/* With thanks to InstantShift.com */

if ( window.addEventListener ) {
  var state = 0, konami = [38,38,40,40,37,39,37,39,66,65];
  window.addEventListener("keydown", function(e) {
    if ( e.keyCode == konami[state] ) state++;
    else state = 0;
    if ( state == 10 )
      alert('You should try that in Instant Elevator Music 2 when it comes out...');
    }, true);
}