[рони]

sotik,

function get(n,d)
{
    var krug = ["Фа","До","Соль","Ре","Ля","Ми","Си"];
    d ==  "бемоль" && krug.reverse();
    return krug.splice(0, n)
}
alert(get(2));
alert(get(2, "бемоль"));