function btnsF(event:MouseEvent):void {
     switch (event.target.name) {
          case "btn1" :
               changePage("http://www.flafolder.com/flash/applications/flash-web-site-template/");
               break;
          case "btn2" :
               changePage("http://www.flafolder.com/flash/tutorials/flash-clock-tutorial-video/");
               break;
          case "btn3" :
               changePage("http://www.flafolder.com/flash/tutorials/flash-animation-tutorial-video/");
               break;
     }
}
 
function changePage(mylink:String) {
 
     var url:String=mylink;
     var request:URLRequest=new URLRequest(url);
     navigateToURL(request);
}
 
btns.addEventListener(MouseEvent.MOUSE_DOWN, btnsF);