// JavaScript Document
var xmlHttpfunction;
function check_email(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="check_email.php";
url=url +"?q=" + str ;
url=url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
//alert(xmlHttp.response.text);
}function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 //document.getElementById("txtHint").innerHTML=xmlHttp.responseText 
 var nemail= xmlHttp.responseText ;
 if(nemail == 1)
 {
 alert('The entered email is Duplicate. Please try another'); 
	   		 document.contactus.email.value=''; 
			 document.contactus.email.focus(); 
			  return false;	 
	 
 }
 } 
}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;


}