帮我看看这个javascript有什么问题

注意函数的大小写
<html>
<head><style type="text/css">
</style>
<title>?±??</title>
<script language="javascript">
<!--
function showclock(){
  }
function hideclock(){
  }
  
  var timeID=null;
  var timerunning=false;
function stopclock(){
  if(timerunning)
  cleartimeout(timerID);
  timerunning=false;
  document.clock.face.value="";
  }
  
  
 function showtime(){
     
     var now=new Date();
     var year=now.getYear();
     var month=now.getMonth()+1;
     var date=now.getDate();
     var hours=now.getHours();
     var mins=now.getMinutes();
     var secs=now.getSeconds();
     var timeval="";
     timeval+=((hours<=12)?hours:hours-12);
     timeval+=((mins<10)?":0":":")+mins;
     timeval+=((secs<10)?":0":":")+secs;
     timeval+=(hours<12)?"AM":"PM";
     timeval+=((month<10)?"On0":"on")+month;
     timeval+=date+"-"+year;
     document.clock.face.value=timeval;
     timeID=setTimeout("showtime()",1000);
     timerunning=true;
}
 function startclock(){
    
    stopclock();
    showtime();}
function windowopener(indexnum){
    var loadpos="date.html"+"#"+indexnum;
    controlwindow=window.open(loadpos,"date","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=620,height=400");
}
-->
</script>
</head>
<body onload="startclock()">
<p align="center"><big><span= style="background: rgb(45,45,45)"><font face="Arial">form</font> &nbsp; <font>?±??
</font></span></big></p>
<p align="center">??</p>
<div align="center"><center>
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="100%"><form NAME="clock" onSubmit="0">
<div align="center"><center><p><input TYPE="text" NAME="face" size="20" VALUE style="background-color: rgb(192,192,192)"> </p>
</center></div>
</form>
</td>
</tr>
</table>
</center></div>
</body>
</html>