function times(){
var mydate = new Date() 
var year = mydate.getFullYear()
var mon = mydate.getMonth()+1
var day = mydate.getDate()
var week =mydate.getDay()
var arr =new Array(" 星期日"," 星期一"," 星期二"," 星期三"," 星期四"," 星期五"," 星期六")
var str =year + "年" + mon +"月" + day + "日" 

var hours = mydate.getHours()
var minutes = mydate.getMinutes()
var sec = mydate.getSeconds()
if (hours<10){  hours =  "0" + hours }
// if(hours<12){ hours = "上午 " + hours } 
// if(hours>13) {hours = "下午 " + hours}
if (minutes<10){  minutes = "0" + minutes  }
if (sec<10){  sec = "0" + sec  }
var str2 = hours + ":" + minutes + ":" + sec
//var str3 = "现在时间是: "+ str + " " + str2
var str3 = str+""+arr[week]
xzsj.innerHTML = str3
setTimeout("times()",1000)}
times()// JavaScript Document