function validate(formNode){
  var formValidatorInstance = new FormValidator(formNode);
  formValidatorInstance.addRule('name','We need a name to reply properly','required');
  formValidatorInstance.addRule('email','We need a valid email address with which to reply','email');
  formValidatorInstance.addRule('message','You seem to have forgotten the message','required');
  formValidatorInstance.addRule('publish-name','Can we publish your name or not?','ischecked');
  formValidatorInstance.addRule('publish-email','Can we publish your email or not?','ischecked');
  return formValidatorInstance.validate(); 
}