Help is a Pop-Up Menu
http://www.macdesignonline.com/tutorials/golive/090704.html

Mac Design Magazine
2005

Abstract:

Efficient layout is a key to a good website. When you've got a lot of links one option that can help is a pop-up menu. You can use a ULR popup menu in its generic form or you can use CSS to customize its look. This tutorial shows a simplified use.