function add_favorite(url, title) {
    if (document.all) { /* IE */
        window.external.AddFavorite(url, title);
    } else {
        if (window.sidebar) { /* FIREFOX*/
            window.sidebar.addPanel(title, url, "");
        }
    }
}
function openWindow(url) {
  var iTop = (window.screen.availHeight-30-500)/2;
  var iLeft = (window.screen.availWidth-10-814)/2;
  window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=814,height=500,screenX=150,screenY=150,top='+iTop+',left='+iLeft)
}