var xmlhttp;

  function showUser(str)
  {

      xmlhttp=GetXmlHttpObject();

	if (xmlhttp==null)
  	{

	  alert ("Browser does not support HTTP Request");
        
	  return;
        }

	var url="getcountry.php";
	url=url+"?q="+str;
	url=url+"&sid="+Math.random();

	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;
    }