Now you have option to get fullscreen mode in browser player too.Already stand-alone player has this implementation.now they have added new actionscript that will work in both stand-alone and browser player, and a new HTML parameter
allowFullScreen
to enable the fullscreenmode
The fullscreen mode initiated through Actionscript and you can terminate through Actionscript or by the user switching focus to another window.
But the problem is that You con't enter the text in textbox while in fullscreen mode.your keyboard input and key-related actionscript would be disabled while in fullscreen,except key borad shortcut that take user out of fullscreen mode.
To enable the fullscreen mode you have to
install 9,0,28,0 or greater of Flash Player.