[Plugin: Gallery] Clicking on image in gallery, Lightbox opens funky

I have a temp page up at http://complete-office.com/complete-officefurniture.com/?page_id=96

If you click on one of the pictures the lightbox does display, but while it is doing it’s opening transition the background stretches to the bottom of the screen instead of expanding from the center. Hard to explain, if you click on the image you’ll see what I mean. Just look at the bottom of the image during the transition of when the light box opens.

I have no idea what would be causing this. Any ideas? Thank you.

http://wordpress.org/extend/plugins/gallery-plugin/