I’ve been doing some accessibility programming/testing around the condition of the user turning off images. The Firefox web developer toolbar makes it real easy to turn images on and off – except there’s one gotcha. You have to be running your page on a server to get this to happen. If you just open up a file, your images remain in view. So, remember – http:// not file://.
Hope this helps someone from a couple of wasted hours trying to figure out what’s going on…..