Normally I just write my own JavaScript code to achieve this affect. I find it much more rewarding, as you can do certain dramatic effects that otherwise would not be achievable. But if you don't feel like writing your code, the shortcut way to achieving the same affect, is after the file has been exported, look within the
HTML code, you should see the
swf width and height somewhere along their, change them both to 100%. That will do the same thing, not as good as writing a custom JavaScript file that works for that document though. Let me know if I sound confusing or if you need any other form of help...Thanks!!