// hint_active_div must be set from module
function hint_display(id) {     
    var div = document.getElementById(hint_active_div);
    div.style.display = "none";
    
    var div = document.getElementById(id);
    div.style.display = "block";
    
    hint_active_div = id;
}

function hint_validate_form() {
    if (document.forms.hint.friend_email.value != '') {
        hint_display("hint_sent");
        document.forms.hint.submit();
    } else {
        alert('Du skal udfylde din vens e-mail adresse');
    }
}

function hint_clear_form() {
    document.forms.hint.friend_name.value = '';
    document.forms.hint.friend_email.value = '';
    document.forms.hint.message.value = '';
}