Help to unload function

Question

I have a video background wherefrom I load another swf through a build in pop up. I have a button in the loaded swf from where I need the popup to unload and go back to the video background. Im not very experienced in flash and haven't build this myself so im a little lost. underneath is first the code which is in my video background and then the code in my loaded swf. hope someone can help. The highlighted bits is the ones where i have attempted to have the loaded swf to unload
Video Background:
import VideoBg;
var videos:Array=new Array('videos/bird_short.f4v','videos/kanin.f4v');
var num:uint=1;
var vid:VideoBg=new VideoBg(videos[index]);
var index:int = videos[Math.floor(Math.random()*videos.length)];
addChild(vid);
setChildIndex(vid,0);
videobtn.buttonMode = true;
pictures.visible=true; 
videobtn.addEventListener(MouseEvent.CLICK,toggleVideoF);
function toggleVideoF(e:MouseEvent):void{
index=(index+1)%videos.length;
vid.playF=videos[index];
videobtn.gotoAndStop(index+1);
stage.scaleMode=StageScaleMode.NO_SCALE;
stage.align=StageAlign.TOP_LEFT;
stage.addEventListener(Event.RESIZE, position);
stage.addEventListener(MouseEvent.CLICK, startIgen);
position(null);
function position(Event=null):void {
var SH=stage.stageHeight;
var SW=stage.stageWidth;
MinKnap.addEventListener(MouseEvent.CLICK, MinFunktion);
function MinFunktion(e:Event):void {
e.stopImmediatePropagation();
vid.ns.pause();
MinKnap.visible=false;
videobtn.visible=false;
popUp('start2.swf','swf',null,900,700,0);
pictures.addEventListener(MouseEvent.CLICK, picturesFunktion);
function picturesFunktion(e:Event):void {
e.stopImmediatePropagation();
vid.ns.pause();
MinKnap.visible=false;
videobtn.visible=false;
pictures.visible=false;
popUp('gallery_rabbit_picture.swf','swf',null,900,700,0);
function startIgen(Event):void {
MinKnap.visible=true;
videobtn.visible=true;
pictures.visible=true;
vid.ns.resume();
function popUp(con,typ,tit=null,wid=550,hei=400,alp=0.7):void {
ExternalInterface.call("Shadowbox.open",{content: con, player: typ, title: tit, width: wid, height: hei, options: {overlayOpacity:alp}});
function unloadFunction_rabit_gallery(event:Event):void {
    popUp.unload();
     MinKnap.visible=true;
     videobtn.visible=true;
     pictures.visible=true;
     vid.ns.resume();
popUp.addEventListener("UnloadMe", unloadFunction_rabit_gallery);
Loaded swf:
back03_btn.addEventListener(MouseEvent.CLICK,back_rabit)
function back_rabit(event:MouseEvent):void
    //MovieClip(parent.parent).gotoAndStop("frontpage2")
    parent.dispatchEvent(new Event("UnloadMe", true));

Answer 1

i don't use shadowbox but it looks like you're using javascript to open that popup so you'll need to use javascript to close it.   take a chance and try:
back03_btn.addEventListener(MouseEvent.CLICK,back_rabit)
function back_rabit(event:MouseEvent):void
ExternalInterface.call("Shadowbox.close");