// MovieClip
// 第1フレームアクション
trace("initialize "+this);
var movx = 8;
this.onEnterFrame = function() {
	if (this._x>640) {
		this._x = 640;
		movx *= -1;
	} else if (this._x<0) {
		this._x = 0;
		movx *= -1;
	}
	this._x += movx;
};