Why Don’t Plugin Menus Work?

please help!

i have tried 3 different page-menu plugins. none of them display dropdown menus in my sidebar. i only get my unordered page-list. any guesses as to why? seems to be an issue with my theme, but i don’t know what. these menus don’t work when i embed them in pages, either.

demo of problem:
my demo (see sidebar)

menu plugins used:
Multi-Level Nav (formerly Suckerfish)

wp_jquery_dropdown

jquery acco

php:
i am using the php code widget. but my results were the same when i tried the phpexec plugin. the php seems to work, otherwise i would not get the unordered lists from embedded wp_pages function.

javascript:
see the bottom of my demo sidebar for a javascript test, which works.