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<!DOCTYPE html>
<html>
   <head>
     <title>Rubber bands with layered elements</title>

      <style>
         body {
             background: rgba(100, 145, 250, 0.3);
         }

         #canvas {
            margin-left: 20px;
            margin-right: 0;
            margin-bottom: 20px;
            border: thin solid #aaaaaa;
            cursor: crosshair;
            padding: 0;
         }

         #controls {
            margin: 20px 0px 20px 20px;
         }

         #rubberbandDiv {
            position: absolute;
            border: 3px solid blue;
            cursor: crosshair;
            display: none;
         }

      </style>
   </head>

  <body>
      <div id='controls'>
         <input type='button' id='resetButton' value='Reset'/>
      </div>

      <div id='rubberbandDiv'></div>

      <canvas id='canvas' width='800' height='520'>
         Canvas not supported
      </canvas>

     <script src='example.js'></script>
  </body>
</html>