Pop-it allows you to associate a dynamic menu with regular links on your page. As the mouse moves over the link in question, a menu pops up containing 'sub links'. Think of it as a 'loose' drop down menu.

This is a great script for expanding links on your page with a 2nd level. The menu intelligently re-positions itself depending on how close it is to the edge of the browser window, so it's always in full view.

This script works in IE4+, NS4, and NS6+/Opera7+. You can specify a valid default URL for each link for other browsers to navigate to.