function getLastModified() {

var d = new Date(document.lastModified), res, value,
    browser = parseInt(navigator.appVersion),
    months = "01-02-03-04-05-06-07-08-09-10-11-12-";

   value = d.getYear();
   if (value<70) {value += 2000};
   if (value<1000) {value += 1900};
   if ((value>=1900) && (value<1970)) {value += 100};
   if (browser<4) { res = value+"- "+d.getMonth()+"- "+String(d.getDate()) }
   else { res = value+"-"+months.substr(3*(d.getMonth()),3)+String(d.getDate()) };

   return res;
}