Tracking *shown* ads

as opposed to clicks

[runboard]

I have close to no Javascript knowledge.

I'd like to know whether it is possible to track the ads that are shown, at least the destination URL. I've seen JS scripts in other topics here that track (with success) the clicks on Adsense ads, but I'd rather like to know what ads are shown, and eventually filter out the non-relevant ones.

[anallawalla]

My Javascript is only slightly greater than yours but JS is a client-end technology, which means that it runs in the visitor's browser. What he/she sees is usually unique to them, esp if they are in another country where Google has a presence.

If you placed additional code on your page that could somehow see what ads the visitor saw, I think it would be called hostile code.