How to make a Circle turn like a coin

hi hi

does any one how to make a Circle turn like a coin

make a movieclip call ball and copy this script on to it

onClipEvent(load){
turn=50;
}
onClipEvent(enterFrame){
this._xscale-=turn;
if(this._xscale>-100){
turn =- turn;
}else if(this._xscale<=100){
turn =- turn;
}
}

oh ok thanks man thanks a lot

Wilson,

How do you do it? it does no work for me. I created a mvie clip with a circle in it. Then i move the circle to scene 1 and paste tha actionscript above to scene 1 an i got all in of errors. Thanks