title: Add a Game Loader for HTML5 game
body: <p>I am creating a simple game with HTML5 and JavaScript.</p>
  
  <p>Initially when the Game starts it takes some time to load images and sound.
  During this time the user has to wait and the screen looks unpleasant.</p>
  
  <p>So here's what i want to do</p>
  
  <ol>
  <li><p>Check loading status of images and sound.</p></li>
  <li><p>Increase % of loading as and when resources are loaded and respectively increase progress bar.</p></li>
  </ol>
  
  <p>I really don't have any key from where to start. Please Guide me through.</p>