问PHP、jquery ajax调用不起作用

EN

$(document).ready(function () {
            $('#ValidateTest').hide(); 
            $('#cf_submit').click(function () { 
                if ($('#cf_message').val() == '' || $('# cf_name').val() == '') {
                    $('#ValidateTest').html('Please complete.').css({ 'color': 'red' }).show(); 
                    return;

                }

                var parameters = {
                    'name': $('#cf_name').val(),
                    'message': $('#cf_message').val()
                }; //Use JSON to pass parameters into ajax calls  


                //Make ajax call to post to database
                $.ajax({
                    type: 'POST',
                    url: 'SendTest.php',
                    datatype: 'json',
                    data: parameters,
                    success: function () {

                        $('#ValidateTest').html('Thank-you!').css({ 'color': 'green' }).show();

                    }
                });
            }); //End button click

        }); //end jquery call 

<?php
$con = mysql_connect('host', 'username', 'passw');
if (!$con) {
    die('Could not connect: ' . mysql_error());
}
mysql_select_db("", $con);
mysql_query("CALL sp_CreateTestimony("$_POST['message']", "$_POST['name']")");
mysql_close($con);
?>