Shadow of the dock

Behind the dock there is a shadow called WallpaperGradientPortraitBottom~iphone.png with a size of 1x237 px.

On the iPad there are two images, one for vertical orientation and the other for horizontal orientation. Their names are respectively: WallpaperGradientPortraitBottom~ipad.png and WallpaperGradientLandscapeBottom~ipad.png with a size of 1x509 px and 1x381 px.