I keep getting the runtime error message mywin is null or object not found error going to some webpages. What is that and how can I fix it?

on this page http://jessiekitty.com/jess2.html

and this one

http://bostonbrat.net/cam.php

found it. google toolbar caused error when blocking popups. If anyone has this problem reinstall it and click yes to turn off error debuging.