Viewing Live download?

Hey, im having some trouble with my preloader. When i simulate the download as the preloader is loading you can also see the content from the external .swf file loading with it which i dont want, i want the content all to start playing once the download has completed not during the download.
Does anyone know why this is? heres my code for the preloader.

Code:

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var myMCL:MovieClipLoader = new MovieClipLoader();
var myListener:Object = new Object();

myMCL.addListener(myListener);

myListener.onLoadProgress = function(target_mc:MovieClip, bytesLoaded:Number, bytesTotal:Number) {
        var loaded:Number = Math.round((bytesLoaded/bytesTotal) * 100);
        progressBar.gotoAndStop(loaded);
}

myListener.onLoadInit = function (target_mc:MovieClip) {
                                                                progressBar._visible = false;                                               
}

myListener.onLoadStart = function (target_mc:MovieClip) {
        progressBar._visible = true;
}

myMCL.loadClip("work.swf","container");

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