Flash AS3 制作文字飞出动画

str=txtInfo.text;
var btnReFly:TextField=new TextField();
btnReFly.text="btnReFly";
btnReFly.x=450;
btnReFly.y=300;
btnReFly.selectable=false;
btnReFly.addEventListener(MouseEvent.CLICK,btnReFlyClk);
addChild(btnReFly);
}
function btnReFlyClk(_evt:MouseEvent){
clearText (_evt.target)
init();
}
function clearText (_mc) {
removeChild (_mc);
}