IE6 + 7 jQuery Accordion not working

I am having a problem with the jQuery UI Accordion working on IE6 + 7.
All functionality isn't working. Very confused why. I was wondering if
someone has come across this problem before and how to fix it. If
someone could help me I would appreciate it.
Problem is at:
http://www.electricvisualgoggles.com/
Please let me know if someone can help. Thank you.