$("#email_form").validate({
    errorClass: "error",
    errorPlacement: function(error, element) {
      if ( element.get(0).tagName == "TEXTAREA") {
        error.appendTo( element.parent().parent() );
        element.parent().parent().parent().addClass("error");
      } else {
        error.appendTo( element.parent() );
        element.parent().parent().addClass("error");
      }
    },
    rules: {
        email_name: "required",
        email_email: "required",
        email_message: "required"
    },
    messages: {
        email_name: "Please fill this",
        email_email: "Please fill this",
        email_message: "Please fill this"
    }
});