Q. How do I disable the pop-up blocker in Firefox on a Macbook?

Here are the steps - or if you prefer, you can watch the video below for a screencast.

1. Click on the Firefox menu in the top left corner and choose Preferences.
2. From the left menu, choose the Privacy & Security option.
3. Scroll down to the Permissions section. 
4. Uncheck the box next to Block Pop-Up Windows