http://www.mafocus.co.uk - like this

When you click on a link on the left the pages with in that appear underneath, when you click on the ones under neath the top level and second levels ones stay the same unless you click another top level one in which case you get a list of the section for that page. Its would be great if this was infinite, well at least 4 levels.

Iv been trying to use the Inventua side menu which doesn't do it, the standard TreeView menu only shows child section if you press the + button. I really need a module I can stick in every page and have the same settings for it no matter where it is.

My client is not very technical and I wouldn't want them to have to do too much every time they add a page. Is there a module out there like this or another way of achieving it?

thanks