4 level Wordpress collapsible menu

I was having some problem creating a dynamic 4 level wordpress menu. I finally came across this script which works like a charm. http://curtishenson.com/dynamic-multi-level-page-menus-in-wordpress/ .

I have attached a screen shot, Im sure the first thing you will say is that it is 3 levels.. but I am starting at the second level and the first level is at the top of the page.  This is a re-post, yet worth mentioning as when I finally found it, it saved me lots of time of trying to figure it out myself. Thanks Curtis.