Instructions:
1- Click the Firefox icon in the upper left corner of your browser.
2- Hover over Options.
3- Click Options.
4- Click Content tab.
3- Check Block pop-up windows to enable pop-up blocker.
4- Ucheck Block pop-up windows to disable pop-up blocker.
5- Click OK.

How to Disable or Enable Pop-up Blocker in Firefox
[ Ссылка ]

свернуть