function clock(hour,minute,second)
{
	//分别取得传入的时、分、秒的数值
	var intHours   = hour;
	var intMinutes = minute;
	var intSeconds = second;

	//格式化待输出的样式
	if (intHours < 10) {
		hours = "0"+intHours+":";
	} else {
		hours = intHours+":";
	}

	if (intMinutes < 10) {
		minutes = "0"+intMinutes+"";
	} else {
		minutes = intMinutes+"";
	}
	if (intSeconds < 10) {
		seconds = "0"+intSeconds+" ";
	} else {
		seconds = intSeconds+" ";
	}

	intSeconds += 1;    //秒自增1 不论在哪里 每秒时间都是相同的
	if (intSeconds>=60)
	{
		intSeconds = 0;
		intMinutes +=1;
	}

	if (intMinutes>=60)
	{
		intHours   += 1;
		intSeconds  = 0;
		intMinutes  = 0
	}

	if (intHours>=24)
	{
		intHours   = 0;
		intSeconds = 0;
		intMinutes = 0;
	}

	timeString = hours+minutes;

	//定位到文档中输出
	document.getElementById('clock').innerHTML = "<strong>"+timeString+"</strong>";
	//显示间隔
	window.setTimeout("clock("+intHours+","+intMinutes+","+intSeconds+");", 1000);
}