I actually saved your site for offline perusal and last night tried Firefox (no go - just like Chrome) and then tried IE which ignored the script to hide bits of images and showed everything just fine.
But it being a new day, I am trying again with Chrome and so far the Walls page is not displaying any walls, and the icons are shown, but more than half show more than one frame, but not both complete frames, let's say they're showing about 1.2 frames.
Oh, and I didn't find the sprites on your site, they're from the old site which I of course have backed up to my HD. ;ninjas: