function toggleLanguages(){
  var lang = document.getElementById('language_toggle');
  var toggle = document.getElementById('language_toggle_link');
  if(lang.style.display == 'none' || lang.style.display == ''){
    lang.style.display = 'block';
    toggle.innerHTML = '-';
  } else {
    lang.style.display = 'none';
    toggle.innerHTML = '+';
  }
}