title: How to embed video like Firefox page?
body: <p>I just updated Firefox 3.5.
  When I visited <a href="http://en-gb.www.mozilla.com/en-GB/firefox/3.5/whatsnew/" rel="nofollow noreferrer">Firefox website</a> there is a video. When you click it, it enlarges and plays. I wonder if anyone knows how you can do it. Does it use any plug-in?</p>