For posting AJAX forms in a form with many parameters, I am using a solution of creating an `iframe`, posting the form to it by POST, and then accessing the `iframe`'s content. 
specifically, I am accessing the content like this:

```
$("some_iframe_id").get(0).contentWindow.document

```

I tested it and it worked. 

On some of the pages, I started getting an "Access is denied" error. As far as I know, this shouldn't happen if the iframe is served from the same domain. 

I'm pretty sure it was working before. Anybody have a clue? 

If I'm not being clear enough: I'm posting to the *same domain*. So this is not a cross-domain request. I am testing on IE only.

P.S. I can't use simple ajax POST queries (don't ask...)