///////////  BEGIN Agregar a Favoritos
function agregar(url, titulo){
if ((navigator.appName=="Microsoft Internet Explorer") && (parseInt(navigator.appVersion)>=4)) {
//// window.external.AddFavorite(location.href, document.title);'>	
window.external.AddFavorite(url,titulo);
}
else {
if(navigator.appName == "Netscape") 

alert("Sorry! Your browser doesn't support this function.");

}
}
///////////  END Agregar a Favoritos