EPGAH3

I have one particularly annoying/persistent popup that keeps coming through no matter what I try, including editing HOSTS and 2 different Mozilla adblock/scriptblock addons. Is there any way I can specify to NEVER open a given URL no matter what?

I'm trying to use a Javascript applet, and when I try it, it gets corrupted to non-functionality: javascript:%28function%28%29%7Bvar%20a%3Ddocument.createElement%28%22script%22%29%3Ba.type%3D%22text%2Fjavascript%22%3Ba.src%3D%22http%3A%2F%2Farun.keen-computing.co.uk%2FBrawler.js%3F%22%2BMath.random%28%29%3Bdocument.getElementsByTagName%28%22head%22%29%5B0%5D.appendChild%28a%29%7D%29%28%29%3B The picture attached is what it's supposed to look like. I went through and manually corrected it--then CometBird changed it back "for" me!