How to make such knid of Menu

Hi,
I need to make a navagation menu that will be put on the left side of web pages. The menu has following requirements:
When I click an item folder, it expands, when I click a link under the folder, it opens another page. usually, when another page is loaded, the menu collapse. I need to keep the menu open and the link highlighed. An example of this menu can be found at "http://www.jdedwards.com/public/0,1921,0%257E133%257E,00.html".
Does someone has sample code for this kind of menu?
Many thanks,

if you had left off the "" it would have created a link like this
http://www.jdedwards.com/public/0,1921,0%257E133%257E,00.html
i just wanted to make it easier for people to go there

Hi,
if you want the one on the left, they just have different html per page with menu

Just draw it.
You could also look at http://webreference.com/dhtml/ - this menu is crossbrowser and pretty good.
The only problem with it - in NS4.7, if you have on your page META with charset UTF8 it does not work. But it is a really rare case.(it hit me, though)