[intel352]

I just checked out your site's xcart install, looks like it worked! Did you have to change anything, or did it do fine as-is?

EDIT: I just noticed 1 issue in the _get_absolute_parent function, if you haven't corrected it already, I suggest you copy that into your code.
When the function calls itself again, it wasn't referring to the proper parentid variable, I fixed that in my post.