whyisthesheep

var konamiCode = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65, 13];
var konamiCodeIndex = 0;

document.onkeydown = function (e) {
    if (e.keyCode == konamiCode[konamiCodeIndex]) {
        konamiCodeIndex++;
    } else {
        konamiCodeIndex = 0;
    }