Hide Cocoa-Window Titlebar

FROM : Aya Koshigaya
DATE : Tue Jan 06 21:31:31 2009

Hi,

I'm developing a mediaplayer-like app that supports fullscreen like 
QuickTime Player.
To enter Fullscreen I need to toggle the window-style to a borderless-
window, is there any way to do this?

So, in Windowed Mode I want to have the normal Window-Titlebar and in 
fullscreen without.. :)

Thanks,
Aya