$(document).ready(function() { 
    $("#form").validate({ 
        onsubmit: true ,
        validClass: "success" ,
          rules: { 
            email: {
                required: true, 
              email: true 
            } 
          }, 
          messages: { 
                email: {
             required: "Please enter your email (name@domain.com)",
             email: "Please enter your email (name@domain.com)"
                 }
          },
        submitHandler: function(form) {
                    
            var email = $("input#email").val();
            var dataString = 'email=' + email;
            /* alert (dataString);return false; */
                    
            $.ajax({
            type: "POST",
            url: "/php/process.php",
            data: dataString,
            success: function() {
                $("#thanks-balloon").addClass("show");
                $("#email").val("");
                $("#email").blur();
            }
            });
            return false;
        }
    }); 
});