how to test for the element type of the current node

Hi,

what expression do I use if I need to test the type of the current node
in a for-each loop?

Say I have a DTD that has	

	<!ELEMENT A (B|C)*>

and I want to write

<xsl:template match="A">
    <xsl:for-each select="*">
	<xsl:choose>
	    <xsl:when test="if this node is a B"> <--- this is what I can't figure out
		apply-templates for B

		...
	    <xsl:otherwise>
		do something else for C
    ...


I tried ".=B" inside the test, which doesn't work, I tried just "B", 
I tried "boolean(B)", nothing works.

Note that I believe that using <xsl:template match="B"> won't solve my problem
because I need to do something specific that I only need to if the 
B element is nested inside  the A element.

This seems such an elementary thing to do (!?), but maybe I still don't
understand XSL well enough to see an alternative.

Thanks!

	- Godmar


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