function AjaxFunction(obj) {
	var httpxml;

	try
	  {
	  // Firefox, Opera 8.0+, Safari
	  httpxml=new XMLHttpRequest();
	  }
	catch (e)
	  {
	  // Internet Explorer
			  try
						{
					 httpxml=new ActiveXObject("Msxml2.XMLHTTP");
						}
				catch (e)
						{
					try
				{
				httpxml=new ActiveXObject("Microsoft.XMLHTTP");
				 }
					catch (e)
				{
				alert("Your browser does not support AJAX!");
				return false;
				}
				}
	  }
	  function handler() 
	  {
		if(httpxml.readyState==4){
			if (httpxml.responseText!="ERR"){
				elem = document.getElementById("invite_submit");
				elem.style.display = "none";
				elem = document.getElementById("invite_email");
				elem.style.display = "none";
				elem = document.getElementById("invite_msg");
				elem.style.display = "block";
				document.getElementById("invite_msg").innerHTML=httpxml.responseText;
			}else{
				alert ('A AJAX submit error occurred, please refresh the page and try again.');
			}
		  } 
		}

	var value = document.getElementById("invite_email").value; 
	if (value)
	{
		if (value != "Enter an email address we can send an invite")
		{
			var url = "ajax.php";
			url = url + "?email=" + value;
			url = url + "&sid="+document.getElementById("auth_check").value;
			httpxml.onreadystatechange=handler;
			httpxml.open("GET",url,true);
			httpxml.send(null);
		}
	}
}