Set Website To and From Maintenance Mode using Ajax, Jquery and PHP

To demo the system, please click on the On option of the button below to set this demo website to maintenance mode or click on the Off option of the button to remove the demo website from maintenance mode. Test Page

Please be informed that some one else may be some where at this very time trying to demo or test the system as well in case you set the system to maintenance mode and eventually the system is removed from maintenance mode.