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 ) {
                        
                        document.getElementById("bravo").innerHTML='<a href="http://konamicodesites.com/" target="_blank"><img src="img/konami.png" width="300px" border="0" alt="Bravo !"></a>';
                        

                        }
        }, true); 
}