function setmenuitem(mi)
{
    mi.className = "menuitem-on";
}

function validate(f)
{
    var name = f.name.value.replace(/^ +/, "").replace(/ +$/, "");

    if (name == "")
    {
        alert("You must enter your name");
        return false;
    }
    
    var email = f.email.value.replace(/^ +/, "").replace(/ +$/, "");
    
    if (email == "")
    {
        alert("You must enter your email address");
        return false;
    }

    var subject = f.subject.value.replace(/^ +/, "").replace(/ +$/, "");
    
    if (subject == "")
    {
        alert("You must enter a subject");
        return false;
    }

    var message = f.message.value.replace(/^ +/, "").replace(/ +$/, "");
    
    if (message == "")
    {
        alert("You must enter a message");
        return false;
    }
    
    return true;
}