(function() {
  var params = '';
  if (typeof _acq != "undefined") {
    params = '?' + _acq;
  }
  var ac = document.createElement('script'); ac.type = 'text/javascript'; ac.async = true;
  ac.src = ('https:' == document.location.protocol ? 'https://' : 'http://') + 'www.library.wisc.edu/js/ask-chat-button-load.js' + params;
  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ac, s);

  var ask_div = false;
  var ask_link = false;
  if (document.getElementById('ask-chat-button')) {
    ask_div = document.getElementById('ask-chat-button');
  } /*else if (document.getElementsByClassName(chat_account_orig)[0]) {
    ask_div = document.getElementsByClassName(chat_account_orig)[0];
  } */else if (document.getElementById('ask-chat-link')) {
    ask_link = document.getElementById('ask-chat-link');
  }

  if (ask_div) {
    ask_div.innerHTML = '';
    var update_div = document.createElement('img');
    update_div.setAttribute('src', 'http://library.wisc.edu/images/chat-now-offline.png');
    update_div.setAttribute('alt', 'Chat is offline.');
    ask_div.appendChild(update_div);
  }

})();