just saw this on
Offshore Clicks
The latest version of the personal firewall software "zone alarm" includes a function that inserts javascript on the surfers pages that stops popups. Taken from the AWI board is this piece of javascript code that we suggest adding to your pages to stop zonealarm from stealing your popups:
script language="JavaScript"
if (window.NS_ActualOpen){window.open = NS_ActualOpen;}
/script