Any ideas on how to track that?
Two things: 1) This is probably going to have to some kind of javascript spy that reports to a (php/asp/python/ruby) page for recording onUnload(). 2) You might read the Google AdSense legalese to see if they allow it, or if they provide it (maybe for a fee). What you want is access to their redirect page log. You also might look into Urchin and the ISP's that support it. -- Jared Farrish Intermediate Web Developer Denton, Tx Abraham Maslow: "If the only tool you have is a hammer, you tend to see every problem as a nail." $$