Yep, as you say, I did not use strict - yet. I inserted that into my live code, and guess what ? It broke. I was still testing it, and was planning to post an updated copy, but now I'll just try out your changes first, and see if I understand them. Thank you, and as soon as I have 'polished' the code (or can make it run...) I will update this. Regards, Gertjan