package code
{
	import flash.display.Sprite;
	import flash.display.MovieClip;
	import flash.events.Event;
	public class myClass extends Sprite //MovieClip
	{
		public function myClass()
		{
			this.addEventListener(Event.ENTER_FRAME,dichuyen);
		};
		private var tx = 10;
		private var ty=10;
		private function dichuyen(e:Event)
		{
			traibanh.x +=tx;
			if(traibanh.x > stage.stageWidth - traibanh.width
											   || traibanh.x<0)
				tx = -tx;
			traibanh.y+=ty;
			if(traibanh.y > stage.stageHeight - traibanh.height
			   									|| traibanh.y<0)
				ty=-ty;
		}
	};
}