Hi Nancy,
I have finally discovered the Mozilla Firefox extensions. My favorite extension, so far, is the calendar which is still in beta. Although I'm 99% sure you are aware of it, I include the link below for anyone else that my be interested.
http://www.mozilla.org/projects/calendar/download.htmlGood luck with getting your asp.net javascripts going on Firefox.
I'm going to take a look at tidy extension which sound interesting.
Regards,
LelandJ