where in vbulletin calendar template to add adsense

In the picture above, there is some dead space between the 2 monthly calendars (on the left) and the navigations (on the right). I would like to make use of that space by inserting a rectangular banner there.

Does anybody know where in the calendar template should the adsense code be added?

thanks

 

have you tried the adsense codes as a calender item . it may give you great results