cargo

Hello all,
I need a little help here as javascript is not my strongpoint. We currently use a website to access our email (this exists inside the network portal). Accessing the site is not a problem. It's accessing one particular piece of a page that's causing problems (It's basically a couple buttons which allow the user to change some email options).
Now, when I use IE6 or FF, it comes up fine. When I use IE7, I keep getting a "permission denied" error and the buttons will not show. I've been working on this for 3 days to no avail. It seems like it might be a Same-Origin Policy issue from what I could understand. I printed out the script for this particular button menu on the site and it keeps stopping on:
main = parent.main
I've tried the User-Agent utility so that IE7's user-agent string shows as IE6 but no luck. Is this something I can workaround via a change in the registry?, Group Policy? or does the script need to be changed on the site to accommodate IE7?
Any help would be greatly appreciated guys. Thanks.