my index.html
<html>
<head>
  <title>Turtle Graphics</title>
  <link rel='stylesheet' href='styles.css'>
  <script src='globals.js'></script>
  <script src='my.js'></script>
</head>
<body onResize='resize();'>
  <div id='main'>
    <div>
      <canvas id='c'></canvas>
    </div>
    <div id='buttons'>
      <div onClick='reset(); g_running=true; spirals();'>SPIRALS</div>
      <div onClick='reset(); g_running=true; polys();'>POLYGONS</div>
      <div onClick='reset(); g_running=true; starry();'>STARS</div>
      <div onClick='reset(); g_running=true; roses();'>ROSES</div>
      <div onClick='slow();'>SLOW</div>
      <div onClick='fast();'>FAST</div>
      <div onClick='stop();'>STOP</div>
      <div onClick='reset(); tree();'>TREE</div>
      <div onClick='reset(); wow()'>WOW!</div>
    </div>
  </div>
  <script>setup();</script>
</body>
</html>