// JavaScript Document
var request;
var Email;
function makeRequest() 
{

		request = new XMLHttpRequest();
	sendRequest();
}

function sendRequest()
{
	request.onreadystatechange = onResponse;
	email = document.getElementById("email").value;
	url = 'signup.php?email=' + email;
	request.open("GET", url, true);
	request.send(null);
}


function checkReadyState(obj)
{
			return true;

}

function onResponse() 
{
	if(checkReadyState(request))
	{	
		document.getElementById("email").value =  request.responseText;
	}
}