I'm always amazed when I review an otherwise well-designed site but who's designers still either completely ignore or are completely unaware of this issue with the Firefox scrollbar. When not catered for the resulting FF 'jump' when the scrollbar appears is disconcerting, not to mention takes from the quality of the site, so there's no reason to ignore it, particularly with the rise in popularity of FF.
Firefox
Firefox Quick Search bookmarks (updated for FF 3)
Submitted on Tuesday 12th August 2008Here's a Firefox feature that will save lots of keystrokes, mouse clicks and thus help to reduce your likelihood of developing related repetitive strain injuries.
This is just a quick guide - many people have written about this so do a Google search for "firefox quick search" for a more in-depth explanation.
If you regularly perform a search on a particular site then set up your quick search by following the steps below; I regularly search drupal.org so I'll use that as an example.