Controlling scroll position for Facebook iFrame application's parent frame

I've got a Facebook iFrame application happily up and running, but I'm realizing that I don't have a way to handle the scroll position of the parent frame because of cross-domain issues. If a user clicks too far down on the page, I can't pop them back up to the top.

Has anyone had an luck with either any of the Facebook JS libraries or other JavaScript trickery to pull this off?

Thanks!