Touring Pong Paddle Bouncing Problem

[Schaef]

I have two paddles in my game that are 100 pixels high and 10 pixels wide. I cant figure out how to get the ball to bounce off of the paddles though. Its easy to get it to bounce of the top and bottom because the coordinates dont change. Im not sure if i can set my paddles as a variable themself or something.. if u have a solution plz send it.