title: how to strip characters right of '_' in node name using xslt
body: <p>my requirement is to rename all the node names which has _ in them to new name. 
  how to strip the char right of _ present in a node name and leave the left side of the name as the new node name? e.g</p>
  
  <pre><code>&lt;abc_2013&gt;&lt;/abc_2013&gt; to be renamed as &lt;abc&gt;&lt;/abc&gt;
  </code></pre>