function addToFavorites()  
    {  
       var title = document.title; var url = location.href;  
        if (window.sidebar) // Firefox  
          window.sidebar.addPanel(title, url, '');  
       else if(window.opera && window.print) // Opera  
        {  
           var elem = document.createElement('a');  
           elem.setAttribute('href',url);  
          elem.setAttribute('title',title);  
          elem.setAttribute('rel','sidebar'); // required to work in opera 7+  
          elem.click();  
      }   
      else if(document.all) // IE  
          window.external.AddFavorite(url, title);  
   }