// JavaScript Document
<!-- 隐藏脚本从旧的浏览器
var DifferHour = -1
var DifferMinute = -1
var DifferSecond = -1
var Tday1 = new Date("Dec 19, 2012 23:59:38")   //**倒计时时间-注意格式
var daysms = 24 * 60 * 60 * 1000
var hoursms = 60 * 60 * 1000
var Secondms = 60 * 1000
var microsecond = 1000
function clock()
{
    var time = new Date()
    var hour = time.getHours()
    var minute = time.getMinutes()
    var second = time.getSeconds()
    var timevalue = ""+((hour > 12) ? hour-12:hour)
    timevalue +=((minute < 10) ? ":0":":")+minute
    timevalue +=((second < 10) ? ":0":":")+second
    timevalue +=((hour >12 ) ? " PM":" AM")
    var convertHour = DifferHour
    var convertMinute = DifferMinute
    var convertSecond = DifferSecond
    var Diffms = Tday1.getTime() - time.getTime()
    DifferHour = Math.floor(Diffms / daysms)
    Diffms -= DifferHour * daysms
    DifferMinute = Math.floor(Diffms / hoursms)
    Diffms -= DifferMinute * hoursms
    DifferSecond = Math.floor(Diffms / Secondms)
    Diffms -= DifferSecond * Secondms
    var dSecs = Math.floor(Diffms / microsecond)
    if(convertHour != DifferHour) document.getElementById("dd").innerText = DifferHour
    if(convertMinute != DifferMinute) document.getElementById("hh").innerText=DifferMinute
    if(convertSecond != DifferSecond) document.getElementById("mm").innerText=DifferSecond
        document.getElementById("ss").innerText=dSecs
// document.formnow.Tnow.value= DifferHour DifferMinute + DifferSecond + dSecs
setTimeout("clock()",1000)
}
// 隐藏-->