Don't click this: Why modal dialog boxes are evil

[benhoyt]

http://sg.geocities.com/viceadmiralcongo/dont_click.htm

[benhoyt]

This is not just an evil example -- you also get this problem when you're debugging a JavaScript loop with an alert() and you forget to increment i. :-)

But I notice that Opera handles it nicely. Each alert comes up with a tick box, "Stop executing scripts on this page." Simple and effective.