XML Driven Drop Down Menu - Help?

Hey, I’ve been messing around with senoculars XML Menu tutorial HERE.
I’ll be honest, my AS is a bit sucky so I’m just playing straight with the code in the source file at the end.

I can manage getting the whole thing to work, it’s just that I want the main menu to be horizontal, and the sub menus vertical. As it stands I can only get the whole thing to go horizontal, as the entire orientation of the menu structure is controlled by a few lines of code - eg: the menu/sub menu/sub sub menu are all controlled by the same bit, or so that’s how it seems to work for me. I would imagine that this is gonna take some code editing that is somewhat beyond me, so any help would be appreciated.

Thanks

JP