I have an XML organized like below-

<section name="Parent 1 Text here" ID="1" >
  <section name="Child 1 Text here" ID="11">
  </section>
  <section name="Child 2 Text here" ID="12">
    <section name="GrandChild Text here"  ID="121" >
    </section>
  </section>
</section>

<section name="Parent 2 Text here" ID="2" >
  <section name="Child 1 Text here" ID="22">
  </section>
  <section name="Child 2 Text here" ID="23">
    <section name="GrandChild Text here"  ID="232" >
    </section>
  </section>
</section>         

I have to produce the below output XML -

<section name="Parent 1 Text here" ID="1" >
  <section name="Child 2 Text here" ID="12">
    <section name="GrandChild Text here"  ID="121" >
    </section>
  </section>
</section>

<section name="Parent 2 Text here" ID="2" >
  <section name="Child 2 Text here" ID="23">
  </section>
</section>

I have to achive above using XSLT 1.0 transformation. I was planning to pass a comma separated string as a parameter with value= "1,12,121,2,23"

My question- How to loop the comma separated parameter in XSLT 1.0 ? Is there a simpler way to achieve the above. Please remember I have to do this in XSLT 1.0 Your help is appreciated.