i = 0;
soLuong = 100;
function createStar() {
	_root.attachMovie("star", "star"+i, i);
	scale = random(60)+10;
	_root["star"+i]._x = Math.random()*Stage.width;
	_root["star"+i]._xscale = scale;
	_root["star"+i]._yscale = scale;
	_root["star"+i].yspeed = Math.random()*3+1;
	_root["star"+i].onEnterFrame = function() {
		if (this._y>Stage.height) {
			this._x = Math.random()*Stage.width;
			this._y = 0;
		} else {
			this._y += this.yspeed;
		}
	};
	i = (i<soLuong) ? i+1 : 0;
}
setInterval(createStar, 100);