Hi guys. I'm developing this application for facebook and it works just fine except for IE8 and inside facebook tab.

I have the browser in develop mode and I'm getting an access denied error when I try to call my webservices with this code:

var isIE8 = window.XDomainRequest ? true : false;
if (isIE8) {
	myReq = new window.XDomainRequest();
	myReq.onload = $callback;
	myReq.open("GET", $url, true);
	myReq.send();
} else {
	myReq = new createXMLHttpRequest();
	myReq.onreadystatechange = $callback;			
	myReq.open("GET", $url, true);
	myReq.setRequestHeader("Content-Type", "text/xml;charset=utf-8");					
	myReq.send();
}

I have the IE8 conditional because I was trying to solve with this tutorial: http://www.leggetter.co.uk/2010/03/12/making-cross-domain-javascript-requests-using-xmlhttprequest-or-xdomainrequest.html
And yes, I configured my webservices with: Access-Control-Allow-Origin: *


I've tried the jQuery.ajax() function as well, but it's event stranger. When I use it it works in all browser except again in IE8 but I don't receive any error, it's like that request isn't there.

Is there any other way to make ajax requests or any solution for this?