Code
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
var montharray=new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
function countup(yr,m,d) {
var today=new Date();
var todayy=today.getYear();
// Y2K Fix by Isaac Powell
// http://onyx.idbsu.edu/~ipowell
if ((navigator.appName == "Microsoft Internet Explorer") && (todayy < 2000))
todayy="19" + todayy;
if (navigator.appName == "Netscape")
todayy=1900 + todayy;
var todaym=today.getMonth();
var todayd=today.getDate();
var todaystring=montharray[todaym]+" "+todayd+", "+todayy;
var paststring=montharray[m-1]+" "+d+", "+yr;
var difference=(Math.round((Date.parse(todaystring)-Date.parse(paststring))/(24*60*60*1000))*1);
document.write("Я родилсия " + difference + " дней назад.");
}
countup(1911,01,01); //Укажите здесь дату: (year,month,day)
// End -->
</script>