function bookmark(url, title, url_type, pagetitle_type)
{
	if (url == "" || url_type=="detect")
	{
		url = location.href;
	}	
	if (title == "" || pagetitle_type=="detect")
	{
		title = document.title;	
	}
	
	if(document.all)
		window.external.AddFavorite(url,title);
}