Javascript Cart

Hello all,
  I am currently in the process of creating an online shopping cart and
need a few brave volunteers to help debug the process.
I have tested out the script on my own machine using Netscape Comm 4.06 and
IE 4.01, but had a friend try to add an item to the cart and it crashed his
Netscape Comm 4.06.
If you are willing I would like any feedback, errors etc you get while
viewing the cart.
The cart uses javascript and cookies so they are both required to be on.

Page is at:
http://www.dibbs.net/raindropweb/alstar/belts.html

Script code is at:
http://www.dibbs.net/raindropweb/alstar/scripts.txt

The other pages are not workable yet, nor is the checkout button.

TIA,
  Jurden Bruce

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