Menu like MSDN

I would like to create a menu like you find in MSDN. A drop-down with sub category headings and groupings of menu items underneath it. I tried Google and others I could think off, but I suspect I might not know the correct name for this type of menu because I am finding no solutions.

 

Check this link
http://www.cssmenus.co.uk/index.html

From the top you can select your style of menu.

 

He is asking for MSDN style menu, and it is not found at the site you mentioned.

MSDN style menu is like a "tree-view", he wrongly uses the word "drop-down".
These are exactly what Izaan needs :
(1) http://gandolf.homelinux.org/~smhanov/blog/?id=23
(2) http://www.codeproject.com/KB/custom-controls/PisceanTreeMenu.aspx

 

I thought he meant the menu on top and not the treeview navigation on left