but... there is a minor issue with your approach. if someone checks a box on third level and the upper level is not checked, his check will be wiped out. this is also why I wanted to have the tri-state checkbox action in there.
maybe something like the following. a) if all childnodes checked, check also the parent b) if parent is de-checked, uncheck all children c) if parent is checked, check all children
note that the example ini doesn't really work for testing anymore as we only have 1 child in every node.
