create in-memort rdf for populating multi-level XUL tree
I got probelm to populate a XUL tree with an in-memory rdf data source.
All sapmle code I've seen so far were just created a tree with only
just one top level (eg:
http://in.geocities.com/skexz/tuts/xul/in-memory.htm). Is anyone knows
how to create a in-memort rdf with structure like below (two levels):