Forum Moderators: open
It's best overall to make sure you are not dependant on Javascript to display your page correctly. The problem with NIS is that it uses a transparent proxy to insert its own Javascript in the head section of every page. However, it is particularly ham-fisted in the way it does so, and it breaks quite a few pages.
There are a couple of recent threads relating to the joy of NIS. Try this one in particular:
[webmasterworld.com...]
It will give you some good pointers for geting around your particular problem.