Originally Posted by Balalsubturfyooj

I think unblockable is somewhat unreasonable... the issue of a popup on exit is a fairly simple java script... Vista from what I can see blocks 100% of popups, but thats only been my experience...

A possible solution is to create clear gifs as spacers and link them to your "popup" html page putting such into a new window and by sizing the window; the java script will activate on mouseover and would not require your visitor as to actually click on the link, but rater just pass the mouse over the clear gif "transparent" as to activate your "popup"