anchor.diff:  
   // Old and new keyboard states
   var keysDown = {};
  -var oldKeysDown = {};
   
   addEventListener("keydown", function (e) {
   	keysDown[e.keyCode] = true;
  
positive.code: 
  var input = function(dt)
  {
  	if(38 in keyDown)
  	{
  		//  Do something when you press up
  
  		
  	}
  };
  
  //  TODO: Wrap image in class that knows if its loaded
  
negative.code: }
  
  
  //**********************  Move to utility js
  var toMilliseconds = function(seconds)
  {
  	return seconds/1000;
  };
  //**********************
  
  
  var main = function()
  