function subscribe_to_mail()
{


   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.getElementById('email_address').value;
   if(reg.test(address) == false) {
     
	  alert("Invalid Email Address");
      return false;
   }
   
var xmlHttp;
//alert("function called");
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }


  
   xmlHttp.onreadystatechange=function()
    {
	
	if(xmlHttp.readyState==1){
		//document.getElementById('subscribe-to-thank').innerHTML='Mail Sending <img src="'+site_url+'/images/ajax-loader.gif"/>';
		//alert('1')
		}
    if(xmlHttp.readyState==4)
      {
	  	document.getElementById('subscribe-to-thank').innerHTML='Thank you for subscribing.';
	//	alert('4');
		 
      }
    }
	

	  
	  var url="http://www.imuniversity.ca/wp-content/themes/kaplan/subscribe-email.php";
	  var email = document.getElementById('email_address').value;
	  var fname = document.getElementById('first_name').value;
	url+="?email="+email;
	url+="&fname="+fname;

	
	
	  xmlHttp.open("GET",url,true);
  xmlHttp.send(null);

}