表单无法在Jquery中使用远程方法提交。我不能提交表格

Question

我在php中添加了jquery validation.recently我在注册时添加了远程技术检查电子邮件。添加后我的表单不提交。我该怎么办？

<script type="text/javascript">
runAllForms();
// Validation
$(function() {
    // Validation
    $("form_id_name").validate({

        // Rules for form validation
    rules : {
             email : {
                required : true,
                email : true,
                remote: 'page.php'   // page where i am checking email from database.
            }
        },

        // Messages for form validation
        messages : {
            email : {
                required : 'Please enter your email address',
                email : 'Please enter a VALID email address',
                remote: 'This email address is already taken! Try another.'
            }
        },

        // Ajax form submition
        submitHandler : function(form) {
            $(form).ajaxSubmit({
                success : function() {
                    $("from_id_name").addClass('submited');

                }
            });
        },

        // Do not change code below
        errorPlacement : function(error, element) {
            error.insertAfter(element.parent());
        }
    });

});

page.php文件

<?php
include("connect_file.php"); // connection file
header('Content-type: application/json');
$email = $_REQUEST['email'];
$query=mysql_query("select email_col from table_name where email_col = '$email' ");
if (mysql_num_rows($query) == 0) {
    $output = 'true';
}
else {
    $output = 'false';
}
echo $output;
?>

我该怎么办？我是jquery的先生。请帮帮我。