If I understand you correctly, you're looking for an open/closed window notifier. Unfortunately such notifiers don't actually work anymore. Here is a post containing lots of info and links to further discussions.
hi there (looking for a notifier) - by undertaker123 on 07-14-2008 at 09:50 PM RE: hi there - by spongeboy on 07-14-2008 at 10:57 PM RE: hi there - by Aeryn on 07-15-2008 at 08:14 AM RE: hi there - by undertaker123 on 07-15-2008 at 09:19 AM RE: hi there - by Volv on 07-15-2008 at 11:00 AM
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