解析xml2.html

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<script type="text/javascript">
	loadXML = function(xmlFile){  
    var xmlDoc=null;  
    var agent = navigator.userAgent.toLowerCase();  
  
    //判断浏览器的类型  
    //支持IE浏览器  
    if(agent.indexOf("msie") > 0){  
        alert("22");  
        var xmlDomVersions = ['MSXML.2.DOMDocument.6.0','MSXML.2.DOMDocument.3.0','Microsoft.XMLDOM'];  
        for(var i=0;i<xmlDomVersions.length;i++){  
            try{  
                xmlDoc = new ActiveXObject(xmlDomVersions[i]);  
                break;  
            }catch(e){  
            }  
        }  
    }  
    //支持firefox浏览器  
     else if(agent.indexOf("firefox") > 0){  
        try{  
            xmlDoc = document.implementation.createDocument('','',null);  
        }catch(e){  
        }  
    } else{//谷歌浏览器   
        var oXmlHttp = new XMLHttpRequest() ;  
        oXmlHttp.open( "GET", xmlFile, false ) ;  
        oXmlHttp.send(null) ;   
        return oXmlHttp.responseXML;  
    }  
     if(xmlDoc!=null){  
        xmlDoc.async = false;  
        xmlDoc.load(xmlFile);  
    }   
    return xmlDoc;  
}  
var x=loadXML("test2.xml");
alert("a");
	</script>
</body>
</html>