JavaScript在浏览器标题栏上显示当前日期和时间的方法

<script language="JavaScript"><!--function resetIt() {// Calculate Timevar timerID = null;var timerRunning = false;if(timerRunning)  clearTimeout(timerID);  timerRunning = false;// getTimevar timeNow = new Date();var hours = timeNow.getHours();var minutes = timeNow.getMinutes();var seconds = timeNow.getSeconds();var timeValue = "" + ((hours >12) ? hours -12 :hours)timeValue = ((timeValue <10)? "0":"") + timeValuetimeValue += ((minutes < 10) ? ":0" : ":") + minutestimeValue += ((seconds < 10) ? ":0" : ":") + secondstimeValue += (hours >= 12) ? " PM" : " AM"timerID = setTimeout("resetIt()",100);timerRunning = true;// getDatevar dateNow = new Date();var days = new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');var months = new Array('January','February','March','April','May','June','July','August','September','October','November','December');var date = ((dateNow.getDate()<10) ? "0" : "")+ dateNow.getDate();function y2k(number){return (number < 1000) ? number + 1900 : number;}// compileIttoday = timeValue + " " + days[dateNow.getDay()] + " " +        months[dateNow.getMonth()] + ", " +        date + " " +        (y2k(dateNow.getYear()));  if(document.all || document.getElementById){ // Browser Check   document.title = today.toString();  }else{   self.status = today.toString(); // Default to status.  }}resetIt();//--></script>