function ModifyText ()
{
 if (YD.hasClass(document.body, "gallery_7445327"))
 {
   var objElement = YD.get("comment")
   if (objElement != null)
   {
     var str = new String(objElement.innerHTML);
     str = str.replace(/\gallery/gi, 'Guestbook');
     objElement.innerHTML = str;
   }
 }
}

YE.onAvailable("comment", ModifyText);