Suchfeld automatisch leeren

 setTimeout(function() {
   if (!window.BrowserSearch)
      return;
   var searchbar = BrowserSearch.searchBar;
   if (!searchbar)
      return;
   var textbox = searchbar.textbox;
   var tId;
   textbox.addEventListener('input', function() {
      clearTimeout(tId);
      tId = setTimeout(function() {
         textbox.value = '';
         document.getElementById('PopupSearchAutoComplete').hidePopup();
      }, 5000);
   });
}, 250);