function Calendar(oDate, oTrgt, WDaysP, aMonthsP, onDataClick, PHPDate) 
{
	var  oContainer = oTrgt;
	var oCurrentDate = PHPDate;
	//var oCurrentDate = (!oDate) ? new Date() : oDate;
	var oRequestDate = oDate; //(!oDate) ? new Date() : oDate;
	var oPrevMonthDate = new Date((!oRequestDate) ? new Date() : oRequestDate);
		oPrevMonthDate.setDate(1); 
		oPrevMonthDate.setMonth(((!oRequestDate) ? new Date() : oRequestDate).getMonth()-1);
	var prevMonthDaysCount = Calendar.prototype.getLastDay(oPrevMonthDate);
	var emptyDays = Calendar.prototype.getEmptyWDays((!oRequestDate) ? new Date() : oRequestDate);
	var prevMonthDayStart = (prevMonthDaysCount-emptyDays) + 1;
	var currentMonthDaysCount = Calendar.prototype.getLastDay((!oRequestDate) ? new Date() : oRequestDate);

	Calendar.prototype.currentDate = oRequestDate;

	Calendar.prototype.onDataClick = onDataClick;
	
	if(!WDaysP)
		var aWeekDays = new Array("Пн", "Вт", "Ср", "Чт", "Пт", "Сб", "Вс");
	else
		var aWeekDays = WDaysP;
		
	if(!aMonthsP)
		var aMonths = new Array("Январь", "Февраль", "Март", "Апрель", "Май", "Июнь", "Июль", "Август", "Сентябрь", "Октябрь", "Ноябрь", "Декабрь");
	else
		var aMonths = aMonthsP;
	
	var oMainTable = document.createElement('TABLE');
		oMainTable.id = 'oCalendarTable';
		oMainTable.cellPadding = 0;
		oMainTable.cellSpacing = 1;
		oMainTable.className = 'Calendar_MainTable';
	var oMainRow = oMainTable.insertRow(oMainTable.rows.length);

	var oMainCell = oMainRow.insertCell(oMainRow.cells.length);
		oMainCell.style.width = '100px';
		oMainCell.style.textAlign = 'center';
		oMainCell.style.font = '11px Tahoma, Helvetica, sans-serif';
		
		var oMonthYearTable = document.createElement('TABLE');
			oMonthYearTable.id = 'oCalendarMonthYearTable';
			oMonthYearTable.cellPadding = 0;
			oMonthYearTable.cellSpacing = 1;
			oMonthYearTable.border = 0;
			oMonthYearTable.width="100%";
			
		oMainCell.appendChild(oMonthYearTable);
			
		var oMonthYearTableRow = oMonthYearTable.insertRow(oMonthYearTable.rows.length);
		
		var oMonthCell = oMonthYearTableRow.insertCell(oMonthYearTableRow.cells.length);
		oMonthCell.width="60%"
		
		var oSelectMonth = document.createElement("SELECT");
		oSelectMonth.className = "oCalendar_month_selector"
		oSelectMonth.style.width="100%";
		oMonthCell.appendChild(oSelectMonth);
		for(var i=0; i<aMonths.length;i++)
		{
			var oMonth = document.createElement("OPTION");
			oSelectMonth.appendChild(oMonth);
			oMonth.value = i;
			oMonth.name = "M" + i;
			oMonth.innerHTML = aMonths[i];
			if( ((!oRequestDate)?new Date():oRequestDate).getMonth() == i )
				oMonth.selected = true;
		}
		oSelectMonth.selectedIndex = ( (!oRequestDate)?new Date():oRequestDate ).getMonth();
		
		oSelectMonth.onchange = function() {
			var oCurrentDate = new Date((!Calendar.prototype.currentDate)?new Date():Calendar.prototype.currentDate);
			var oNewDate = new Date(oCurrentDate);
			vall = this.value;
			if(vall < 0)
				vall = oCurrentDate.getMonth();
			
			oNewDate.setMonth(vall);
			Calendar(oNewDate,oTrgt,null,null,Calendar.prototype.onDataClick, PHPDate);  
		}
		
		var oYearCell = oMonthYearTableRow.insertCell(oMonthYearTableRow.cells.length);
		oYearCell.width="40%"
		
		var oSelectYear = document.createElement("SELECT");
		oSelectYear.className = "oCalendar_year_selector"
		oSelectYear.style.width="100%";
		oYearCell.appendChild(oSelectYear);
		for(var i=1999; i<2099;i++)
		{
			var oYear = document.createElement("OPTION");
			oSelectYear.appendChild(oYear);
			oYear.value = i;
			oYear.name = "Y" + i;
			oYear.innerHTML = i;
			if( ((!oRequestDate)?new Date():oRequestDate ).getFullYear() == i)
				oYear.selected = true;
		}
		oSelectYear.selectedIndex = ( (!oRequestDate)?new Date():oRequestDate ).getFullYear() - 1999;
		
		oSelectYear.onchange = function() {
			var oCurrentDate = new Date((!Calendar.prototype.currentDate)?new Date():Calendar.prototype.currentDate);
			var oNewDate = new Date(oCurrentDate);
			vall = this.value
			if(vall == 0)
				vall = oCurrentDate.getFullYear();
			oNewDate.setFullYear(vall);
			Calendar(oNewDate,oTrgt,null,null,Calendar.prototype.onDataClick, PHPDate);  
		}
		
	var oMainRow = oMainTable.insertRow(oMainTable.rows.length);
	var oMainCell = oMainRow.insertCell(oMainRow.cells.length);
		oMainCell.colSpan = 3;
					
	var oNewTable = document.createElement('TABLE');
	oNewTable.cellPadding = 0;
	oNewTable.cellSpacing = 0;
	oNewTable.className = 'Calendar_Table';
	
	myNewRow = oNewTable.insertRow(oNewTable.rows.length);
	for (i=0; i<7; i++)
	{
		myNewCell = myNewRow.insertCell(myNewRow.cells.length);
		myNewCell.className = 'Calendar_days_wdays';
		myNewCell.innerHTML = aWeekDays[i];
	}

	myNewRow = oNewTable.insertRow(oNewTable.rows.length);
	for (var i=0; i<emptyDays; i++) 
	{
		myNewCell = myNewRow.insertCell(myNewRow.cells.length);
		myNewCell.className = 'Calendar_days_out';
		myNewCell.innerHTML = prevMonthDayStart;
		prevMonthDayStart++;
		myNewCell.onmousedown = function() 
		{
			//alert("Нажали серый день! Причем из начала таблицы");
			//var oCurrentDate = (!Calendar.prototype.currentDate)?new Date():new Date(Calendar.prototype.currentDate);
			//var oNewDate = new Date(oCurrentDate);
			//oNewDate.setMonth(oCurrentDate.getMonth()-1);
			//oNewDate.setDate(parseInt(this.innerHTML));
			//Calendar(oNewDate,oTrgt,null,null,Calendar.prototype.onDataClick); 
		}
	}
	
	// Anoaaeyai aie oaeouaai ianyoa
	for (var i=1; i<=currentMonthDaysCount; i++)
	{
		if (!(myNewRow.cells.length % 7)) 
		{
			myNewRow = oNewTable.insertRow(oNewTable.rows.length);
		}
		
		myNewCell = myNewRow.insertCell(myNewRow.cells.length);
		
		if(!oRequestDate)
			myNewCell.className = 'Calendar_days_all';
		else
			myNewCell.className = (i == ((!oRequestDate)?new Date():oRequestDate).getDate()) ? 'Calendar_days_currday' : 'Calendar_days_all';
		
		if (i == oCurrentDate.getDate() && ((!oRequestDate)?new Date():oRequestDate).getMonth() == oCurrentDate.getMonth() && ((!oRequestDate)?new Date():oRequestDate).getFullYear() == oCurrentDate.getFullYear())  {
			myNewCell.style.border = '1px solid red';
		}
		myNewCell.innerHTML = i;
		myNewCell.onmousedown = function() 
		{
			var oCurrentDate = (!Calendar.prototype.currentDate)?new Date():new Date(Calendar.prototype.currentDate);
			var oNewDate = new Date(oCurrentDate);
			oNewDate.setDate(parseInt(this.innerHTML));
			if(Calendar.prototype.onDataClick)
				Calendar.prototype.onDataClick(oNewDate);
			Calendar(oNewDate,oTrgt,null,null,Calendar.prototype.onDataClick, PHPDate);
		}
		myNewCell.onmouseover = function()
		{
			if(this.className == 'Calendar_days_all')
			{
				this.className = 'Calendar_days_all_mouseover';
			}
		}
		myNewCell.onmouseout = function()
		{
			if(this.className == 'Calendar_days_all_mouseover')
			{
				this.className = 'Calendar_days_all';
			}
		}
	}

	// Anoaaeyai aie neaao?uaai ianyoa
	var nextMonthDaysCount = (7 - myNewRow.childNodes.length);
	for (var i=1; i<=nextMonthDaysCount; i++)
	{
		myNewCell = myNewRow.insertCell(myNewRow.cells.length);
		myNewCell.className = 'Calendar_days_out';
		myNewCell.innerHTML = i;
		myNewCell.onmousedown = function() 
		{
			//alert("Нажали серый день! Причем из конца таблицы");
			//var oCurrentDate = (!Calendar.prototype.currentDate)?new Date():new Date(Calendar.prototype.currentDate);
			//var oNewDate = new Date(oCurrentDate);
			//oNewDate.setMonth(oCurrentDate.getMonth()+1);
			//oNewDate.setDate(parseInt(this.innerHTML));
			//Calendar(oNewDate,oTrgt,null,null,Calendar.prototype.onDataClick);
		}

	}
	
	
	oMainCell.appendChild(oNewTable);
	

	// Anoaaeyai eaeaiaa?u a eiioaeia?
    if (oContainer.childNodes.length > 0) {
		oContainer.removeChild(oContainer.childNodes[0]);
	}
	
	oContainer.appendChild(oMainTable);
	
}


Calendar.prototype.getLastDay = function(oDate) 
{
	var myDate = new Date(oDate.getYear(), oDate.getMonth()+1, -1);
	return myDate.getDate() + 1;
}

Calendar.prototype.getEmptyWDays = function (oDate) 
{
	var myDate = new Date(oDate)
	myDate.setDate(1);
	return (myDate.getDay()) ? myDate.getDay()-1  : 6;
}