anchor.diff:  				}
   				$(document).keydown(function(e) {
   					switch(e.which) {
  -						case 37:
  -						arrowDown('left');
  -						break;
  -
   						case 38:
   						arrowDown('up');
   						break;
  
positive.code: 			<div class="unit1of2 joystick center">
  				<h2>Tell me where to go !</h2>
  				<div class="unit1of1 center">
  					<div id="top" class="pad top" data-direction="up">
  						<span>UP</span>
  					</div>
  				</div>
  
negative.code: 				var currentMove = null;
  				var moveTo = function(direction) {
  					currentMove = direction;
  					$('.pad').removeClass('pressed');
  					$('.pad.'+direction).addClass('pressed');
  					console.log('moving towards ' + direction);
  				}
  				var stop = function() {
  					currentMove = null;
  					$('.pad').removeClass('pressed');
  					console.log('stopping');
  				}
  				var arrowDown = function(direction) {
  