Hi,

I would like to get any advice to get a more detailed element hierarchy out of a very flat one.

E.g. my source xml is something like:
<book>
 <title1>title 1.1</title1>
 <para><para>
 <para>.. <footnote></footnote></para>
 <title2>title 1.1.1</title2>
 <para><para>
 <para>.. <footnote></footnote></para>
 <title2>title 1.1.2</title2>
 <para><para>
 <para>.. <footnote></footnote></para>
 <title1>title 1.2</title1>
 <para><para>
 <para>.. <footnote></footnote></para>
 <title2>title 1.2.1</title2>
 <para><para>
 <para>.. <footnote></footnote></para>
 <title2>title 1.2.2</title2>
 <para><para>
 <para>.. <footnote></footnote></para>
</book>

My desired result should be something like:
<book>
 <chapter1>
  <title>title 1.1</title>
  <para><para>
  <para>.. <footnote></footnote></para>
    <chapter2>
      <title>title 1.1.1</title>
      <para><para>
      <para>.. <footnote></footnote></para>
    </chapter2>
    <chapter2>
      <title>title 1.1.2</title>
      <para><para>
      <para>.. <footnote></footnote></para>
    </chapter2>
   </chapter1>
 <chapter1>
  <title>title 1.2</title>
  <para><para>
  <para>.. <footnote></footnote></para>
    <chapter2>
      <title>title 1.2.1</title>
      <para><para>
      <para>.. <footnote></footnote></para>
    </chapter2>
    <chapter2>
      <title>title 1.2.2</title>
      <para><para>
      <para>.. <footnote></footnote></para>
    </chapter2>
   </chapter1>
</book>

Is there any xslt construction for that purpose?