Thanks Pof,
I would love to take a look at your component especially the fla, but when I clicked on the link at the end of referenced posting & downloaded the zip file, all that was in it was an acrobat reader file which failed to open?
I should be able to manage with the method you have recommended but if that fla is knocking about I would be keen to take a look.
Thank you for your suggestion of clearing the interval - I still have the palm print on my forehead from the slap of anguish I gave myself on reading your post & not thinking of that myself!
