walk off then on stage

[ramart]

I have my movie clip walk off the left side of stage and come back on the right of the stage. but I cant get it to walk off the right and come back on the left can any one give advise please. this is what I have so far

onClipEvent(load) {
var direction = "left";
var speed = 10 ;
}

onClipEvent(enterFrame) {
if(Key.isDown(Key.LEFT)){
this.direction = "left";
this._x -= speed;
this.gotoAndPlay('walkleft');
if(this._x<0-this._width)this._x=Stage.width;
} else if(Key.isDown(Key.RIGHT)) {
this.direction = "right";
this._x += speed;
this.gotoAndPlay('walkright');
//if(this._x<0+this._width)this._x=Stage.width;
} else {

this.gotoAndPlay('wait'+this.direction);
}
trace(this._x);
}

[RubenFlash]

Changes are in blue:

onClipEvent (load) {
    var direction = "left";
    var speed = 10;
}

onClipEvent (enterFrame) {
    if (Key.isDown(Key.LEFT)) {
        this.direction = "left";
        this._x -= speed;
        this.gotoAndPlay('walkleft');
        if (this._x<0-this._width) {
            this._x = Stage.width;
        }
    } else if (Key.isDown(Key.RIGHT)) {
        this.direction = "right";
        this._x += speed;
        this.gotoAndPlay('walkright');
        if(this._x>Stage.width){
            this._x=-this._width;
        }
    } else {

        this.gotoAndPlay('wait'+this.direction);
    }
    trace(this._x);
}

[ramart]

thanks very much Ruben I will give that a go after work