anchor.diff:  //  Creating canvas
  -var canvas = document.getElementById('canvasGame');
  -var ctx = canvas.getContext("2d");
  -document.body.appendChild(canvas);
  +var ctx = document.getElementById('canvasGame').getContext('2d');  
   
   //  Loading images
   var img = new Image();
   img.src = '<%= asset_path 'images/seal.jpg' %>'
   /* more info: http://stackoverflow.com/questions/7381041/url-of-images-in-javascript-code-using-rails-3-1-asset-pipeline */
  -
  -var x = 0;
  -var y = 0;
   
   var update = function(dt)
   {
  
positive.code: }
  
  
  var toMilliseconds(seconds)
  {
  	return seconds/1000;
  };
  
  
  
  var main = function()
  
negative.code: 
  var input = function(dt)
  {
  
  };
  
  //  TODO: Wrap image in class that knows if its loaded
  