var bookmarkurl="URL SITOWEB"
      var bookmarktitle="NOME SITOWEB"

      function addbookmark(){
      if (document.all)
      window.external.AddFavorite(bookmarkurl,bookmarktitle)
      }
      
      function home() {
      if(document.all)document.body.style.behavior='url(#default#homepage)';document.body.setHomePage('URL SITOWEB');
      }