Why doesn't this different method of calling an AJAX request fail?
<p>This is the code from my site: view-source:http://davidjamal.webng.com/DavidGodfrey/ajax_request.html</p>

<p>If you need another source, here: <a href="http://jsfiddle.net/rXkxa/" rel="nofollow">http://jsfiddle.net/rXkxa/</a></p>

<p>I'm not calling the AJAX request on JSFiddle's site. I'm just posting the code there simply to show you. When I try to call the request using <code>HTTPRequest.dispatch();</code>, it returns this error:</p>

<p><code>Unsafe JavaScript attempt to access frame with URL <a href="http://davidjamal.webng.com/DavidGodfrey/ajax" rel="nofollow">http://davidjamal.webng.com/DavidGodfrey/ajax</a>_request.html from frame with URL <a href="http://ad.adnetwork.net/st?ad" rel="nofollow">http://ad.adnetwork.net/st?ad</a>_type=iframe&amp;ad_size=728x90&amp;section=1912997. Domains, protocols and ports must match.</code></p>
