var xmlHttp;

function getMonthOfYear(month, year)
{
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 } 
document.getElementById("calendarInner").style.background="url(/images/ajax-loader.gif) center no-repeat";
var url="/calendar.php";
url=url+"?month="+month;
url=url+"&year="+year;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 


function stateChanged() 
{ 
 if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("calendar").
 innerHTML=xmlHttp.responseText;
 document.getElementById("calendarInner").style.background="";
 } 
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null;
if (window.XMLHttpRequest)
 {
 objXMLHttp=new XMLHttpRequest();
 }
else if (window.ActiveXObject)
 {
 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
 }
return objXMLHttp;
}