Action Script 3.0 (Loading file from outside the swf)

/*Mouse.hide();
stage.addEventListener(Event.ENTER_FRAME,ff);
function ff(e:Event):void{
dd.x=mouseX;
dd.y=mouseY;
}*/

stage.scaleMode = StageScaleMode.NO_SCALE;


dd.addEventListener(MouseEvent.ROLL_OVER,btn1Over);
dd.addEventListener(MouseEvent.ROLL_OUT, btn1Out);
dd.addEventListener(MouseEvent.CLICK, btn1Click);

function btn1Over(event:Event):void {
    dd.gotoAndPlay("over");
}

function btn1Out(event:Event):void {
    dd.gotoAndPlay("out");
}

function btn1Click(event:Event):void {
    dd.gotoAndPlay("click");
}

var loade:Loader=new Loader();

dd.addEventListener(MouseEvent.CLICK,mm);
dd1.addEventListener(MouseEvent.CLICK,f1);
dd2.addEventListener(MouseEvent.CLICK,f2);
dd3.addEventListener(MouseEvent.CLICK,f3);

function mm(e:MouseEvent):void {
    var ui:URLRequest=new URLRequest ("cat-buttons.jpg");
    loade.load(ui);
    uiloader.addChild(loade);
}