Edit Begins - 10-02-2017Development continues on GitHub. For always up-to-date version of this (now known as lepo-logout) visit the GitHub page,
lepo-logout on GitHubCheers!!!
Edit Ends - 10-02-2017
First VSIDO's default "~/.fluxbox/init" will need a slight modification,
Open it,
medit ~/.fluxbox/init
And change the following line,
session.screen0.allowRemoteActions: false
To,
session.screen0.allowRemoteActions: true
Save the file. Logout and login or restart fluxbox.
Add an extra package if it's not installed,
sudo apt-get install hicolor-icon-theme
Next Download the attached
exit-vsido.tar.gz archive. Extract the contents of archive into a directory and open that directory in terminal-emulator and run the following commands,
sudo cp vsido-exit /usr/local/bin/
sudo chmod 755 /usr/local/bin/vsido-exit
sudo cp logout_exit.png logout_logo.png logout_reboot.png logout_shutdown.png logout_suspend.png logout_window.png /usr/share/pixmaps/
Add a menu entry for vsido-exit. Test it

Cheers!!!