Nefunguje to. Po tejto uprave:
Kód:
<script language="JavaScript">
function countdown(finaldate) {
//finaldate musí byť v tvare April 22, 2009
var today=new Date();
var thebigday=new Date (finaldate);
var difference;
difference=today-thebigday;
difference=parseInt(difference/(1000*60*60*24)/365);
document.write(difference);
}
</script>
John bude mať narodeniny o <script language="JavaScript">
countdown('December 17, 2008');</script> dní.
Som to ulozil ako xxx.html, no ukaze len "...1 dní".