Đồ hoạ máy tính

soLuong = 70;
sW = Stage.width;
sH = Stage.height;
for (var i = 0; i < soLuong; i++) {
	_root.createEmptyMovieClip("snow", 0);
	snow = _root.attachMovie("sn", "sn"+i, i);
	with (snow) {
		_x = Math.random()*sW;
		_y = Math.random()*sH;
		_xscale = _yscale=_alpha=Math.random()*30+70;
	}
	this["sn"+i].ySpeed = Math.random()*3+0.5;
	this["sn"+i].aa = 0;
	this["sn"+i].ab = Math.random()*0.05+0.025;
	_root["sn"+i].onEnterFrame = function() {
		this._y -= this.ySpeed;
		this.aa += this.ab;
		this._x += Math.sin(this.aa);
		if (this._x>sW+5) {
			this._x = -5;
		} else if (this._x<0) {
			this._x = sW+5;
		}
		if (this._y>sH+5) {
			this._y = -5;
		} else if (this._y<-5) {
			this._y = sH+5;
		}
	}
}