Dynamic sizing but maintaining aspect ratio

Hey all,

So i have a Flash app that I want to scale according to the browser size.

In the Publish settings, I have the Dimensions set to Percent. Width and Height at 100% and Scale at Exact Fit.

If i open my app on a monitor at 1024 by 760 it scales to that size. If i open it on a 1280 by 1024, it scales acordingly.

However, when I open it on a widescreen monitor, then it scales to fill the whole thing and I get Horizontal stretching. Is there any way to have it still scale up but maintain the aspect ratio of the app?

Thanks!