Simple code request

programming flash
1

I am just restarting my flash adventures and am trying to learn AS3.

I can a real quick code request. I am trying to make a MC bounce off the sides of the stage.

When I use the following code, the MC gets stuck going -2 then +2 at the edge of the stage.

addEventListener(Event.ENTER_FRAME, starMove);

function starMove(e:Event):void {
if (star_mc.x<stage.stageWidth-33) {
star_mc.x+=2
} else {
star_mc.x-=2
}
}

How do I get it disregard the first part of the if/else and then go the other direction?

I know this is a really beginer question, but it would really help me out.

Thanks!