var timerID;

function tzone(os, ds, cl) {
    this.ct = new Date(0); // datetime
    this.os = os; // GMT offset
    this.ds = ds; // has daylight savings
    this.cl = cl; // font color
}

function UpdateClocks() {
    var ct = new Array(
new tzone(-10, 0, 'silver'),
new tzone(-9, 0, 'silver'),
new tzone(-8, 0, 'silver'),
new tzone(-8, 0, 'silver'),
new tzone(-8, 0, 'silver'),
new tzone(-8, 0, 'silver'),
new tzone(-7, 0, 'silver'),
new tzone(-7, 0, 'silver'),
new tzone(-7, 0, 'silver'),
new tzone(-7, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-6, 0, 'silver'),
new tzone(-5, 1, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-5, 0, 'silver'),
new tzone(-4, 1, 'silver'),
new tzone(-4, 1, 'silver'),
new tzone(-3.5, 0, 'silver'),
new tzone(-3, 0, 'silver'),
new tzone(-3, 1, 'silver'),
new tzone(-3, 1, 'silver'),
new tzone(-3, 1, 'silver'),
new tzone(-3, 1, 'silver'),
new tzone(0, 0, 'silver'),
new tzone(0, 0, 'silver'),
new tzone(0, 0, 'silver'),
new tzone(0, 0, 'silver'),
new tzone(0, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+1, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+2, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3, 0, 'silver'),
new tzone(+3.5, 0, 'silver'),
new tzone(+4, 0, 'silver'),
new tzone(+4.5, 0, 'silver'),
new tzone(+5, 0, 'silver'),
new tzone(+5, 0, 'silver'),
new tzone(+5, 0, 'silver'),
new tzone(+5, 0, 'silver'),
new tzone(+5.5, 0, 'silver'),
new tzone(+5.5, 0, 'silver'),
new tzone(+5.5, 0, 'silver'),
new tzone(+5.75, 0, 'silver'),
new tzone(+6, 0, 'silver'),
new tzone(+6.5, 0, 'silver'),
new tzone(+7, 0, 'silver'),
new tzone(+7, 0, 'silver'),
new tzone(+7, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+8, 0, 'silver'),
new tzone(+9, 0, 'silver'),
new tzone(+9, 0, 'silver'),
new tzone(+9.5, 0, 'silver'),
new tzone(+10, 0, 'silver'),
new tzone(+10, 0, 'silver'),
new tzone(+10, 1, 'silver'),
new tzone(+10, 1, 'silver'),
new tzone(+10, 1, 'silver'),
new tzone(+9.5, 1, 'silver'),
new tzone(+12, 0, 'silver'),
new tzone(+12, 0, 'silver'),
new tzone(+12, 0, 'silver'),
new tzone(+12, 1, 'silver'),
new tzone(+12.75, 1, 'silver'),
new tzone(+14, 0, 'silver')
    );

    var dt = new Date(); // [GMT] time according to machine clock
    var startDST = new Date(dt.getFullYear(), 3, 1);

    while (startDST.getDay() != 0)
        startDST.setDate(startDST.getDate() + 1);

    var endDST = new Date(dt.getFullYear(), 9, 31);

    while (endDST.getDay() != 0)
        endDST.setDate(endDST.getDate() - 1);

    var ds_active; // DS currently active
    if (startDST < dt && dt < endDST)
        ds_active = 1;
    else
        ds_active = 0;

    // Adjust each clock offset if that clock has DS and in DS.

    for (n = 0; n < ct.length; n++)
        if (ct[n].ds == 1 && ds_active == 1) ct[n].os++;

    // compensate time zones

    var printstr = "";

    gmdt = new Date();
    for (n = 0; n < ct.length; n++) {
        ct[n].ct = new Date(gmdt.getTime() + ct[n].os * 3600 * 1000);
    }

    document.getElementById("Clockk34").innerHTML = '纽约:' + ClockString(ct[43].ct); //纽约夏令时改为43，其它为34
    document.getElementById("Clockk122").innerHTML = '&nbsp;北京:' + ClockString(ct[122].ct); //北京
    document.getElementById("Clockk22").innerHTML = '&nbsp;东京:' + ClockString(ct[130].ct); //东京
    document.getElementById("Clockk133").innerHTML = '&nbsp;悉尼:' + ClockString(ct[133].ct); //悉尼夏令时改为133，其它改为130
    document.getElementById("Clockk54").innerHTML = '&nbsp;伦敦:' + ClockString(ct[56].ct); //伦敦 夏令改为56,其他时间改为54
    timerID = window.setTimeout("UpdateClocks()", 1001);
}
function ClockString(dt) {
    var stemp, ampm;
    var dt_year = dt.getUTCFullYear();
    var dt_month = dt.getUTCMonth() + 1;
    var dt_day = dt.getUTCDate();
    var dt_hour = dt.getUTCHours();
    var dt_minute = dt.getUTCMinutes();
    var dt_second = dt.getUTCSeconds();
    dt_year = dt_year.toString();

    if (dt_hour < 10)
        dt_hour = '0' + dt_hour;

    if (dt_minute < 10)
        dt_minute = '0' + dt_minute;

    if (dt_second < 10)
        dt_second = '0' + dt_second;
    stemp = dt_hour + ":" + dt_minute;
    return stemp;
}
UpdateClocks();