Page shifting left inexplicably in FF

Hi,

I'm working on this site: http://research.hrc.utexas.edu/jamesjoycechecklist/index.cfm
I've been trying (for much too long) to figure out why the "Help" page shifts to the left relative to the other pages in FF (It doesn't perform this behavior in IE on my machine). I'm pretty new to this and haven't had any luck searching for solutions, so I appeal to the pros.

I'd be thankful for any suggestions of places to look for solutions -- I'm definitely not expecting y'all to hunt through my code, unless you want to!

Thanks in advance,

Ransomcat

The help page looks the same as all the rest to me... The only reason I see it moving a few pixels to the left is because the content is longer, causing a scroll bar to appear. This shrinks the overall width of the page meaning that anything positioned based on a percentage will be moved to accomodate.

It seems to do the same for me in IE so I'm not actually sure if that's what you're talking about....

Thanks, soap_box -- the scrollbar must be the issue.

ransomcat