javascript xpath的问题
ie下 
 比如 
 a.html 
  <!DOCTYPE   html   PUBLIC    "-//W3C//DTD   XHTML   1.0   Strict//EN "    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd ">  
  <html   xmlns= "http://www.w3.org/1999/xhtml "   xml:lang= "utf-8 "   lang= "utf-8 ">  
  <body>  
  <div   class= "l1 ">  
     <div   class= "l2 ">  
     </div>  
  </div>  
  <div   class= "l1 ">  
     <div   class= "l2 ">  
     </div>  
  </div>  
  <script   type= "text/javascript "   src= "xpath.js ">  </script>  
  </body>  
  </html>    
 ie环境下xpath.js里怎么写可以通者xpath选择 
 a.html里的元素?
------解决方案-------------------- <XML id= "aXML " src= "a.html>  </XML>    
 in javascript   
 aXML.selectSingleNode( "you xpath ");