function newsletterSignup(url)
{
var arg = url;
url = "ajax_controller.php?q=" + url;
var http_request = false;

if (window.XMLHttpRequest) 
{ // Mozilla, Safari,...
http_request = new XMLHttpRequest();

if (http_request.overrideMimeType) 
{
http_request.overrideMimeType('text/xml');
// See note below about this line
}
} 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) 
{
alert('Giving up :( Cannot create an XMLHTTP instance');
return false;
}

http_request.onreadystatechange = function() { alertContents(http_request); };
http_request.open('GET', url, true);
http_request.send(null);

}

function alertContents(http_request) 
{
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			document.getElementById("newsform").innerHTML=http_request.responseText;
			document.getElementById("newsletterEmail").value='';
			document.getElementById("newsletterEmail").focus();
		} else {
			alert('There was a problem with the request.');
		}
	} else {
		document.getElementById("newsform").innerHTML="<img src='img/loading.gif' />";
	}
}