function bookmark(title, url) {
 /*if (title == undefined)
  title = document.title;
 if (url == undefined)
  url = top.location.href;*/
  
 var ua = navigator.userAgent.toLowerCase();
 
 if (window.sidebar) {
  // Firefox
  window.sidebar.addPanel(title, url, '');
 } 
  else if (window.opera && window.print) {
  // Opera
  var t = document.createElement('a');
  t.setAttribute('rel', 'sidebar');
  t.setAttribute('href', url);
  t.setAttribute('title', title);
  t.click();
 }
 else if ( ua.indexOf("msie") == -1 )
 {
	 alert("Чтобы добавить в избранное нажмите \"Ctrl + D\" ");
 } 
 
	
	if(ua.indexOf("msie") != -1  )
	{
	  // IE
	  window.external.AddFavorite(url, title);
	}


};