HV Menu and Mac IE 5

[cancerman]

OK, My menu shows up fine in Safari, Firefox, Netscape and on the PC:

http://www.drexel.edu/academics/soe/soe05/main.html

But on IE 5 for Mac, it doesn't see the background jpegs. I can see the files fine if I link to them:

http://www.drexel.edu/academics/soe/soe05/images/MenuBG.jpg
http://www.drexel.edu/academics/soe/soe05/images/SubMenuBG.jpg

Any ideas?