sidepanel script local problem

[oldmanInAz]

ajax sidepanel

http://www.dynamicdrive.com/dynamicindex17/ajaxsidepanel.htm

Locally, using firefox 9, the targeted page loads entirely, showing the entire contents, while the online version shows only the targeted divisions.

http://mroldies.net/Artists-A1.html

As long as it works as intended online I'm happy with that.
But I'd like to know what I can do to make it work locally as well.
Any ideas welcomed.

BTW, I have FF set not to cache.

[ddadmin]

Hmm I know that Ajax doesn't run locally in certain browsers such as Google Chrome. Not sure if this is the case in FF 9, as in FF 14, it does work.