function vbfv()
{
    var name = document.bfv.name;
    var email = document.bfv.email;
    var phone = document.bfv.phone;
    var nationality = document.bfv.nationality;
    var arriving_from = document.bfv.arriving_from;
    var trip = document.bfv.trip;
    var number_of_travelers = document.bfv.number_of_travelers;
    var verif_box = document.bfv.verif_box;

    if (name.value == "")
    {
        window.alert("Please enter your name.");
        name.focus();
        return false;
    }
    
    if (email.value == "")
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }
    if (email.value.indexOf("@", 0) < 0)
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }
    if (email.value.indexOf(".", 0) < 0)
    {
        window.alert("Please enter a valid e-mail address.");
        email.focus();
        return false;
    }

    if (phone.value == "")
    {
        window.alert("Please enter your phone number.");
        phone.focus();
        return false;
    }
    if (nationality.selectedIndex < 1)
    {
        alert("Please enter your naitonality.");
        nationality.focus();
        return false;
    }
    if (arriving_from.selectedIndex < 1)
    {
        alert("Please select the country you are arriving from.");
        arriving_from.focus();
        return false;
    }
    if (trip.selectedIndex < 1)
    {
        alert("Please select a desired trip.");
        trip.focus();
        return false;
    }
    if (number_of_travelers.selectedIndex < 1)
    {
        alert("Please select a number of travelers.");
        number_of_travelers.focus();
        return false;
    }
    if (verif_box.value == "")
    {
        window.alert("Please enter the number.");
        verif_box.focus();
        return false;
    }
    return true;
    }