The extension you've made has been on my to do list for some time. I hadn't really thought about how I'd make the change but your approach seems quite simple and effective - i.e. elegant! Thanks!! I'll definitely merge this stuff into my notebook before too long and I think we can improve it a bit too. I'm pretty slammed until the end of the week, though, so it won't be right away. Let me know if you make any more progress!