function addFav(){   var url      = "http://www.prestifarma.com";   
var title    = "Prestifarma ";    
if (window.sidebar) window.sidebar.addPanel(title, url,"");
else if(window.opera && window.print){       var mbm = document.createElement('a');       
mbm.setAttribute('rel','sidebar');       mbm.setAttribute('href',url);       
mbm.setAttribute('title',title);       mbm.click();   }   
else if(document.all){window.external.AddFavorite(url, title);}}