Normally popup blockers work that way that they deny popups and allow users to permit them
for certain sites on a white list.

I am searching for the other way round: I want to permit popups for all sites except those which
I define in a black list.

How do I do this?

The black list handling should be either domain specific or allow wild cards.
So if I define www.abcd.com popups from all pages containing the pattern
(e.g. www.abcd.com\var\sub\index.html)

should be suppressed.

Michael