Anchor Mobile Banner Script

Hi, We need a piece of ad script that will allow us to place mobile anchor footer ads that will be anchored to bottom of the smartphone screen when our webpages are viewed in these devices. Simply explained this will be a banner that will be 50 px high and full length on the screen (responsive according to device) and we should be able to define the visual and the destination link for the ad. Actually you can see examples of what we want here: [login to view URL] Also the image here on the left: [login to view URL]