//date vetnam
var dt=new Date();
var strDay_num= dt.getDate();
if(strDay_num < '9' ) strDay_num = '0'+strDay_num;
var strMonth = new Array('01','02','03','04','05','06','07','08','09','10','11','12');
var strDay = new Array('Chủ nhật', 'Thứ Hai', 'Thứ Ba', 'Thứ Tư', 'Thứ Năm', 'Thứ Sáu', 'Thứ Bảy');
var date=strDay[dt.getDay()] + ' ';
var years= dt.getYear();
if (years<1900) years+= 1900;
strDate= date += ' '+ strDay_num +'/'+strMonth[dt.getMonth()] + '/'+years;

function datetime()
{
document.write(strDate);
}
//date english
var dt2=new Date();
var strDay_num2= dt2.getDate();
if(strDay_num2 < '9' ) strDay_num2 = '0'+strDay_num2;
var strMonth2 = new Array('01','02','03','04','05','06','07','08','09','10','11','12');
var strDay2 = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday');
var date2=strDay2[dt2.getDay()] + ' ';
var years2= dt2.getYear();
if (years2<1900) years2+= 1900;
strDate2= date2 += ' '+strMonth2[dt2.getMonth()] + '/'+ strDay_num2 +'/'+years2;

function datetime2() {
document.write(strDate2);
}