout(timeoutId); };
			tmpLayer.onmouseout = function(event) { timeoutId=setTimeout('g_Calendar.hide()',timeoutDelay);};
		}
		tmpLayer.x = 100;
		tmpLayer.y = 100;
		tmpLayer.bgColor = "#ffffff";
	}
	if (browser.dom || browser.ie4){
		var tmpLayer = browser.dom?document.getElementById('container'):document.all.container;
	}
	this.containerLayer = tmpLayer;
	if (browser.ns4 && browser.platform=='Win32') {
		this.containerLayer.clip.height=134;
		this.containerLayer.clip.width=127;
	}
	
}

Calendar.prototype.getFirstDOM = function() {
	var thedate = new Date();
	thedate.setDate(1);
	thedate.setMonth(this.month);
	thedate.setFullYear(this.year);
	return thedate.getDay();
}

Calendar.prototype.getDaysInMonth = function (){
	if (this.month!=1) {
		return this.daysInMonth[this.month]
	} else {
		// is it a leap year
		if (Date.isLeapYear(this.year)) {
			return 29;
		} else {
			return 28;
		}
	}
}

Calendar.prototype.buildString = function(){
	var tmpStr = '<form onSubmit="this.year.blur();return false;"><table width="100%" border="0" cellspacing="0" cellpadding="2" class="calendar"><tr><td valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="1" class="calBgColor">';
	tmpStr += '<tr>';
	tmpStr += '<td width="60%" class="cal" align="left">';
	if (this.hasDropDown) {
		tmpStr += '<select class="month" name="month" onchange="g_Calendar.selectChange();">';
		for (var i=0;i<this.months.length;i++){
			tmpStr += '<option value="' + i + '"'
			if (i == this.month) tmpStr += ' selected';
			tmpStr += '>' + this.months[i] + '</option>';
		}
		tmpStr += '</select>';
	} else {
		tmpStr += '<table border="0" cellspacing="0" cellpadding="0"><tr><td><a href="javascript: g_Calendar.changeMonth(-1);"><img name="calendar" src="/img/admin/js/calendar/down.gif" width="8" height="12" border="0" alt=""></a></td><td class="cal" width="100%" align="center">' + this.months[this.month] + '</td><td class="cal"><a href="javascript: g_Calendar.changeMonth(+1);"><img name="calendar" src="/img/admin/js/calendar/up.gif" width="8" height="12" border="0" alt=""></a></td></tr></table>';
	}
	tmpStr += '</td>';
	/* observation : for some reason if the below event is changed to 'onChange' rather than 'onBlur' it totally crashes IE (4 and 5)!
	*/
	tmpStr += '<td width="40%" align="right" class="cal">';
	
	if (this.hasDropDown) {
		tmpStr += '<input class="year" type="text" size="';
		// get round NS4 win32 lenght of year input problem
		(browser.ns4 && browser.platform=='Win32')?tmpStr += 1:tmpStr += 4;
		tmpStr += '" name="year" maxlength="4" onBlur="g_Calendar.inputChange();" value="' + this.year + '">';
	} else {
		tmpStr += '<table border="0" cellspacing="0" cellpadding="0"><tr><td class="cal"><a href="javascript: g_Calendar.changeYear(-1);"><img name="calendar" src="/img/admin/js/calendar/down.gif" width="8" height="12" border="0" alt=""></a></td><td class="cal" width="100%" align="center">' + this.year + '</td><td class="cal"><a href="javascript: g_Calendar.changeYear(+1);"><img name="calendar" src="/img/admin/js/calendar/up.gif" width="8" height="12" border="0" alt=""></a></td></tr></table>'
	}
	tmpStr += '</td>';
	tmpStr += '</tr>';
	tmpStr += '</table>';
	var iCount = 1;
	var iFirstDOM = (7+this.getFirstDOM()-g_startDay)%7; // to prevent calling it in a loop
	if (iFirstDOM == 0) iFirstDOM = 7;
	var iDaysInMonth = this.getDaysInMonth(); // to prevent calling it in a loop
	
	tmpStr += '<table width="100%" border="0" cellspacing="0" cellpadding="1" class="calBgColor">';
	tmpStr += '<tr>';
	for (var i=1;i<8;i++){
		if (i==8) i = 0;
		tmpStr += '<td align="center" class="calDaysColor">' + this.daysOfWeek[(g_startDay+i)%7] + '</td>';
		if(i==0) break;
	}
	tmpStr += '</tr>';
	var tmpFrom = parseInt('' + this.dateFromYear + this.dateFromMonth + this.dateFromDay,10);
	var tmpTo = parseInt('' + this.dateToYear + this.dateToMonth + this.dateToDay,10);
	var tmpCompare;
	for (var j=1;j<=6;j++){
		tmpStr += '<tr>';
		for (var i=1;i<=7;i++){
			tmpStr += '<td width="16" align="center" '
			if ( (7*(j-1) + i)>=iFirstDOM  && iCount <= iDaysInMonth){
				tmpStr += 'onClick="g_Calendar.clickDay(' + iCount + ');" onmouseover="this.style.background=\'#FFCC00\';" onmouseout="this.style.cursor=\'hand\';this.style.background=\''
				if (iCount==this.day && this.year==this.oYear && this.month==this.oMonth) {
					tmpStr += '#9B9FF2\'" class="calHighlightColor"';
				} else {
					if (i== 7-g_startDay || i == 6-g_startDay) {
						tmpStr += '#FBF6EE\'" class="calWeekend"';
					} else {
						tmpStr += '#FFFFFF\'" class="cal"';
					}
				}
				tmpStr += '>';
				/* could create a date object here and compare that but probably more efficient to convert to a number
				and compare number as numbers are primitives */
				tmpCompare = parseInt('' + this.year + padZero(this.month) + padZero(iCount),10);
				if (tmpCompare >= tmpFrom && tmpCompare <= tmpTo) {
					tmpStr += '<a class="cal" href="javascript: g_Calendar.clickDay(' + iCount + ');">' + iCount + '</a>';
				} else {
					tmpStr += '<span class="no_date">' + iCount + '</span>';
				}
				iCount++;
			} else {
				if  (i == 7-g_startDay || i == 6-g_startDay) {
					tmpStr += 'class="calWeekend"';
				} else {
					tmpStr +='class="cal"';
				}
				tmpStr += '>&nbsp;';
			}
			tmpStr += '</td>'
		}
		tmpStr += '</tr>'
	}
	tmpStr += '</table></td></tr></table></form>'
	return tmpStr;
}

Calendar.prototype.selectChange = function(){
	this.month = browser.ns6?this.containerLayer.ownerDocument.forms[0].month.selectedIndex:this.containerLayer.document.forms[0].month.selectedIndex;
	this.writeString(this.buildString());
}

Calendar.prototype.inputChange = function(){
	var tmp = browser.ns6?this.containerLayer.ownerDocument.forms[0].year:this.containerLayer.document.forms[0].year;
	if (tmp.value >=1900 || tmp.value <=2100){
		this.year = tmp.value;
		this.writeString(this.buildString());
	} else {
		tmp.value = this.year;
	}
}
Calendar.prototype.changeYear = function(incr){
	(incr==1)?this.year++:this.year--;
	this.writeString(this.buildString());
}
Calendar.prototype.changeMonth = function(incr){
	if (this.month==11 && incr==1){
		this.month = 0;
		this.year++;
	} else {
		if (this.month==0 && incr==-1){
			this.month = 11;
			this.year--;
		} else {
			(incr==1)?this.month++:this.month--;
		}
	}
	this.writeString(this.buildString());
}

Calendar.prototype.clickDay = function(day){
	var tmp = eval('document.' + this.target);
	tmp.value = this.formatDateAsString(day,this.month,this.year);
	if (browser.ns4) this.containerLayer.hidden=true;
	if (browser.dom || browser.ie4){
		this.containerLayer.style.visibility='hidden';
	}
}
Calendar.prototype.formatDateAsString = function(day, month, year){
	var delim = eval('/\\' + this.dateDelim + '/g'); // '
	switch (this.dateFormat.replace(delim,"")){
		case 'ddmmmyyyy': return padZero(day) + this.dateDelim + this.months[month].substr(0,3) + this.dateDelim + year;
		case 'ddmmyyyy': return padZero(day) + this.dateDelim + padZero(month+1) + this.dateDelim + year;
		case 'mmddyyyy': return padZero((month+1)) + this.dateDelim + padZero(day) + this.dateDelim + year;
		case 'yyyymmdd': return year + this.dateDelim + padZero(month+1) + this.dateDelim + padZero(day);
		default: alert('unsupported date format');
	}
}



Calendar.prototype.writeString = function(str){
	if (browser.ns4){
		this.containerLayer.document.open();
		this.containerLayer.document.write(str);
		this.containerLayer.document.close();
	}
	if (browser.dom || browser.ie4){
		this.containerLayer.innerHTML = str;
	}
}

Calendar.prototype.show = function(event, target, bHasDropDown, dateFormat, dateFrom, dateTo, startYear, formName){
	// calendar can restrict choices between 2 dates, if however no restrictions
	// are made, let them choose any date between 1900 and 3000
	this.startYear = startYear;
	this.dateFrom = dateFrom || new Date(1900,0,1);
	this.dateFromDay = padZero(this.dateFrom.getDate());
	this.dateFromMonth = padZero(this.dateFrom.getMonth());
	this.dateFromYear = this.dateFrom.getFullYear();
	this.dateTo = dateTo || new Date(3000,0,1);
	this.dateToDay = padZero(this.dateTo.getDate());
	this.dateToMonth = padZero(this.dateTo.getMonth());
	this.dateToYear = this.dateTo.getFullYear();
	this.hasDropDown = bHasDropDown;
	this.dateFormat = dateFormat || 'dd-mmm-yyyy';
	switch (this.dateFormat){
		case 'dd-mmm-yyyy':
		case 'dd-mm-yyyy':
		case 'yyyy-mm-dd':
		this.dateDelim = '-';
		break;
		case 'dd/mm/yyyy':
		case 'mm/dd/yyyy':
		case 'dd/mmm/yyyy':
		this.dateDelim = '/';
		break;
	}
	
	if (browser.ns4) {
		if (!this.containerLayer.hidden) {
			this.containerLayer.hidden=true;
			return;
		}
	}
	if (browser.dom || browser.ie4){
		if (this.containerLayer.style.visibility=='visible') {
			this.containerLayer.style.visibility='hidden';
			return;
		}
	}
	
	if (browser.ie5 || browser.ie4){
		var event = window.event;
	}
	if (browser.ns4){
		this.containerLayer.x = event.x+10;
		this.containerLayer.y = event.y-5;
	}
	if (browser.ie5 || browser.ie4){
		var obj = event.srcElement;
		x = 0;
		while (obj.offsetParent != null) {
			x += obj.offsetLeft;
			obj = obj.offsetParent;
		}
		x += obj.offsetLeft;
		y = 0;
		var obj = event.srcElement;
		while (obj.offsetParent != null) {
			y += obj.offsetTop;
			obj = obj.offsetParent;
		}
		y += obj.offsetTop;
		
		this.containerLayer.style.left = x+35;
		if (event.y>0)this.containerLayer.style.top = y;
	}
	if (browser.ns6){
		this.containerLayer.style.left = event.pageX+10;
		this.containerLayer.style.top = event.pageY-5;
	}
	this.target = target;
	var tmp = eval('document.' + this.target);
	if (tmp && tmp.value && tmp.value.split(this.dateDelim).length==3 && tmp.value.indexOf('d')==-1){
		var atmp = tmp.value.split(this.dateDelim)
		switch (this.dateFormat){
			case 'dd-mmm-yyyy':
			case 'dd/mmm/yyyy':
			for (var i=0;i<this.months.length;i++){
				if (atmp[1].toLowerCase()==this.months[i].substr(0,3).toLowerCase()){
					this.month = this.oMonth = i;
					break;
				}
			}
			this.day = parseInt(atmp[0],10);
			this.year = this.oYear = parseInt(atmp[2],10);
			break;
			case 'dd/mm/yyyy':
			case 'dd-mm-yyyy':
			this.month = this.oMonth = parseInt(atmp[1]-1,10);
			this.day = parseInt(atmp[0],10);
			this.year = this.oYear = parseInt(atmp[2],10);
			break;
			case 'mm/dd/yyyy':
			case 'mm-dd-yyyy':
			this.month = this.oMonth = parseInt(atmp[0]-1,10);
			this.day = parseInt(atmp[1],10);
			this.year = this.oYear = parseInt(atmp[2],10);
			break;
			case 'yyyy-mm-dd':
			this.month = this.oMonth = parseInt(atmp[1]-1,10);
			this.day = parseInt(atmp[2],10);
			this.year = this.oYear = parseInt(atmp[0],10);
			break;
		}
	} else { // no date set, default to today
		var theDate = new Date();
		this.year = this.oYear = theDate.getFullYear();
		this.month = this.oMonth = theDate.getMonth();
		this.day = this.oDay = theDate.getDate();
	}
	this.writeString(this.buildString());
	
	// and then show it!
	if (browser.ns4) {
		this.containerLayer.hidden=false;
	}
	if (browser.dom || browser.ie4){
		this.containerLayer.style.visibility='visible';
	}
}

Calendar.prototype.hide = function(){
	if (browser.ns4) this.containerLayer.hidden = true;
	if (browser.dom || browser.ie4){
		this.containerLayer.style.visibility='hidden';
	}
}

function handleDocumentClick(e){
	/**
	* Проверяем, загружен ли слой с календарем, т.к. если страница еще не загружена,
	* то скрипт Выдаст ошибку
	*/
	try {
		if (
			g_Calendar.containerLayer == undefined
			|| g_Calendar.containerLayer == null
			|| g_Calendar.containerLayer == ''
		) {
			return void(0);
		}
	} catch (err) {
		return void(0);
	}
	
	if (browser.ie4 || browser.ie5) e = window.event;
	
	if (browser.ns6){
		var bTest = (e.pageX > parseInt(g_Calendar.containerLayer.style.left,10) && e.pageX <  (parseInt(g_Calendar.containerLayer.style.left,10)+125) && e.pageY < (parseInt(g_Calendar.containerLayer.style.top,10)+125) && e.pageY > parseInt(g_Calendar.containerLayer.style.top,10));
		if (e.target.name!='imgCalendar' && e.target.name!='month'  && e.target.name!='year' && e.target.name!='calendar' && !bTest){
			g_Calendar.hide();
		}
	}
	if (browser.ie4 || browser.ie5){
		// extra test to see if user clicked inside the calendar but not on a valid date, we don't want it to disappear in this case
		var bTest = (e.x > parseInt(g_Calendar.containerLayer.style.left,10) && e.x <  (parseInt(g_Calendar.containerLayer.style.left,10)+125) && e.y < (parseInt(g_Calendar.containerLayer.style.top,10)+125) && e.y > parseInt(g_Calendar.containerLayer.style.top,10));
		if (e.srcElement.name!='imgCalendar' && e.srcElement.name!='month' && e.srcElement.name!='year' && !bTest & typeof(e.srcElement)!='object'){
			g_Calendar.hide();
		}
	}
	if (browser.ns4) g_Calendar.hide();
}

// utility function
function padZero(num) {
	return ((num <= 9) ? ("0" + num) : num);
}
// Finally licked extending  native date object;
Date.isLeapYear = function(year){ if (year%4==0 && ((year%100!=0) || (year%400==0))) return true; else return false; }
Date.daysInYear = function(year){ if (Date.isLeapYear(year)) return 366; else return 365;}
var DAY = 1000*60*60*24;
Date.prototype.addDays = function(num){
	return new Date((num*DAY)+this.valueOf());
}

// events capturing, careful you don't override this by setting something in the onload event of
// the body tag
window.onload = function g_Load() {
	new Calendar(new Date());
	if (browser.ns4){
		if (typeof document.NSfix == 'undefined'){
			document.NSfix = new Object();
			document.NSfix.initWidth=window.innerWidth;
			document.NSfix.initHeight=window.innerHeight;
		}
	}
}
if (browser.ns4) window.onresize = function(){
	if (document.NSfix.initWidth!=window.innerWidth || document.NSfix.initHeight!=window.innerHeight) window.location.reload(false);
} // ns4 resize bug workaround
window.document.onclick=handleDocumentClick;