title: Selenium IDE datadrivenv0.2 issue with Firefox 20.0
body: <p>I have just updated my firefox to v 20.0. Whenever I open Selenium IDE in firefox , it show a popup error . </p>
  
  <p><code>Failed to load  user-extensions.js file=[PATH to file ...]datadriven_v0.2/datadriven.js lineNumber=37 error=ReferenceError:XML is not defined</code>. </p>
  
  <p>The reported line in the file is sth like this :</p>
  
  <pre><code>XML.serialize = function(node) {
      if (typeof XMLSerializer != "undefined")
          return (new XMLSerializer()).serializeToString(node) ;
      else if (node.xml) return node.xml;
      else throw "XML.serialize is not supported or can't serialize " + node;
  }
  </code></pre>
  
  <p>I do not know any thing specific to selenium IDE ,if XML is part of Selenium IDE or firefox . However, it seems latest updates to Firefox has sth to do. </p>
  
  <p>I ll appreciate if someone help me fix this issue. </p>