We configure Raspbian Wheezy to automatically launch Midori and Unclutter when the desktop environment boots, and to keep Midori launched in fullscreen should it crash. Replace "concerto.foo" and "screennumber" with the appropriate information for your setup. Unclutter hides the mouse when Midori is un full screen mode. Hope this helps! - Chris
%sudo mkdir /scripts
%sudo nano /scripts/signage.sh
#!/bin/bash
while true; do midori -e Fullscreen -a
http://concerto.foo/frontend/screennumber;sleep 5s; done
%sudo nano /etc/xdg/lxsession/LXDE
@lxpanel --profile LXDE
@pcmanfm --desktop --profile LXDE
@xscreensaver -no-splash
@unclutter
@/scripts/signage.sh