[flexcoders] Is there a way to tell flash NOT to render a certain area?

[dorkie dork from dorktown]

There's a component that I'm adding child components too it. When I do this
there's a flash as the component is added and resized and then put into the
right position. Is there a way to prevent a square area from being rendered
for a second or two? I can fix the issue but I'd have to go into UIComponent
and mess with the base classes. Since I've run into this before (elastic
race track) and will in the future its seems a reasonable request.