question about a non-trivial apply-templates

Hi all..

How can I this? 

I have an XML, for example,

<rowset>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>1</field3>
  </row>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>1</field3>
  </row>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>2</field3>
  </row>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>2</field3>
  </row>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>3</field3>
  </row>
  <row>
    <field1>....</field1>
    <field2>....</field2>
    <field3>3</field3>
  </row>
</rowset>

Notice the value of field3 in each <row>.

I want to program an XSL that generates an HTML page that has 3 separate 
sectors, one for each value of field3. Each sector has exactly the same 
structure, more or less this way:

sector 1 (when field3 evaluates to 1)
   row1
     label1 = value1
     label2 = value2
   row2
     label1 = value1
     label2 = value1
<blank space>
sector 2 (when field3 evaluates to 2)
   row1
     label1 = value1
     label2 = value2
   row2
     label1 = value1
     label2 = value1
<blank space>
sector 3 (when field3 evaluates to 3)
   row1
     label1 = value1
     label2 = value2
   row2
     label1 = value1
     label2 = value1


I could do it if I generate an XML with the 3 sectors separately and calling 
apply templates for each, but in this case, that XML is built by mean of an 
Oracle query, so I cannot modify it.

Any help?
Thanks a lot in advance

Jaime

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