XPath problem: Checking if imidiately preceding siblin

<root>
 <X><A a="1"/><A a="1"/><A a="2"/>Some text</X>
 <X><A a="4"/>Some text<br/>
       <A a="5"/>More text<br/>
       <A a="7"/>Even more text</X>
</root>

<xsl:template match="/">
 <xsl:apply-templates select="*"/>
</

<xsl:template match="A[1]">
<!-- This groups all the A elements in a given X element
This means that the second X gets the grouped too much -->
</

<xsl:template match="A">
<!-- This one does not group any of them -->
</

<xsl:choose>
 <xsl:when test="not('The preceding sibling is an A node')"/>
   <!-- Do something -->
 </
 <xsl:otherwise>
   <!-- At the moment do nothing -->
 </
</

Regards,
Ragulf Pickaxe :)