Zegar pokazujący ile czasu istnieje strona

<script>
<!--

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()
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)
difference+=" dni"
document.write("Witryna
NAZWA_STRONY istnieje od 10.09.2000,
czyli "+difference+"!")
}
//enter the count up date using
the format year/month/day
countup(2000,09,10)
//-->
</script>