var bannerView = GADBannerView(frame:CGRectMake(0, 20, 320, 50))

let bannerView = GADBannerView(adSize: kGADAdSizeSmartBannerPortrait)

let bannerView = GADBannerView(adSize: kGADAdSizeSmartBannerPortrait)
bannerView.frame = CGRect(x: 0.0,
                          y: UIApplication.sharedApplication().statusBarFrame.size.height,
                          width: bannerView.frame.width,
                          height: bannerView.frame.height)

let bannerView = GADBannerView(frame:CGRectMake(0, UIApplication.sharedApplication().statusBarFrame.size.height, CGSizeFromGADAdSize(kGADAdSizeSmartBannerPortrait).width, CGSizeFromGADAdSize(kGADAdSizeSmartBannerPortrait).height))

bannerView.frame = CGRectMake(0, 20, bannerView.frame.width, bannerView.frame.height)