function removeDefaultContent () {

        if (document.forms[0].body.value =~ $defaultContent) {
                document.forms[0].body.value = "";
                return true;
        }
        return false;

    } // removeDefaultContent

function showRecaptcha(element, submitButton, themeName) {
  Recaptcha.create("6LdMBAAAAAAAAF_kFd4A_3G8UYt_5IDd5SbD7qbx", element, {
    theme: themeName,
    tabindex: 0,
    callback: Recaptcha.focus_response_field
  });
  hideSubmitButton();
  document.getElementById('submit_button').style.visibility = "visible";
} // showRecaptcha

function hideSubmitButton() {
  document.getElementById('submit_button').style.visibility = "hidden";
} // hideSubmitButton