That's pretty cool! It's kind of a big disadvantage to have it only work in IE though. You should look into wddx to provide your javascript data structures for you for this project, should you decide to write something in perl.

I'm actually looking for a perl-only solution, because it's more important in this case for the menus to work properly, on every browser, than to save on the bandwidth.

Update: s/perl-only/html-only/

-Any sufficiently advanced technology is
indistinguishable from doubletalk.