//validate.js

var xmlHttp;

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;
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("info").innerHTML=xmlHttp.responseText;
  } 
}


function validate()
{ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
var email = document.getElementById("email").value;
var params = "&email=" +email
url = "validate_email.php";
url=url+"?sid="+Math.random(); 
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("POST",url,true);
xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded")
xmlHttp.send(params);
}


function disable_sub(){
	document.getElementById("sub").disabled = true;	
	}

function enable_sub(){
	document.getElementById("sub").disabled = false;
	}