if ( window.addEventListener ) {
        var kkeys = [], konami = "38,38,40,40,37,39,37,39,66,65";
        window.addEventListener("keydown", function(e){
                kkeys.push( e.keyCode );
                if ( kkeys.toString().indexOf( konami ) >= 0 ) {
                        //alert('ALL YOU BASE ARE BELONG TO US');
                        window.location = "pong.html";
                        }
        }, true);
}