var jq4u = 'jquery';
for (n = 0; n & lt; = 5; n++) {
$('#' + id).append('<div class="bigcolordiv key-' + jq4u[n] + '" style="background-color:blue;">' + jq4u[n] + '</div>');
}
$(W).bind('keydown', function (key) {
//jquery, 74, 81, 85, 69, 82, 89
var keycode;
if (key == null) {
keycode = event.keyCode;
} else {
keycode = key.keyCode;
}
$('#' + id + ' .key-' + String.fromCharCode(keycode).toLowerCase()).toggleClass('orangebg');
});