Swfs scaling independently in browser

I’ve seen a flash movie whereby there are a couple of toolbars that remain at 100% when resizing the browser window, and then a main content area that scales in proportion when resizing the browser.

However, when I create an swf that is set to Stage.scaleMode = “noScale” and then load in the main content swf which is set to “showAll”, the whole movie is affected and scales when resizing the browser.

Therefore, could anyone shed light on how to achieve this effect - to keep some loaded movies from scaling, and others to scale proportionally?

Many thanks for your help