[Greasemonkey] My script kills firefox

[Olafur Arason]

My script:
http://hi.is/~olafura/fixveftivi.user.js
I don't know if it is the totem firefox plugin, firefox or
greasemonkey or just my stupid script.
It's meant to fix a faulty Icelandic webpage that has a questionable
object and embedded use, not that I'm a expert, but it shows up blank
and I can hear sound but no music. With this script I can watch shows
normally but it crashes firefox quite often.

Olafur Arason
P.S. This is only my second greasemonkey script.