Need to control scaling of a loaded swf when called from a container swf

Flash Professional 11 (build 11.0.2.489)

Problem: When a swf is loaded into a container swf, the called swf scales to fill the window. When the stand alone swf is played from an HTML or SWF, it does not scale and displays correctly. I have tried adjusting the stage dimensions, publish settings,etc to no avail.

My container swf has a Movie Clip called contentContainer and three buttons. The buttons simply addChild(selected swf) and removes the current swf child.

Is there a way to control scaling for a swf loaded within another swf?

The relevent code after calling the load functions is as follows:

function onCompletePreloading():void
{
    contentContainer.addChild(_swfClipsArr[0]);

    IntroButton.addEventListener(MouseEvent.CLICK, setContent);
    drilldownButton.addEventListener(MouseEvent.CLICK, setContent);
    EnterDatesButton.addEventListener(MouseEvent.CLICK, setContent);
}

function setContent(event:MouseEvent):void {
    var _swfToAdd:MovieClip;
    switch(event.target.name) {
        case "IntroButton":
        _swfToAdd = _swfClipsArr[0];
        break;     

        case "drilldownButton":
        _swfToAdd = _swfClipsArr[1];
        break;  

        case "EnterDatesButton":
        _swfToAdd = _swfClipsArr[2];
        break;
    }

    contentContainer.removeChildAt(contentContainer.numChildren-1);
    contentContainer.addChild(_swfToAdd);
    trace(_swfToAdd.customID);

}