Custom image filters for Opera 9.24?

Opera's built-in content blocker usually works great, except for a certain site where people post obnoxious gross-out avatars. Content blocking (even using shift-click to kill a specific image) will only block them for a day or two, then they come back.

So is there a way to block all images that are x by y pixels? I don't want to block all images from the entire domain.

If there's a solution that works with Firefox, I can switch over.

 

What is the site URL? Maybe I can find a way.

 

I'm embarrassed to say that it's forum.phun.org, which is NSFW.

Does the .php in the avatar's URL mean that it's being pulled dynamically out of a database every time, rather than being at the same static address each day?

I don't want to block the entire domain, since searching the forum requires viewing a CAPTCHA.

 

In Opera go to Tools > Advanced > Blocked content... > Click the Add button and paste the following into the highlighted area. Close the window. All avatars should now be blocked.

*image.php?u=*

 

Thanks! I didn't know you could block using wildcards and strings like that. That does the trick nicely.