Load and Unload SWF

Hey,

This is the code I have so far, it opens the BonesInsideCastle.swf but it doesnt unload the first swf … Any idea’s ??

stop(); 
Castle.addEventListener(MouseEvent.MOUSE_DOWN, mouseDown); 
function mouseDown(event:MouseEvent):void {   
if (event.target == Castle) { 
     
var myrequest:URLRequest=new URLRequest("BonesInsideCastle.swf");      
var myloader:Loader=new Loader();  
myloader.load(myrequest);      
stage.addChild(myloader); } }// and the unloadFunction function  

var myloader:Loader=new Loader();  
myloader.unload(); 
myloader.addEventListener("Unloadme", unloadFunction);  
function unloadFunction(event:Event):void {  
// event.target is the loader reference.. so cast it as Loader   
Loader(event.currentTarget).unload(); }

Thanks in advance
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