Unloading .swfs ! need help!

programming flash
1

I can’t figure this out, I think i’m trying to remove the child to early. anyways, heres my code without any attempt to remove the child. thank you very much

stop();
about.buttonMode = true;
contact.buttonMode = true;
portfolio.buttonMode = true;

var request:Loader = new Loader();

about.addEventListener(MouseEvent.ROLL_OVER, overAbout);
about.addEventListener(MouseEvent.ROLL_OUT, outAbout);
about.addEventListener(MouseEvent.MOUSE_DOWN, downAbout);
function overAbout(MouseEvent):void{
    about.gotoAndPlay(2);
}
function outAbout(MouseEvent):void{
    about.gotoAndStop(1);
}
function downAbout(MouseEvent):void{
    
var request:Loader = new Loader();
request.load(new URLRequest ("AboutMe.swf"));
request.x = 0;
request.y = 0;
addChild(request)
gotoAndStop(2);

}



portfolio.addEventListener(MouseEvent.ROLL_OVER, overPortfolio);
portfolio.addEventListener(MouseEvent.ROLL_OUT, outPortfolio);
portfolio.addEventListener(MouseEvent.MOUSE_DOWN, downPortfolio);

function downPortfolio(MouseEvent):void{

        var request:Loader = new Loader();
        request.load(new URLRequest ("Portfolio.swf"));
        request.x = 0;
        request.y = 0;
        addChild(request)
    gotoAndStop(2);
}

function overPortfolio(MouseEvent):void{
    portfolio.gotoAndPlay(2);
}
function outPortfolio(MouseEvent):void{
    portfolio.gotoAndStop(1);
}

contact.addEventListener(MouseEvent.ROLL_OVER, overContact);
contact.addEventListener(MouseEvent.ROLL_OUT, outContact);
contact.addEventListener(MouseEvent.MOUSE_DOWN, downContact);

function downContact(MouseEvent):void{
var request:Loader = new Loader();
request.load(new URLRequest ("Contact.swf"));
request.x = 0;
request.y = 40;
addChild(request)
gotoAndStop(2);
}

function overContact(MouseEvent):void{
    contact.gotoAndPlay(2);
}
function outContact(MouseEvent):void{
    contact.gotoAndStop(1);
}