Prevent browsers opening sites with certificate errors?

Ok, so I just have browsers set to warn me and then I make my own decision...

but;

If I did want to automatically block the browser from opening any site with a certificate error how would I go about it for FF4, IE9 & Opera11?

After all, the websites should really have their certs in order, (although I know there's other reasons for errors too).

Any thoughts on STS (HSTS) that's to be implemented in FF5, (it may already be in FF4 - I'm not sure)? Are any other browsers implementing this too, and if so, when?

 

As far as i know ANY BROWSER will alert you if the cert has errors.....

 

Certificate Patrol is a great add-on for Firefox.

 

There's Perspectives (FF, Ch), SaferChrome (Ch), SSLGuard (FF), and Calomel SSL Validation (FF) as well.

 

Thanks for the replies.

I'll take a look at these.