[JavaScript] Codigo Agregar a Favoritos

<script type="text/javascript" language="JavaScript1.2">
 function CreateBookmarkLink() {

 title = "TITULO DE TU SITIO WEB";

 url = "http://TU-SITIO-WEB.es.tl/";

   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; }
 }

 if (window.external) {
  document.write('<a href="javascript:CreateBookmarkLink()"><u>Agreganos a Favoritos</u></a>');
  } else  if (window.sidebar) {
  document.write('<a href="javascript:CreateBookmarkLink()"><u>Agreganos a Favoritos</u></a>');
 } else if (window.opera && window.print) {   
   document.write('<a href="javascript:CreateBookmarkLink()"><u>Agreganos a Favoritos</u></a>');
 }

</script>