/**
 * XMLHttpRequest생성
 * @param null
 * @return Object
 */
function xhr()
{
	var xmlreq = false;
	if (window.XMLHttpRequest) { xmlreq = new XMLHttpRequest();}
	else if (window.ActiveXObject) {
		try { xmlreq = new ActiveXObject("Msxml2.XMLHTTP"); }
		catch (e1) {
			try { xmlreq = new ActiveXObject("Microsoft.XMLHTTP"); }
			catch (e2) {}
		}
	}
	return xmlreq;
}

/**
 * 달력컨트롤
 * @author 차현미
 * @date 2008-04-16
 */
function CalendarController()
{
	var oDate = new Date();
	this.calendar_ym = oDate.getFullYear().toString() + ( oDate.getMonth() + 1 ).toString();
}

/**
 * 달력폼 생성
	 * @param Number year
	 * @param Number month
	 * @param Number date
 * @return void
 */
CalendarController.prototype.getCalendar = function(year, month, date)
{
	if(!year) year = '';
	if(!month) month = '';
	if(!date) date = '';

	if(year == '')
	{
		var oDate2 = new Date();
		dateDispaly = oDate2.getFullYear().toString()+'년 '+ ( oDate2.getMonth() + 1 ).toString()+'월';
	}
	else
	{
		dateDispaly = year.toString()+'년 '+ month.toString()+'월';
	}
	
	oXHR = xhr();
	oXHR.onreadystatechange = function()
	{
		if( oXHR.readyState == 4 )
		{
			if( oXHR.status == 200 )
			{
				document.getElementById('result').innerHTML = oXHR.responseText;
				document.getElementById('cur').innerHTML = '<span class="m_car_tle">' + dateDispaly + '</span>';
			}
		}
	};

	oXHR.open('POST', '/chtml/reservation/reservation_calender.php?comReservationMode=calender&template=base', true);
	oXHR.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	oXHR.send('year=' + year + '&month=' + month + '&date=' + date);
}

/**
 * 달력월 이동
 * @param String type
 * @return void
 */
CalendarController.prototype.moveMonth = function(type)
{
	var ym = this.calendar_ym;
	var year = ym.substring(0, 4);
	var month = parseInt(ym.substring(4),10);
	if( type == 'prev') 
	{
		month--;
		if( month == 0 )
		{
			year--;
			month = 12;
		}
	}

	if( type == 'next')
	{
		month++;
		if( month == 13 )
		{
			year++;
			month = 1;
		}
	}

	this.getCalendar(year, month);
	this.calendar_ym = year.toString() + month.toString();
}

/**
 * event-onload
 */
window.onload = function()
{
	ACV = new CalendarController();
	ACV.getCalendar();
}