function check_service_form () {
    if (chk_filled("Your Preferred Date", document.service_form.schedule_date, true))
    if (chk_filled("Your Vehicle", document.service_form.model, true))
    if (chk_text("Your Name", document.service_form.firstname, true))
    if (chk_single_phone("Your Phone Number", document.service_form.dayphone, true))
    if (chk_email("Your Email", document.service_form.email, true))
        return true;
    return false;
}

function check_quote_form () {
    if (chk_num_len("Vehicle Year", document.quote_form.year, 4, true))
    if (chk_text("Vehicle Model", document.quote_form.model, true))
    if (chk_text("Your First Name", document.quote_form.firstname, true))
    if (chk_text("Your Last Name", document.quote_form.lastname, true))
    if (chk_single_phone("Your Phone Number", document.quote_form.dayphone, true))
    if (chk_email("Your Email", document.quote_form.email, true))
        return true;
    return false;
}