Move Object Then Stop In Flash How To Make A Wall In Flash MX?

How to make a wall in Flash MX? - move object then stop in flash

I experimented with a course of action today, I received a number of things to work. I move an object when you use the arrow keys. But how do you stop if he hits a wall "" I do not want to jump (I met a lot of hit-examination that bounced off the wall, not what I'm looking for though.) I am looking for a way to stop to be fair to the other object. And it was really only one of the coordinates, you can define a command to disable the icon of the movement?
Preferably I would like to publish all responses in ActionScript
So please tell me what does the script.