Oops, sorry, I thought I was making some fairly elementary Perl blunder that my example would illustrate. It turns out that in fact the function I thought was giving me the parent node was in fact incorrectly returning an integer. Doh.

I shall look a bit harder myself before posting again next time. Thanks for the interest anyway.

The Monk with Egg All Over his Face, All Down the Front of His Habit, and Quite a Lot on the Keyboard too