So I came up with this method to control a card to the bottom or top but I'm not sure if it is original.
http://www.youtube.com/watch?v=COL2C3yL9E8&feature=c4-overview&list=UU3a621OmHz4en7ZA2OjUdGQ
http://www.youtube.com/watch?v=COL2C3yL9E8&feature=c4-overview&list=UU3a621OmHz4en7ZA2OjUdGQ