[jQuery] IE6 script error? Superfish

Hi, I am having a hard time getting the dropdown nav under "about us"
to work in IE6 on this site:

http://www.mccauleycelin.com/index.php

It seems to work it every browser except IE6 (big shocker). Every time
I load the page in IE6, I get a script error that points to the
initialization script in the header. Am I missing something simple
here? I'm pretty sure the CSS is correct.