var code = [], lulz = "38,38,40,40,37,39,37,39,66,65";
$(document).keydown(function(e) {
  code.push( e.keyCode );
  if ( code.toString().indexOf( lulz ) >= 0 ){
    $(document).unbind('keydown',arguments.callee);
    window.open('http://thestormseeker.com/unknown.htm')         
  }
});