Trouble with frames and Mozilla Firefox version 1.0.2

I've made a page containing two frames placed vertically above each other. First frame is just about 300 px high, and the second one below it shall be scrollable. It's all centred and aligned smoothly. But as soon as the content in frame 2 needs scrolling (it's set to auto), the scrollbar appears on the right and shifts the contents of the second frame a few pixels to the left. Which looks of course not appealing at all. Is there a way to fix it?
marginwidth = "" doesn't seem to work with frames too.

With IE it works fine though ... it's just Mozilla Firefox which drives me crazy ... ;).

I'd be greatful for all responses! This is an emergency. Thank you!!

Me too

I can't see my grid inside a frame (within another frame) in Firefox at all.

Perhaps you have it centered. If you tried giving it a static alignment (within the frame) using CSS, it might not shift over when the scrollbar appears.