This uses just CSS 2 to turn nested lists into a working menu and does not use any JavaScript (except in IE 5.5-6 on windows where I use the proprietary DHTML behaviours, because its CSS handling is not good enough to work this menu without script)
This works in Mozilla 1+, Netscape 7+, Opera 7+, Safari build 60+, OmniWeb 4.5+, Konqueror 3.2+, iCab 3+ and IE 5.5+ on Windows (using DHTML behaviours)
This produces a styled nested list in IE 4, Netscape 4, OmniWeb 4.2-, iCab 2- and...