Bouncing ball

Hi people. Can anyone tell me how to go about programming a bouncing ball, and maybe show me some example code please. I have tried, but i just can't seem to do it.

Thankyou
Devil

near the bottom

You must calibrate the ball setting like this :

If BallPX>=800 then
MovementX=-MovementX
endif

If BallPX<=0 then
MovementX=-MovementX
endif

If BallPY<=0 then
MovementY=-MovementY
endif

If BallPY>=600 then
MovementY=-MovementY
endif

BallPx=BallPx+MovementX
BallPy=BallPy+MovementY

DrawImage MyBall,BallPx,BallPy

I hope this help you :)

Thankyou very much filax and tony g. I really appriciate both your help.

Thanks again :)