Loading external mc and go back btn not working

hi everyone - all you AS geniuses:)

I have this problem I just cant solve and tried reading loads of threads -

I have an Index page (as2) - I press the gallery button and go to the as3 gallery - I then press home (index) and go back - but… - all the buttons won’t direct me when i press them again… - I really dont get it -

code for home button -

var newLoader:Loader = new Loader();
var fileIndex:URLRequest = new URLRequest(“index.swf”)
home.addEventListener(MouseEvent.CLICK,loadIndex);
function loadIndex(event:Event):void{
newLoader.load(fileIndex);
newLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS,swfLoadedNow);
}
function swfLoadedNow(event:ProgressEvent):void {
if (event.bytesLoaded == event.bytesTotal) {
addChild(newLoader);
}
}

I really really hope some of you master minds can help me out .

best regards psyme