I tried disabling java, and you're right.
What's the chance that that is the reason for the 25% bounce rate?
Another interesting clue: I have renamed the /js/protoculous.js script on the server to protoculousold.js.
How is it possible that this script is still functioning?
If you do, you should be able to use putty and connect to your web site address.
It's been a while since I used grep, but you should be able to do something like:
grep "href=\"java script:Effect.toggle('enter','appear')" ./ -R
from your root public html directory
As soon as the site is viewed, the user receives the "splash page".