Oh! I see. I had a <?php include()?> and the inserted menu bar had the <html> and <body> tags.
I've fixed that problem and It is still doing the same thing. Its only when that link is used.
If i use.
the menu bar is in the correct place.
I am able to just shift the site content down for that page but then that page won't be uniform to the rest of the site. It's not a big deal but it is preferable.
I can't figure out what exactly is causing it. It only happens in Firefox.. the menu bar is php included.. I can't think of any other details that might matter.