group but keep order of elements

Hallo,
and sorry for my simple question. I wasn`t able to get the answer at dawson or in the archive. I am not a programmer, just a person in a publishers house dealing with xml exports and now with the need of gaining any xslt knowlegde.
My problem  is always the beginning, where to start. 

A few weeks ago I had a question concerning adding elements. I have an xml document with numerous entries. Some do have the element <UbNummer> and some don`t.
Therefore I needed a solution to add a new element <texteintrag> to these elements without <UbNummer>. I continued with adding the element <uebung> at the equivilant position before the entry with <UbNummer>. 
Now I was asked whether it is possible to put the elements <texteintrag> and <uebung> not around every entry, but around all entries up to the next change. Actually it is grouping, but I do not know how to keep the order of my entries. Is it possible to continue from where I am now or do I have to change my code entirely?


The wanted result:

<total>
	<texteintrag>
	   <entry>
	 		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
			</Fundstelle>
		</MAT>
		<LO>
			<TitelEins></TitelEins>
		</LO>
	</entry>
	<entry>
	 		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
			</Fundstelle>
		</MAT>
		<LO>
			<TitelEins></TitelEins>
		</LO>
	</entry>
...
     </texteintrag>
     <uebung>	
	<entry>
	  	<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
				<UbNummer>1</UbNummer>
			</Fundstelle>
		</MAT>
		<LO >			
			<Text></Text>
		</LO>
	  	<entry>
	  	<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
				<UbNummer>1</UbNummer>
			</Fundstelle>
		</MAT>
		<LO >			
			<Text></Text>
		</LO>
	</entry>
...
  </uebung>
<texteintrag>
...
</texteintrag>
<uebung>
...
</uebung>
...
</total>

The Original:

<total>
	<entry>
		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
			</Fundstelle>
		</MAT>
		<LO>
			<TitelEins></TitelEins>
		</LO>
	</entry>
	<entry>
		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
				<UbNummer>1</UbNummer>
			</Fundstelle>
		</MAT>
		<LO >			
			<Text></Text>
		</LO>
	</entry>
...
</total>


My stylesheet:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="no"/>
<xsl:template match="entry[not(MAT/Fundstelle/UbNummer)]">
<xsl:copy>  
<texteintrag>
<xsl:apply-templates/>
</texteintrag>
</xsl:copy>
</xsl:template>
<xsl:template match="entry[(MAT/Fundstelle/UbNummer)]">
<xsl:copy>  
<uebung>
<xsl:apply-templates/>
</uebung>
</xsl:copy>
</xsl:template>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>

After the transformation:

<total>
	<entry>
	  <texteintrag>
		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
			</Fundstelle>
		</MAT>
		<LO>
			<TitelEins></TitelEins>
		</LO>
	 </texteintrag>
	</entry>
	<entry>
	  <uebung>
		<MAT>
			<Fundstelle>
				<TitelNr></TitelNr>
				<UbNummer>1</UbNummer>
			</Fundstelle>
		</MAT>
		<LO >			
			<Text></Text>
		</LO>
	   </uebung>
	</entry>
...
</total>

Even if it is simple I would be quite happy to recieve an answer.

Best Regards
Elke Naraschewski




 
*******************************************************
Elke Naraschewski - Ernst Klett Verlag GmbH -
Leistungscenter Mediengestaltung

Rotebühlstr. 77 - 70178 Stuttgart
Tel.: 0711/6672-1116 - Fax: 0711/6672-2023 - E-mail:
e.naraschewski@xxxxxxxxxxxxx

Stuttgart HRB 10746 - Verleger: Dr.h.c. Michael Klett
Geschäftsführer: Johannes Leßmann - Harald Melcher - Dr. Tilmann Michaletz - Dr. Wolf Unkelbach (Vorsitz)





*******************************************************
Elke Naraschewski - Ernst Klett Verlag GmbH -
Leistungscenter Mediengestaltung

Rotebühlstr. 77 - 70178 Stuttgart
Tel.: 0711/6672-1116 - Fax: 0711/6672-2023 - E-mail:
e.naraschewski@xxxxxxxxxxxxx

Stuttgart HRB 10746 - Verleger: Dr.h.c. Michael Klett
Geschäftsführer: Johannes Leßmann - Harald Melcher - Dr. Tilmann Michaletz - Dr. Wolf Unkelbach (Vorsitz)


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list