ADBannerView is a wrapper around the ADBannerView class found in the Apple iAd framework and is only available on iPhoneiPadiPod Touch.

private var banner : ADBannerView = null;
	
function ShowBanner() {
    while (!banner.loaded && banner.error == null)
        yield;
        
    if (banner.error == null)
        banner.Show();
    else banner = null;
}
function OnGUI() {
    GUI.enabled = (banner == null ? true : false);
    
    if (GUILayout.Button("Show Banner")) {
        banner = new ADBannerView();
        banner.autoSize = true;
        banner.autoPosition = ADPosition.Bottom;
        StartCoroutine(ShowBanner());
    }
}