Still tinkering with the thrice-&§$% archive

Okay. This page has a black-border-with-white-background when viewed with Firefox, while in IE is has a black-border-with-blue-background. This confuses me greatly. Is there even a logical explanation for this? (It's supposed to be blue, by the way.)

eta: fixed! :o) (Thanks to minim_calibre's mad computer skillz)