title: How to alter images with JavaScript?
body: <p>I wanted to build a JS applet for a user to customize his product color before ordering.</p>
  
  <p>An example can be seen here - <a href="http://www.lunacommerce.com/diy-ipone4-parts.php" rel="nofollow">http://www.lunacommerce.com/diy-ipone4-parts.php</a> </p>
  
  <p>I was unable to find the JS code in the page. Can anyone guide on how to go about to build this applet? I have a basic level knowledge of JS but I'm ready  to learn whatever is required for building this. </p>