function settab(name, cursel, n)
{
    for (i = 1; i <= n; i++)
    {
        var menu = document.getelementbyid(name + i);
        var con = document.getelementbyid("con_" + name + "_" + i);
        menu.classname = i == cursel ? "hover" : "";
        con.style.display = i == cursel ? "block" : "none";
    }
}