function add_favoritos() {
	title = document.title; 
	url = window.location.href;

	if (window.sidebar) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url,"");
	} else if( window.external ) { // IE Favorite
		window.external.AddFavorite( url, title);
	} else if(window.opera && window.print) { // Opera Hotlist
	return true;
	} else return false;
}