On pages on which the Amazon.com ad appears, it is impossible to navigate to any part of the site using the mobile browser on Android, because touching the screen activates an invisible overlay from the ad which is much larger than the size of the ad (you can see its borders when you touch the screen), and when you touch any part of the screen it navigates to the ad instead. My guess is that the ad has some length and width properties on the code that are larger than the actual length and width of the image file. This only occurs with the different versions of the Amazon.com ad.