Merging 2 xml DOM trees

Question

Hi
I have an xml document which has the folowing format:
<RESULTS>
<DATA>
<ROWSET>
<ROW ID=1>
<A>1</A>
<B>30100</B>
<C>26380</C>
<D>99999</D>
<E>-311.78</E>
</ROW>
</ROWSET>
</DATA>
<FORMAT>
<ROWSET>
<ROW ID=1>
<A><STYLE>1</STYLE></A>
<B><STYLE>2</STYLE></B>
<C><STYLE>3</STYLE></C>
<D><STYLE>2</STYLE></D>
<E><STYLE>4</STYLE></E>
</ROW>
</ROWSET>
</FORMAT>
<RESULTS>
I now want to merge FORMAT and DATA to produce a new xml. I need to add the STYLE in FORMAT as an attribute to A, B, C, D and E by matching the ROW IDs making the new xml like
<RESULTS>
<DATA>
<ROWSET>
<ROW ID=1>
<A STYLE="1">1</A>
<B STYLE="2">30100</B>
<C STYLE="3">26380</C>
<D STYLE="2">99999</D>
<E STYLE="4">-311.78</E>
</ROW>
</ROWSET>
</DATA>
</RESULTS>
Can some1 come up with how this could be done?

Answer 1

Hi I actually want to add 1 of the subtree as an attribute to its corressponding elements in the other tree.
Like in this case:
<RESULTS>
<DATA>
<ROWSET>
<ROW ID=1>
<A>1</A>
<B>30100</B>
<C>26380</C>
<D>99999</D>
<E>-311.78</E>
</ROW>
</ROWSET>
</DATA>
<FORMAT>
<ROWSET>
<ROW ID=1>
<A><STYLE>1</STYLE></A>
<B><STYLE>2</STYLE></B>
<C><STYLE>3</STYLE></C>
<D><STYLE>2</STYLE></D>
<E><STYLE>4</STYLE></E>
</ROW>
</ROWSET>
</FORMAT>
<RESULTS>
STYLE which is a child element of A in FORMAT becomes the attribute of A in DATA. Is there any way to do this?