并联电路

package {
	import flash.display.MovieClip;
	import flash.events.MouseEvent;
	import flash.events.Event;

       /*
        *author : SinSoul 
        *blogs:　http://www.cnblogs.com/sinsoul
        */
	public class binlian extends MovieClip {
		public function binlian() {
			a1.addEventListener(MouseEvent.CLICK,dong);
			a2.addEventListener(MouseEvent.CLICK,dong);
			addEventListener(Event.ENTER_FRAME,onEvent);
		}
		function zhuan(e:Event):void {
			a.rotation=a.rotation+10;
		}
		function dong(e:MouseEvent):void {
			e.currentTarget.play();
		}

		function onEvent(e:Event):void {
			if (a1.currentFrame==1&&a2.currentFrame==1) {
				addEventListener(Event.ENTER_FRAME,zhuan);

			} else {
				removeEventListener(Event.ENTER_FRAME,zhuan);
			}
		}

	}
}