function clientSideInclude(id, url) {
    var req = false;
// Safari, Firefox, 及其他非微軟瀏覽器
if (window.XMLHttpRequest) {
        try {
            req = new XMLHttpRequest();
} catch (e) {
            req = false;
}
    } else if (window.ActiveXObject) {

        // For Internet Explorer on Windows
try {
            req = new 
 
ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
            try {
                req = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
                req = false;
}
        }
    }
    var element = document.getElementById(id);
if (!element) {
        alert("函式clientSideInclude無法找到id " + id + "
 
。" +
            "你的網頁中必須有一個含有這個id的div 或 span 標籤。");
return;
}
    if (req) {
        // 同步請求，等待收到全部內容
req.open('GET', url, false);
req.send(null);
if (req.status == 404) {
            clientSideInclude(id, 'error.html')
        } else {
            element.innerHTML = req.responseText;
}
    } else {
        element.innerHTML 
 
=
            "對不起，你的瀏覽器不支援" +
            "XMLHTTPRequest 物件。這個網頁的顯示要求" +
            "Internet Explorer 5 以上版本, " +
            "或 Firefox 或 Safari 瀏覽器，也可能會有其他可相容的瀏覽器存在。";
}
}

clientSideInclude(includeHtml, "http://XXXXX.html");//頁面中的一個div的id為includeHtml