title: Chrome extension to dim the background
body: <p>i wanted to ask a question regarding this chrome extension called <a href="https://chrome.google.com/webstore/search/turn%20off%20the%20lights" rel="nofollow">Turn Off The Lights</a> , im aware of how to dim the background using jquery and css etc.. but what i am interested in knowing is how to get the current video playing from popular websites like YouTube, dailymotion etc.. before applying the jquery effects..?</p>