put fscommand("showmenu", true); on your main timeline...
This works when you open your movie in your local player.

To use fullscreen on the web:
Put this on your html page:


<Script Language="JavaScript">
function load() {
var load =
window.open('YourMovie.swf','','scrollbars=no,menubar=no,fullscreen=yes,resizabl
e=yes,toolbar=no,location=no,status=no');
}
</Script>

Make a picture or text with this as link:

javascript:load()


et voila...