var xmlHttp1
function getGroup(str)
{ 
	xmlHttp1=GetXmlHttpObject1();
	if (xmlHttp1==null)
	{
	  alert ("Your browser does not support AJAX!");
	  return;
  	} 
	var url="Ajx.asp";
	url=url+"?grp="+str;
	xmlHttp1.onreadystatechange=stateChanged1;
	xmlHttp1.open("GET",url,true);
	xmlHttp1.send(null);
}
function stateChanged1() 
{ 
	if (xmlHttp1.readyState==4)
	{ 
		document.getElementById("cmbCourse").innerHTML=xmlHttp1.responseText;
	}
}
function GetXmlHttpObject1()
	{
		var xmlHttp1=null;
		try
		{
			// Firefox, Opera 8.0+, Safari
			xmlHttp1=new XMLHttpRequest();
		  }
		catch (e)
		{
			// Internet Explorer
		try
	    {
		    xmlHttp1=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
	    {
		    xmlHttp1=new ActiveXObject("Microsoft.XMLHTTP");
	    }
	}
return xmlHttp1;
}