解析这个xml的js怎么写啊~~~~

Question

<script language=javascript>
var   objDoc   =   new   ActiveXObject("MSXML2.DOMDocument.3.0");   
          objDoc.load("1.xml");   
          var   items   =   objDoc.getElementsByTagName("tmname");
          for(var i=0;i<items.length;i++)
          {
           alert(items[i].getAttribute("tname"))
           alert(items[i].childNodes[0].text)
           alert(items[i].childNodes[1].text)
          }
</script>