i=0
arrMonths = new Array("一","二","三","四","五","六","七","八","九","十","十一","十二")
function showtime()
{
	if(i>3)
		i=0
	area=new Array(0,1,-13,-8)
	country=new Array("北京","东京","纽约","伦敦")
	nowdate = new Date()
	nowdate.setTime(nowdate.getTime() + area[i]*60*60*1000)
	myMonth=nowdate.getMonth() + 1
	myDay=nowdate.getDate()
	myYear=nowdate.getYear()
	myHour=nowdate.getHours()
	myMinute=nowdate.getMinutes()
	myMinute=(myMinute<10) ? "0" + myMinute : myMinute
	
	document.all.time.value=country[i] + ": " + myYear + "年" + myMonth + "月" + myDay + "日"   + " " + myHour + ":" + myMinute

	i=i+1
	setTimeout("showtime()",3000);
}