var request = false;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
  request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
  try {
    request = new ActiveXObject("Microsoft.XMLHTTP");
  } catch (e2) {
    request = false;
  }
}
@end @*/

if (!request && typeof XMLHttpRequest != 'undefined') {
  request = new XMLHttpRequest(); 
}

function sendData() {
var em_signup = document.getElementById("em_signup").value;
var url = 'update_subscriber.php';
request.open("POST", url, true);
request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
request.onreadystatechange = updateDiv;
request.send("em_signup=" + em_signup);

}


function updateDiv() {
if (request.readyState == 4) {
        if (request.status == 200) {

var subscriber =  request.responseXML;
var subscriber_email = subscriber.getElementsByTagName("subscriber_email")[0].firstChild.nodeValue;
var signup = document.getElementById('signup');
signup.innerHTML='<h1 id="signup_h">Thank you!</h1><p>Newsletter status: subscribed<br /><a href="#" onclick="Unsubscribe()";>Unsubscribe</a></p>';
		
        }
}

}

function Unsubscribe() { 
alert('Success! You email address has been removed from our mailing list.');
var signup = document.getElementById('signup');
signup.innerHTML='<h1 id="signup_h">NEWSLETTER SIGNUP </h1><form action="" method="post"><input type="text" id="em_signup" name="em_signup" value="Your email here" onclick="SignUp()";  /><input  type="button" value="Go" onclick="sendData();" /></form><p><a href="previous_nletters.php">Previous newsletters</a></p>';
}