var xmlHttp;
function count()
{
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
//document.getElementById("cnt").innerHTML="Loading.......";    
var url="count.php";
url=url+"?sid="+Math.random();
//alert (url);
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
} 
function stateChanged() 
{ 
if (xmlHttp.readyState==4) //alert (xmlHttp.responseText);
document.getElementById("cnt").innerHTML=xmlHttp.responseText;
}
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;
}