HTML Snowflake Fractal

<html>
  <head>
    <script type="text/javascript" src="fractal.js"></script>
  </head>

  <body onload="run('canvas', 'next', 'restart')">
    <canvas id="canvas" width=500 height=500>
      Your browser does not support the &lt;canvas&gt; element
    </canvas>

    <input id="next" type="button" value="Next iteration" />
    <input id="restart" type="button" value="Restart" />
  </body>
</html>