var xmlHttp2

function cahngesub4(val)
{
	
	xmlHttp2=GetXmlHttpObject()
	if (xmlHttp2==null)
	  {
	  alert ("Browser does not support HTTP Request")
	  return
	  } 
	
	var url="baseajax.php"
	url=url+"?coursenm="+val 
	//url=url+"&sid="+Math.random()
	
	xmlHttp2.onreadystatechange=stateChanged3 
	
	xmlHttp2.open("GET",url,true)
	xmlHttp2.send(null)
} 
 
function stateChanged3() 
{ 

	if (xmlHttp2.readyState==4 || xmlHttp2.readyState=="complete")
	 {
		
	   document.getElementById("txtbase").innerHTML=xmlHttp2.responseText 
	 } 
}

function GetXmlHttpObject()
{
var xmlHttp2=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp2=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp2=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp2=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp2;
}