Flash AS3 个性的旋转圆形网页导航

function buildMenu(){
 var btn:myButton;
 var angle:int=360/menu_items.length;
 for (var i:int = 0; i< menu_items.length; i++){
  btn = new myButton();
  btn.buttonMode=true;
  btn.labelBtn.text = menu_items[i];
  btn.mouseChildren=false;
  menu.addChild(btn);
  TweenLite.to(btn,2,{rotation: -i*angle,ease:Bounce.easeOut});
 }
}
menu.addEventListener(MouseEvent.CLICK,clickHandler );
function clickHandler(e:MouseEvent ):void{
 // TO DO ...
 trace(myButton(e.target).labelBtn.text);
}