[openbox] Xcompmgr works for me

[Aaron Gyes]

> What I want to say is when xcompgr creates another screen, does compositing 
> off-screen and then draws to that screen. Of course all of the apps you 
> already started had been mapped to the old screen and dissappear when you 
> switch to the new one.

It doesn't happen with other window managers. I've tried TWM and
Metacity. When you run xcompmgr, everything flashes, and then becomes
shadowed. On openbox everyting disappears.

--Aaron