// JavaScript Document
var timerID = null; 
var timerRunning = false; 
function stopclock (){ 
if(timerRunning) 
clearTimeout(timerID); 
timerRunning = false;} 
function startclock () { 
stopclock(); 
showtime();} 
function showtime () { 
var now = new Date(); 
var hours = now.getHours(); 
var minutes = now.getMinutes(); 
var seconds = now.getSeconds() 
var timeValue = now.getYear()+"年"+(now.getMonth()+1)+"月"+now.getDate()+"日　" 
timeValue += ((hours >23) ? hours -23 :hours) 
timeValue += ((minutes < 10) ? ":0" : ":") + minutes 
timeValue += ((seconds < 10) ? ":0" : ":") + seconds 
document.getElementById("thetime").innerHTML=timeValue; 
timerID = setTimeout("showtime()",1000); 
timerRunning = true;}