CSS based drop-down menu - all floats

A basic CSS 5-level drop-down / fly-out nested list menu.
All float-manipulation - no 'position: absolute' or 'display; none'.

5 levels reached through list-items marked  *  .
Forth and fifth level are stacked on top of grandparents, thus can normally not be accessed in IE6 and IE7 since stacking is locked to parents in those browser-versions – a bug.
On this page I've avoided stacking on all levels but the forth and fifth, and (sort of) made it work in IE6 and IE7.

created: Hageland - 01.apr.2008 - on April Fool's day
author: G. Sørtun