It doesn't work as you promised Rated 3 out of 5 stars

TRY this.....you need to click down to trigger the javascript build-in html:
http://www.jandown.com/link.php?ref=BjNNNFEc7h

1. it didn't block that pop-up by default....
2. add a filter rule, i want to block any pop-up from the ORIGINAL site, not the site it pop-up, which can change from time to time(in this case, i want no more pop-up from jandown.com, not www.139flash.com)
****PREVIOUS*****
does the add-on block popup like this script in html:
</style>
<script language="JavaScript">
<!-- Begin
function openpage() {
window.open('http://www.example.com','','scrollbars=1,resizable=1,width=1024,height=768').blur();
window.focus();
}
// End -->
</script>

This review is for a previous version of the add-on (0.1.8).  This user has other reviews of this add-on.

You can block all pop-ups from that site by adding "www.jandown.com" to the blacklist of this addon (remember the "www." because jandown.com and www.jandown.com are different domains. You can also add *jandown.com). That feature was just added and wasn't there when you sent the previous message so you may not have noticed it yet.