* added an alternate fullscreen method. With this method, _nothing_ is allowed

* added an alternate fullscreen method. With this method, _nothing_ is allowed
to be displayed on top of the video (especially not taskbars, etc...).
Of course this can also be annoying sometimes, this is why it's an option.

PS: does anybody know how not to propagate the Ctrl-Alt-Tab key event to the
window manager. I tryed XChangeWindowAttributes with do_not_propagate_mask but
it doesn't seem to work.