function bookmark(seitenname) { 
	title = seitenname;
	url = 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 {
	   alert('Your Browser does not support this feature');
	} 
}