I have included moo.fx accordion effects on my sidebar. You can see it in action if you click on a title :D.
From the moo.fx website:
moo.fx is a superlightweight, ultratiny, megasmall javascript effects library, written with prototype.js.
It’s easy to use, fast, cross-browser, standards compliant, provides controls to modify Height, Width, and Opacity with builtin checks that won’t let a user break the effect with multiple crazy clicks. It’s also optimized to make you write the lesser code possible.
moo.fx has been successfully tested with: Firefox,
Safari and Internet Explorer.
It should work in most of the gecko browsers too. Only Height and Width will work in Opera,
since that browser does not support opacity.
More info here.
Thanks man, i agree