最近更新網站首頁廣告，ASP.NET的廣告控件很容易實現這點，可首頁是靜態頁面，聯想廣告控件的原理決定采用javascript+xml實現這點方面配置，更新廣告時只要更新xml即可，方便了廣告輪換
xml結構如下
<ad>
<tupian>http://www.seehaha.com/images/060901-150.100.2.gif</tupian>
<tupian>http://www.seehaha.com/xml/061009-300.100.jpg</tupian>
<dizhi>http://www.seehaha.com/plan/</dizhi>
<dizhi>http://www.seehaha.com/va.htm</dizhi>
</ad>
==
// JScript 文件 var Now = new Date(); var Min = Now.getSeconds(); var i; if((Min % 2) == 1)//讀取秒數，根據奇偶隨機輪換，當然也可以改變此處算法增加xml節點數 { i = 1; } else { i = 0; }var url = "xml/ads.xml";String.prototype.Trim = function() { return this.replace(/(^\s*)|(\s*$)/g, ""); }var xmlDoc;//判斷是否為Firefox或IE var moz = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined'); var ie = (typeof window.ActiveXObject != 'undefined');function importXML(file) { if (moz) { xmlDoc = document.implementation.createDocument("", "doc", null);//創建FIREFOX下XML文檔對象 } else if (ie) { xmlDoc = new ActiveXObject("MSXML2.DOMDocument.3.0"); xmlDoc.async = false; while( xmlDoc.readyState != 4) {};//創建IE下XML文檔對象 } xmlDoc.load(file);}importXML(url);//載入xmlfunction updatetupiandizhi(){if (moz) { var ad = xmlDoc.getElementsByTagName("ad")[0]; var tupian; var _tupian = ad.getElementsByTagName("tupian")[i].firstChild.nodeValue; if (_tupian) tupian = _tupian.Trim(); //得到tupian,dizhi節點下的值 var dizhi; var _dizhi=ad.getElementsByTagName("dizhi")[i].firstChild.nodeValue; if(_dizhi) dizhi = _dizhi.Trim(); document.getElementById('tupian').href = tupian; document.getElementById('dizhi').src = dizhi; //實現輪換 } else if (ie) {var src = xmlDoc.documentElement.selectNodes("tupian");var href = xmlDoc.documentElement.selectNodes("dizhi");/得到tupian,dizhi節點下的值document.getElementById("dizhi").href = href(i).text;document.getElementById("tupian").src = src(i).text; //實現輪換 }}