Turn Off the Lights for Firefox lets users obscure everything on their screen except the Flash or HTML5 video they're watching. Available for IE and Chrome.

Turn Off the Lights for Firefox is a browser extension that lets users obscure everything on their screen except the Flash or HTML5 video they're watching, minimizing distractions and making for a more pleasant viewing experience. A lamp icon is displayed in the browser menu bar or in the omnibox, and users click on the gray lamp icon to make the area surrounding the video fade. Clicking outside the video restores the rest of the screen. Users can adjust the opacity of the screen blocking and select a color other than black if desired.Available for IE and Chrome.

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