Notification message tray

Cinnamon desktop environment has a rather nifty idea of a tray in the systray that holds all notification messages till their read and cleared, and then becomes empty. How can I have the same thing in fluxbox please? I think it needs to be done via a bash script but I haven't the faintest idea where to start! This would be used on a debian testing machine under fluxbox desktop environment, but would hopefully be usable under ones like razor-qt as well.