asp调用javascript无反应的问题

<SCRIPT language=JavaScript
            src="date.js"
            type=text/JavaScript></SCRIPT>
<script language="JavaScript" type="text/javascript">
<!--
document.write("<span id='clock'></span>");
var now,hours,minutes,seconds,timeValue;
function showtime(){
now = new Date();
hours = now.getHours();
minutes = now.getMinutes();
seconds = now.getSeconds();

timeValue = hours + ":";
timeValue += ((minutes <10)?"0":"") + minutes+":";
timeValue += ((seconds <10)?"0":"") + seconds;
clock.innerHTML = timeValue;
setTimeout("showtime()",100);
}
showtime();
//-->
</script>
</font>

var day="";
var month="";
var ampm="";
var ampmhour="";
var myweekday="";
var year="";
mydate=new Date();
myweekday=mydate.getDay();
mymonth=mydate.getMonth()+1;
myday= mydate.getDate();
myyear= mydate.getYear();
year=(myyear > 200) ? myyear : 1900 + myyear;
if(myweekday == 0)
weekday=" 星期日 ";
else if(myweekday == 1)
weekday=" 星期一 ";
else if(myweekday == 2)
weekday=" 星期二 ";
else if(myweekday == 3)
weekday=" 星期三 ";
else if(myweekday == 4)
weekday=" 星期四 ";
else if(myweekday == 5)
weekday=" 星期五 ";
else if(myweekday == 6)
weekday=" 星期六 ";
document.write(year+"年"+mymonth+"月"+myday+"日 "+weekday);