function ChangeMenufocus(id) {
    for (i = 1; i <= 8; i++) {
        if (i == id) {
            document.getElementById("nav_a0" + i).className = "nav_a0" + i + "  focus_a0" + i;
            document.getElementById("s_" + i).style.display = "block";
        } else {
            document.getElementById("nav_a0" + i).className = "nav_a0" + i;
            document.getElementById("s_" + i).style.display = "none";
        }
    }
}
function ChangeMenufocusOut() {
    for (i = 1; i <= 8; i++) {
        document.getElementById("nav_a0" + i).className = "nav_a0" + i;
        document.getElementById("s_" + i).style.display = "none";
    }
}