Loaded swf does not recognize stage of parent correctly

Question

I have an issue that is probably easily solved, but my attempts to solve it have been frivolous. 
I am creating a “lightbox” to display artwork, but I have come across a slight hiccup.
I am executing the lightbox functionality from a swf file that is loaded by a parent swf.  For testing purposes, when the lightbox button is clicked, the image should fill the entire stage.  Even though both the loaded swf and the parent swf recognize the same stage dimensions at all times(validated through tracing statements) and the lightbox image is positioned to the top/left corner of the stage, the image instead aligns to the top/left corner of the loaded swf.  And if the stage is resized after the lightbox image is displayed, the container MC (which is located in the parent swf and centers all the site’s content) re-aligns to the top/left corner of the stage . 
To better illustrate these points, click the link below to see some screenshots with captions:
http://newsite.katech.com/assets/images/lightbox_screenshots.jpg
Also, here is the code applicable code from the loaded swf:
stop();
picture.visible = false;
picture.x = 0;
picture.y = 0;
picture.width = stage.stageWidth;
picture.height = stage.stageHeight;
lightboxBtn.buttonMode = true;
trace("embedded swf says the stage is " + stage.stageWidth + " X " + stage.stageHeight);
function onStageResize(event:Event):void
                trace("embedded swf says the stage is " + stage.stageWidth + " X " + stage.stageHeight);
                picture.x = 0;
                picture.y = 0;
                picture.width = stage.stageWidth;
                picture.height = stage.stageHeight;
stage.addEventListener(Event.RESIZE, onStageResize);
function showImage(event:MouseEvent):void
                picture.visible = true;
lightboxBtn.addEventListener(MouseEvent.CLICK, showImage);
And for the applicable code from the parent swf:
stop();
trace("MAIN swf says the stage is " + stage.stageWidth + " X " + stage.stageHeight);
//aligns site content to center of stage
function onStageResize(event:Event):void
                trace("MAIN swf says the stage is " + stage.stageWidth + " X " + stage.stageHeight);
                container.x = (stage.stageWidth/2) - (container.width/2);
                container.y = (stage.stageHeight/2) - (container.height/2);
                if (container.x < 0)
                                container.x = 0;
                if (container.y < 0)
                                container.y = 0;
stage.addEventListener(Event.RESIZE, onStageResize);
How can I get the loaded swf to display the lightbox image correctly in respect to the parent swf?  What am I doing wrong?

Answer 1

I have still yet to resolve this issue on my own, if anyone could point me in the right direction, it would be greatly appreciated.
Also, when I updated my previous post something "screwy" happened with the edit, so I went back and corrected the mistakes in case it made things unclear.
Thanks.