var dayarray=new Array("Chủ nhật","Thứ hai","Thứ ba","Thứ tư","Thứ năm","Thứ sáu","Thứ bảy")
var montharray=new Array("01","02","03","04","05","06","07","08","09","10","11","12")

function getthedate()
{
    var mydate=new Date()
    var year=mydate.getYear()
    if(year < 1000)
        year+=1900
    var day=mydate.getDay()
    var month=mydate.getMonth()
    var daym=mydate.getDate()
    if(daym<10)
        daym="0"+daym
    var hours=mydate.getHours()
    var minutes=mydate.getMinutes()
    var seconds=mydate.getSeconds()
    var dn="AM"
    if (hours>=12)
        dn="PM"
    if(hours>12)
    {
        hours=hours-12
    }
    if(hours==0)
        hours=12
    if(minutes<=9)
        minutes="0"+minutes
    if(seconds<=9)
        seconds="0"+seconds
    //change font size here
    var cdate="<small><b>" + dayarray[day]+ ",ngày " + daym + "/" + montharray[month]+ "/" + year + " -- " + hours +":"+ minutes + ":" + seconds+ " " + dn + "</small></b>"
    if(document.all)
        document.all.clock.innerHTML=cdate
    else if(document.getElementById)
        document.getElementById("clock").innerHTML=cdate
    else
        document.write(cdate)
}
if(!document.all&&!document.getElementById)
    getthedate()
function goforit()
{
    if(document.all||document.getElementById)
        setInterval("getthedate()",1000)
}