function reloadModelQuestion(str1,str2,str3)
{
var xmlHttpfunction;
{
 xmlHttp=GetXmlHttpObject();
 if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 } 
 var url="divmodelquestion.php";
url=url+"?university="+str1+"&course="+str2+"&sem="+str3;
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
}
}
function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById('modelquestions').innerHTML=xmlHttp.responseText;
 } 
  else
 {
 document.getElementById('maincontent').innerHTML='<table align="center" height="400"><tr><td align="center" valign="middle"><img src="ajax-loader.gif"></td></tr></table>';
 }
}
function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}