Here is the page in question

replacement-mattress dot com/compare/compare.htm

It contains a frameset within an iframe.

When viewed with firefox it works like a charm. To see what I mean, click "price" then click on the first item. Note that the top window needs no horizontal scrolling. The bottom frame does need vertical and horizontal, and the scroll-bars are there. The page has its own vertical scroll-bar. Beautiful.

The problem is with Internet explorer. The ifame gets its vertical scroll-bar, but the framesets get nothing at all to scroll with. Maybe this cannot be done, but its a great page if I can make it work.

Can you help?

I don't think that it would be a very great page. It's not the best way that you could do that. You could use PHP to do that, and then not have to bother with those troublesome frames.