Hope you had a great day off
Umm - very nice site your friend has (thanks for sharing the link)... I must admit that I really like the "Refine Results / Drill Down" modifications and some of the other features, that they have done - great to see some Kiwis making X-Cart even better
As a sideline, it would be worth them getting Jon's SEO Pro mod sometime though as well, so that they can better control / optimise meta content for search engines.
Cheers and all the best, Andrew