function add2Fav(x){ 
        if (document.all  && !window.opera) { 
             if (typeof window.external == "object") { 
                window.external.AddFavorite(document.location, document.title); 
                return true; 
              } 
              else return false; 

        } 
        else{ 
            x.href=document.location; 
            x.title=document.title; 
            x.rel = "sidebar"; 
            return true; 
        } 
    }