function switchOn(state) {
  return state.replace(/off/i, 'on');
}

function switchOff(state) {
  return state.replace(/on/i, 'off');
}

function toggleFAQ(ident) {
  faq=document.getElementById('faq'+ident);
  faqbtn=document.getElementById('faqbtn'+ident);
  if(faq && faqbtn) {
    if(faqbtn.className=='off') {
      faqbtn.className=switchOn(faqbtn.className);
      faq.className=switchOn(faq.className);
    } else {
      faqbtn.className=switchOff(faqbtn.className);
      faq.className=switchOff(faq.className);
    }
  }
}