(fucntion(window, document, createModules, undefined) {
  var btn = document.getElementById('btn');
  btn.addEventListener("click", function(){
    drawModule.init();
  });

  	document.onkeydown = function(event) {

          keyCode = window.event.keyCode;
          keyCode = event.keyCode;

          switch(keyCode) {

          case 37:
            if (direction != 'right') {
              direction = 'left';
            }
            console.log('left');
            break;

          case 39:
            if (direction != 'left') {
            direction = 'right';
            console.log('right');
            }
            break;

          case 38:
            if (direction != 'down') {
            direction = 'up';
            console.log('up');
            }
            break;

          case 40:
            if (direction != 'up') {
            direction = 'down';
            console.log('down');
            }
            break;
            }
        }



})(window, document, createModules);