function getCorrectedYear(year) {
  year = year - 0;
  if (year < 70) return (2000 + year);
  if (year < 1900) return (1900 + year);
  return year;
}
        
var lmod = new Date();
var yearstr = getCorrectedYear(lmod.getYear());     
var outstr = yearstr;
document.write(outstr);