anchor.diff:      }
   }
   
  -// puts video into delegated space on button press --> (snapshot)
  +// puts image frame into delegated canvas
   
   </script>
   
  
positive.code:     var video  = document.getElementById(videoId);
      var output = document.getElementById('output');
      var canvas = capture(video, scaleFactor);
      //     canvas.onclick = function(){
      //         window.open(this.toDataURL());
      //     };
      snapshots.unshift(canvas);
      output.innerHTML = '';
      for(var i=0; i<4; i++){
  
negative.code:     return canvas;
  }
  
  // captures an image frame from video
  
  /**
   * Invokes the <code>capture</code> function and attaches the canvas element to the DOM.
  