title: Stop video in UIWebView
body: <p>In my iPad App I have a modal view (<code>UIViewController</code> with modal presentation style <code>UIModalPresentationPageSheet</code>)</p>
  
  <p>Inside the view is a UIWebView with a HTML page and an embedded YouTube-Video. If I start the video and close the view, the video doesn't stop. The audio continues and you can see a small "play icon" next to the "battery icon" in the status bar.</p>
  
  <p>How can I stop the video?</p>