gistfile1.js

Remote.WithJsValidation = $.klass(Remote.Base, {
  initialize: function() {
    $(this.element).validate();
  }, 
  onsubmit: function(event) {
    if ($(this.element).valid()) {
      return true;
    } else {
      event.preventDefault();
      return false;
    }
  }
});
$("form.validation").attach(Remote.WithJsValidation);