//JS¶þ¼¶µ¼º½À¸
function fetch_object(idname) {
    var my_obj = document.getElementById(idname);
    return my_obj;
}
function jsdhl_nav(obj) {
    for (i = 0; i <= 8; i++) {
        var sub_nav = fetch_object("czjs_nav" + i);
        var sub_nav_index = fetch_object("czjs_nav" + i);
        sub_nav_index.style.display = "none";
        if (obj == i) {
            sub_nav.style.display = "block";
        }
        //        else if (obj == 1 || obj == 2) {
        //            sub_nav = fetch_object("czjs_nav" + 0);
        //            sub_nav.style.display = "none";
        //        }
        else {
            sub_nav.style.display = "none";
            sub_nav = fetch_object("czjs_nav" + 0);
            sub_nav.style.display = "block";
        }
    }
}