Updated to add language file.
Updated to show modal only once per session.
A simple add-on to let detect if user has Ad-blocker enabled on his browser. It will display a message in a modal window.
It is a no core change add-on and uses site-wide hooks. Simply copy all the files over. There is nothing to turn on.
It is done using hook’s so can only be installed on sites with hook’s available.
It have been tested on Phoenix 184.108.40.206