function email(user, domain, top)
{
    var s = user + '@' + domain + '.' + top;
    return s;
}

function mailto(name, user, domain, top)
{
    var s = email(user, domain, top);
    document.write('<a href="mailto:' + s + '" title="' + name + '">' + s + '</a>');
}

function mailtoname(name, user, domain, top)
{
    var s = email(user, domain, top);
    document.write('<a href="mailto:' + s + '" title="' + name + '">' + name + '</a>');
}