Many of the people who view my websites aren't very into computers so I like to use a container div that is 770px wide so the full width will show on a 800x600 screen. I also like to center the container (right and left margins auto) so the display looks nice on a larger screen. This works well with IE because there is always a vertical scroll bar even if it isn't needed.
The problem is with Firefox the vertical scroll bar comes and goes depending on the vertical size of the page. I find this annoying and suspect others do too. I suppose one could force the container to be very tall even if it is not all used but that seems like a bad idea.
Any suggestions for a solution to the Firefox problem would be appreciated.