Ads displayed on screen or content?

My screen content is much larger than the 3GS screen by almost double, so the content is scaled down. But when I do an "ads.show" it looks like the ad shown is not placed in the content because its not scaled at all. Is that how it's supposed to be? If that is true, how do you get the screen resolution? I don't see any functions for it except for getting the original content size.

Thanks!

views:1351 update:2011/11/17 15:37:03
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