var xmlHttp
function GetXmlHttpObject()
{ 
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
}
function show_cal(year,monthNo)
{ 

	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert("Browser does not support HTTP Request")
		return
	} 
	
var url="show_calender.php"
	url=url+"?year="+year+'&monthNo='+monthNo
	url=url+"&sid="+Math.random()
	//alert(url);
	xmlHttp.onreadystatechange=display_change 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}
function display_change() 
{ 
	if(xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ 
		document.getElementById("show_calender_details").innerHTML=xmlHttp.responseText 
	} 
}