true, ladyalex, but googling can be unreliable - one wrong 'fact' can be cut and pasted across dozens of sites, giving a sort of false positive. So I never really blame people who are a bit wary of it. The whole point of AB is to get live answers to live questions from, hopefully, someone who knows - which is why I frist came on here myself. Those who don't feel like doing homework for others can always ignore the thread, after all.