function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  cookie_str = document.cookie;
  cookie_str.toString();
  pos_start  = cookie_str.indexOf(name);
  pos_end    = cookie_str.indexOf('=', pos_start);
  cookie_name = cookie_str.substring(pos_start, pos_end);
  pos_start  = cookie_str.indexOf(name);
  pos_start  = cookie_str.indexOf('=', pos_start);
  pos_end    = cookie_str.indexOf(';', pos_start);  
  if (pos_end <= 0) pos_end = cookie_str.length;
  cookie_val = cookie_str.substring(pos_start + 1, pos_end);
  if (cookie_name == name && cookie_val  == "done")
    return;
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}

function bookmarksite(title,url){
	if (navigator.userAgent.indexOf('Firefox') !=-1) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url,"");
		window.location.href="http://plugmamo.altervista.org/";
		} 
else if (navigator.userAgent.indexOf('MSIE') !=-1) { // IE Favorite
		window.external.AddFavorite( url, title); 
		}
else { 
		alert("Funzione non supportata. Chiudi questa finestra e premi ctrl+D per aggiungermi ai preferiti"); 
		}
}