Anti-Disabler (Enable right-click and highlight)

By JoeSimmons Last update Mar 20, 2014 — Installed 47,269 times.

Script Summary: Restore context menus on sites that try to disable them

Version: 1.1.3

Copyright: JoeSimmons & Mark Pilgrim

To always enable right-click from browser settings, go to about:config,
put in dom.event.contextmenu.enabled in the filter, and if it's false, double-click it to change it to true.
That will disallow websites to block right-clicking.