Only half of full size image being displayed

chocolatekindofcool

www.chocolatekindofcool.com/zenphoto

When viewing any of the full size images, only half of the image is displayed unless you hover over the picture. I had several other people try on their own computers, and they get the exact same thing. We are all using IE7 though, so I'm not sure if it's browser specific :-( Can anyone clue me in as to a possible solution for this?

acrylian

I can't see any unusal behaviour in Safari and Firefox.