/*

* 获取XMLHttpRequest对象

*/

function CreateXMLHttpRequest() {

    var xmlreq = false;

    if (window.ActiveXObject) {

        xmlreq = new ActiveXObject("Microsoft.XMLHTTP");

    }

    else if (window.XMLHttpRequest) {

        xmlreq = new XMLHttpRequest();

    }

    return xmlreq;

}

/*

* 获取服务端时间，返回DateTime对象

*/

function GetServerDate() {

    var xmlhttp = CreateXMLHttpRequest();

    var ipaddress = "http://" + location.host + siteSuffix;

    xmlhttp.open("HEAD", ipaddress, false);

    xmlhttp.setRequestHeader("Range", "bytes=-1");

    xmlhttp.send(); //异步的形式向服务器发送请求

    var serverDate = new Date(xmlhttp.getResponseHeader("Date"));

    return serverDate;

}

  WebServerTime = GetServerDate();

 var year = webTime.getFullYear();

        var month = webTime.getMonth();

        var day = webTime.getDate();

        var hour = webTime.getHours();

        var m = webTime.getMinutes();

        var s = webTime.getSeconds();