function addBookmark(url, title)
{
  if (!url) url = document.location.href;
  if (!title) title = document.title;

  //Gecko
  if ((typeof window.sidebar == "object") && (typeof window.sidebar.addPanel == "function")) window.sidebar.addPanel(title, url, "");
  //IE4+
  else if (typeof window.external == "object") window.external.AddFavorite(url, title);
  //Opera7+
  else if (window.opera && document.createElement)  
  {
    var a = document.createElement('A');
    //IF Opera 6
    if (!a) return; 

    a.setAttribute('rel', 'sidebar');
    a.setAttribute('href', url);
    a.setAttribute('title', title);
    a.click();
  }
}