AS3 how to put the buttons always on top of the external swf in the code below?

Question

how to put the buttons always on top of the external swf in the code below?  I am  beginner use to as3, can someone help me?
thanks, for all!!
var Xpos:Number = 110;
var Ypos:Number = 180;
var swf:MovieClip;
var loader:Loader = new Loader();
var defaultSWF:URLRequest = new URLRequest("swfs/eyesClosed.swf");
loader.load(defaultSWF);
loader.x = Xpos;
loader.y = Ypos;
addChild(loader);
// Btns Universal function
function btnClick(event:MouseEvent):void {
removeChild(loader);
var newSWFRequest:URLRequest = new URLRequest("swfs/" + event.target.name + ".swf");
loader.load(newSWFRequest);
loader.x = Xpos;
loader.y = Ypos;
addChild(loader);
// Btn listeners
eyesClosed.addEventListener(MouseEvent.CLICK, btnClick);
stingray.addEventListener(MouseEvent.CLICK, btnClick);
demon.addEventListener(MouseEvent.CLICK, btnClick);
strongman.addEventListener(MouseEvent.CLICK, btnClick);

Answer 1

use:
var Xpos:Number = 110;
var Ypos:Number = 180;
var swf:MovieClip;
var loader:Loader = new Loader();
var defaultSWF:URLRequest = new URLRequest("swfs/eyesClosed.swf");
loader.load(defaultSWF);
loader.x = Xpos;
loader.y = Ypos;
addChild(loader);
// Btns Universal function
function btnClick(event:MouseEvent):void {
removeChild(loader);
var newSWFRequest:URLRequest = new URLRequest("swfs/" + event.target.name + ".swf");
loader.load(newSWFRequest);
loader.x = Xpos;
loader.y = Ypos;
addChildAt(loader,0);
// Btn listeners
eyesClosed.addEventListener(MouseEvent.CLICK, btnClick);
stingray.addEventListener(MouseEvent.CLICK, btnClick);
demon.addEventListener(MouseEvent.CLICK, btnClick);
strongman.addEventListener(MouseEvent.CLICK, btnClick);