Callback function when user tap Ads

Hi,
Because I want to disable the Ad when user tap it.
And never show the Ad in the lifetime of that app or do something.
So, I need a callback function in the ads.show( adUnitType [, params] ) to perform what I want.
Is it possible?
Thanks a lot. [import]uid: 60193 topic_id: 13811 reply_id: 313811[/import]