Help with Firefox

[mhabca]

I am completely new and basically have no idea what I am doing. Here is my trial website:

http://www.capeisgreat.org/trialindex.html

Everything works fine in Safari. In firefox, the dropdowns do not work. However if you go here:

http://www.capeisgreat.org/comingsoon.html
they work just fine. It makes no sense, since the "coming soon" page is simply a copy and past of the trial index page. Why would one work and not the other?

I'd really appreciate some help. Thanks.