I'm using Firefox with AdBlock so I can't find an advert to experiemnt on but I believe right clicking the add and and selecting "Open in new tab" should do the trick - if you really want to see an advert.
------------------------------Be it ever so humble, there’s no place like 127.0.0.1 Reply to Saga Lout
The point is that on the other day when I clicked on in an ad it opened at the same page. However I had clicked on several ads before, and all of them opened in a new tab. Perhaps it was only that particulary ad, eh?