The site is
http://mcel.pacificu.edu/barlow/cour...8/spring/h213/
I've been assigned to "correct" this issue, and didn't build the page myself. It's a bizarre problem, though. There should be two pictures in the upper-left corner (you'll see them if you're using IE), but for some reason, they aren't being loaded by Firefox.
And ideas or suggestions? I'd like to get this figured out. I was under the impression that more often it was IE that had issues with .png files, not FF :/