var xmlhttp;

function load(str)
{

document.getElementById("txtHint").innerHTML="<div align='center'><br><br><br><br><br><br><br><img src='images/load.gif'  border='o' /><br><h2>loading ...</br></div>";
showUser(str);

}

function showUser(str)
{
xmlhttp=GetXmlHttpObject(str);
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url=str;
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

function stateChanged()
{
if (xmlhttp.readyState==4)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}

function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  }
return null;
}