function auth_form(formId) {
  $('#' + formId + ' input:first').before('<input type="hidden" name="auth-code" value="ag654jsid"/>');
}

function validateForm() {
  // now validate the form
  var formField = document.forms["contactForm"]["realname"].value
  if (formField == null || formField == "") {
    alert("Please tell us your name");
    return false;
  }
  formField = document.forms["contactForm"]["message"].value
  if (formField == null || formField == "" || formField == " ") {
    alert("Please leave us a message");
    return false;
  }
  var emailField = document.forms["contactForm"]["email"].value
  var phoneField = document.forms["contactForm"]["telephone"].value
  if ((emailField == null || emailField == "") && (phoneField == null || phoneField == "")) {
    alert("Please leave us your contact details");
    return false;
  }

  return true;
}