var day="";
var month="";
var myweekday="";
var year="";
newdate = new Date();
mydate = new Date();
dston =  new Date();
dstoff = new Date();
dston.setMonth( 3 ) // april
dston.setDate( 4 )  // 4th
dstoff.setMonth( 9 ) // october
dstoff.setDate( 30 ) // 30th

var myzone = newdate.getTimezoneOffset();
newtime=newdate.getTime();

var zone = -8;  // references your time zone

if (newdate > dston && newdate < dstoff ) {
zonea = zone - 1 ;
dst = "  Pacific Daylight Savings Time";
}
else {
zonea = zone ; dst = "  中国香港时间";
}
var newzone = (zonea*60*60*1000);
newtimea = newtime+(myzone*60*1000)-newzone;
mydate.setTime(newtimea);
myday = mydate.getDay();
mymonth = mydate.getMonth();
myweekday= mydate.getDate();
myyear= mydate.getYear();
year = myyear;

if (year < 2000)    // Y2K Fix, Isaac Powell
year = year + 1900; // http://onyx.idbsu.edu/~ipowell
myhours = mydate.getHours();
if (myhours >= 12) {
myhours = (myhours == 12) ? 12 : myhours - 12; mm = " PM";
}
else {
myhours = (myhours == 0) ? 12 : myhours; mm = " AM";
}
myminutes = mydate.getMinutes();
if (myminutes < 10){
mytime = ":0" + myminutes;
}
else {
mytime = ":" + myminutes;
};
arday = new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")
armonth = new Array("January ","February ","March ","April ","May ","June ","July ","August ","September ", "October ","November ","December ")
ardate = new Array("0th","1st","2nd","3rd","4th","5th","6th","7th","8th","9th","10th","11th","12th","13th","14th","15th","16th","17th","18th","19th","20th","21st","22nd","23rd","24th","25th","26th","27th","28th","29th","30th","31st");
// rename locale as needed.

var time = ("<span class='mainText'>现在时间是: " + myhours + mytime+ mm + " " + arday[myday] +" " + armonth[mymonth] +" "+ardate[myweekday] + ", " + year+" " + dst +".</span>");
document.write(time);
//-->