var timerID = null;
var timerRunning = false;
var timerWeekArray = new Array('日', '一', '二', '三', '四', '五', '六');
var timerShowerObject = null;

function stopclock() {
	if (timerRunning) clearTimeout(timerID);
	timerRunning = false;
}

function showtime() {
	var now = new Date();
	var field = now.getFullYear();
	var timeValue = '' + field + ' 年 ';
	field = now.getMonth() + 1;
	timeValue += ((field < 10) ? '0' : '') + field + ' 月 ';
	field = now.getDate();
	timeValue += ((field < 10) ? '0' : '') + field + ' 日';
	field = now.getHours();
	timeValue += ' ' + ((field < 10) ? '0' : '') + field;
	field = now.getMinutes();
	timeValue += ((field < 10) ? ':0' : ':') + field;
	field = now.getSeconds()
	timeValue += ((field < 10) ? ':0' : ':') + field;
	field = now.getDay();
	timeValue += ' 星期' + timerWeekArray[field];
	timerShowerObject.data = timeValue;
	timerID = setTimeout('showtime()', 1000);
	timerRunning = true;
}

function startclock() {
	var obj = document.getElementById('titleTimer');
	if (obj == null) return;
	timerShowerObject = document.createTextNode('');
	obj.appendChild(timerShowerObject);
	stopclock();
	showtime();
}