hv menu--script conflict?

[Judy]

I've been using the hv menu, and love it. But suddenly, I'm having a problem that makes no sense to me.

I added two IFrames to a page, and in each is a page with javascript. The hv menu ceased being static when I added the script to the pages in the IFrames.

Menu works fine on all the other pages I use IFrames on.

Here's a link:

http://www.regardless-shorthairs.com/ezb_simple_genetics.htm