Running X without a window manager?

Hi, I want to set up a script that is run from the console and launches an X server, and an X application that runs full-screen (maximised?), preferably without window decorations... And then shuts down X when the application terminates. For example... Having a script like 'run_mozilla', which I run from a console without X running, and it gives me one big mozilla window, and then returns me to the console again when it's finished. Is such a thing possible? Simon -- This message has been scanned for viruses and dangerous content, and is believed to be clean.