var all = document.getElementsByTagName(“li”); var i for (i=0, max=all.length; i < max; i++) {
all[i].className = 'hidden';
} i = 0 $(document).keydown(function(e){
// left if (e.keyCode == 37) { window.location.href = document.getElementById("prev").href; } // right if (e.keyCode == 39) { window.location.href = document.getElementById("next").href; } // down if (e.keyCode == 40 && i < all.length) { all[i].className = 'vis'; i++; } // up else if (e.keyCode == 38 && i > 0) { i--; all[i].className = 'hid'; }
});