What’s wrong with this code?

@vwphillipsJul 09.2009 — #
[CODE]<html>
 <head>
 <title>timeserved test</title>
 <link rel="stylesheet" href="/css/main.css" type="text/css" />
 <script language="JavaScript" type="text/javascript">
 /*<![CDATA[*/
 
 var imgPath = 'http://releasemelissa.com/images/';
 var imgPrefix = 'tally';
 var imgExt = '.gif';
 var imgH = 20;
 var imgW = 25;
 
 function Tally(id,since){
 var obj=document.getElementById(id);
 this.ary=obj.getElementsByTagName('dd');
 this.since=since;
 this.id=id
 this.update();
 }
 
 Tally.prototype.update=function(){
 var now = new Date();
 var diffMilliseconds = now.getTime() - this.since.getTime();
 
  var seconds = 0;
  var minutes = 0;
  var hours = 0;
  var days = 0;
  var months = 0;
  var years = 0;
 
  seconds += now.getSeconds() - this.since.getSeconds();
 
  if (seconds < 0)
  {
   seconds += 60;
   minutes--;
  }
  minutes += now.getMinutes() - this.since.getMinutes();
  if (minutes < 0)
  {
   minutes += 60;
   hours--;
  }
  hours += now.getHours() - this.since.getHours();
  if (hours < 0)
  {
   hours += 24;
   days--;
  }
  days += now.getDate() - this.since.getDate();
  if (days < 0)
  {
   days += daysInMonth(this.since.getFullYear(), this.since.getMonth());
   months--;
  }
  months += now.getMonth() - this.since.getMonth();
  if (months < 0)
  {
   months += 12;
   years--;
  }
  years += now.getFullYear() - this.since.getFullYear();
 
  this.ary[0].innerHTML = this.ToTally(years);
  this.ary[1].innerHTML = this.ToTally(months);
  this.ary[2].innerHTML = this.ToTally(days);
  this.ary[3].innerHTML = this.ToTally(hours);
  this.ary[4].innerHTML = this.ToTally(minutes);
  this.ary[5].innerHTML = this.ToTally(seconds);
 var oop=this;
 this.to=setTimeout(function(){  oop.update(); },1000);
 }
 
 function ToTallyDigit(num){
 if (!num) return "";
 return '<img src="' + imgPath + imgPrefix + num + imgExt + '" width="' + imgW + '" height="' + imgH + '" alt=""/>';
 }
 
 Tally.prototype.ToTally=function(num){
 var html = "";
 for (i = 1; i < (num + 1) / 5; i++){
 html += ToTallyDigit(5);
 }
 html += ToTallyDigit(num % 5);
 return html;
 }
 
 //http://snippets.dzone.com/posts/show/2099
 function daysInMonth(iYear, iMonth)
 {
 return 32 - new Date(iYear, iMonth, 32).getDate();
 }
 
 
 /*]]>*/
 </script>
 </head>
 <body>
 
 <div class="timeServed" id="timeServed0">
 <dl>
 <dt>Years</dt>
 <dd id="timeServed0Years"></dd>
 <dt>Months</dt>
 
   <dd id="timeServed0Months"></dd>
   <dt>Days</dt>
   <dd id="timeServed0Days"></dd>
   <dt>Hours</dt>
   <dd id="timeServed0Hours"></dd>
   <dt>Minutes</dt>
   <dd id="timeServed0Minutes"></dd>
 
   <dt>Seconds</dt>
   <dd id="timeServed0Seconds"></dd>
  </dl>
 </div>
 <script>
 var tsId="timeServed0";
 </script>
 <div class="timeServed" id="timeServed1">
 <dl>
 <dt>Years</dt>
 
   <dd id="timeServed1Years"></dd>
   <dt>Months</dt>
   <dd id="timeServed1Months"></dd>
   <dt>Days</dt>
   <dd id="timeServed1Days"></dd>
   <dt>Hours</dt>
   <dd id="timeServed1Hours"></dd>
 
   <dt>Minutes</dt>
   <dd id="timeServed1Minutes"></dd>
   <dt>Seconds</dt>
   <dd id="timeServed1Seconds"></dd>
  </dl>
 </div>
 
 <script  type="text/javascript">
 /*<![CDATA[*/
 
 var T1=new Tally('timeServed0',new Date(2003,3,5,8,45));
 var T2=new Tally('timeServed1',new Date(2003,3,5,8,45));
 
 /*]]>*/
 
 </script>
 </body>
 </html>[/CODE]
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