I tend to avoid generate-id() for this as it makes recreating the same
ids if the source is edited (or even if it is not) very hard, which
means people#s bookmarks get messed up if you regenerte.
One fairly robust way is to go

<xsl:attribute name="id">
  <xsl:text>id.</xsl:text>
  <xsl:number count="*" level="multiple"/>
</xsl:attribute/>



which makes ids of the form id="id.5.1.4.2"

obviously there is some flexibility on the attributes to xsl:number, so
that for example you can use the same numbering as sections if you want,
so section 3.5 gets an id of sect.3.5.

David


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