Behind The Overlay v0.2.1 
After the success of Chrome version, here is the Firefox version !
To see a video example https://www.youtube.com/watch?v=0Fc5q-Ba8S8
Have you ever been to a website that displays an overlay and masks the content with a transparent background before seeing its content ?
This extension allows you to close easily those overlays.
- It actives only when you click its button
- Extremely lightweight
- Keyboard shortcut Cmd+Shift+X (Mac/OsX) or Ctrl+Shift+X (Windows/Linux)
And it works even with overlays without a close button !
For the lastest news or feedbacks please follow https://twitter.com/Behind_Overlay