<div id="includeHtml"></div>

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("函數(shù)clientSideInclude無(wú)法找到id " + id + "。" +      "你的網(wǎng)頁(yè)中必須有一個(gè)含有這個(gè)id的div 或 span 標(biāo)簽。");    return;  }  if (req) {    // 同步請(qǐng)求，等待收到全部?jī)?nèi)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(duì)不起，你的瀏覽器不支持" +      "XMLHTTPRequest 對(duì)象。這個(gè)網(wǎng)頁(yè)的顯示要求" +      "Internet Explorer 5 以上版本, " +      "或 Firefox 或 Safari 瀏覽器，也可能會(huì)有其他可兼容的瀏覽器存在。";  }}clientSideInclude(includeHtml, "http://XXXXX.html");//頁(yè)面中的一個(gè)div的id為includeHtml