Re: Use of variables

 
 <xsl:variable name="ridval"  select="substring-after('aff',$ridsval)"

You probably want the arguments to substring-after in the other order.

   <xsl:attribute name="{$ridval}">RID VAL</xsl:attribute>
xsl:attribute can only add attribute nodes if no child nodes of the
current element have been added. Ie typically it has to come immediately
after the opening of an xsl:element, an xsl:copy or a literal result
element. You have it at the top level of the author template, which
might possibly work for one author, but not its siblings. If you
uncomment the xsl:element it can't work as then the xsl:element will
have added a child node.
 
> <xsl:variable name="ridsval" select="@rids[(letter+ digit+)]" />

No regexp in xslt.
You could use an extension function to use java regexp library, in which
case
it would look something like
<xsl:variable name="ridsval" select="@rids[myfun:foo(.)]" 

where myfun is the java extension namespace for your system and foo() is
a java function that accepts a node set and returns true if its string
value matches the regexp that you want to test. (Someone else will have
to provide the function:-)

David


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