I need a lightweight jquery plugin to build up a dropdown. I need this to work with both a source <select> or <ul>, this could be one or two separate plugins. The dropdown displayed needs to display the contents in multiple columns - I've only seen one plugin do this (http://www.givainc.com/labs/mcdropdown_jquery_plugin.htm) which is a great plugin but does more than I need and doesn't work for regular <select>.
Are there any plugins out there already that do this? I'm faced with rolling out a new one if I can't find an existing one. Also if anyone has any ideas on the best way to approach writing a plugin of this nature I'd be very grateful!