Annoying pop-up windows that SM/Multizilla doesn't seem to be blocking

Hi,

The site Ziddu.com uses an annoying javascript pop-under pop-up thing
that seems to be able to get around Seamonkey/Multizilla's pop-up
blocker. Even with Adblock Plus and everything else I can't figure out
how to make it stop (short of disabling javascript entirely). For an
example go to a non-existing page such as
http://www.ziddu.com/afjhsfsafa and view source, the "popurl" function
is inline at the bottom of the page. Has anybody got any ideas how to
block this?