CSS Menu help
I've seen it before. I want to make a menu that expands in a vertical fashion when a '+' next to a menu item is clicked
example: (when not clicked at all the menu will look like this)
(all of those will be lnks to pages)
when a '+' is clicked, it will look like this. let's say i clicked the first '+'
(indent) secondary menu item1
(indent) secondary menu item2
(indent) secondary menu item3
(indent) secondary menu item4
(clicking the '-' will collapse the menu)
Any idea how I can do this. Even if you could just give me a name for his type of menu, or a link that might help me, it would be infinitely helpful.