var subscribe_script = 'http://www.mansionproductions.com/subscriber.php';
function makeRequest() {
  var http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari, ...
     http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
           http_request.overrideMimeType('text/xml');
        }
  }
  else if (window.ActiveXObject) { // IE
       try {
          http_request = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
  }
  if (!http_request) {
     return false;
  }
  return http_request;
}
function requestResponse(http_request) {
  if (http_request.readyState == 4 || http_request.readyState == 'complete') {
     if (http_request.status == 200) { 
	 //request_form.innerHTML = http_request.responseText;
        //alert(http_request.responseText);
        document.getElementById('email').value = '';
        alert('You have been subscribed successfully');
	 
     }
     else {
        alert('Error!');
     }
  }
}

function subscribe()
{
	var request_content = document.getElementById('email').value;
	if(validateEmail(request_content))
	{
		var http_request = makeRequest();
		var postData = 'email=' + request_content;
		//alert(subscribe_script);
		http_request.open('post', subscribe_script, true);
		http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		http_request.onreadystatechange = function() { requestResponse(http_request); };
		http_request.send(postData);
	}
	else
	{
		alert("Invalid email detected.");
		return false;
	}
}

function validateEmail(elementValue)
{
	var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; 
	return emailPattern.test(elementValue); 
}