<script>
            function sendMail() {

                var email = document.getElementById("email").innerHTML;
                alert(email);
                var name = document.getElementById("name").innerHTML;
                alert(name);
                var program = document.getElementById("program").innerHTML;
                alert(program);

                // alert("I am an alert box!");
                $.post('mail.php');
            }
    </script>

<?php

    $to = "bridy@gmail.com";
    $name = $_POST['name'];
    $trip = $_POST['program'];
    echo $trip;

    $subject = 'Order Confirmation';
    $message = 'Hello '.$name.','.n.'Your order placed for '.$trip. 'has been approved. Please contact us for more details.';
    $headers = 'From: thaiTour@gmail.com' . "rn" .
    'Reply-To: thaiTour@gmail.com' . "rn" .
    'X-Mailer: PHP/' . phpversion();

    if(mail($to, $subject, $message, $headers)){
        echo "success!";
    }
?>