Auto Start Slideshow

To make a a YouTube slideshow auto start create a html page like below, host it somewhere and embed it into a page using an iFrame gadget.

<!DOCTYPE HTML PUBLIC  "-//IETF//DTD HTML Level 1//EN">
<html>
<head>
  <title></title>
  </head>
<body>
<iframe width="560" height="315" src="https://www.youtube.com/embed/_0W8aIH9IHI?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>
</body>
</html>