Matching empty tags

A small newbie question here:

How do I match an empty tag such as <TD/> so that I can do a transformation
on it. I would like it to be in the following template form but it doesn't
seem to work:

<xsl:template match="TD">
	<xsl:choose>
		<xsl:when test=".=''">
			<TD><xsl:text> </xsl:text></TD>
		</xsl:when>
		<xsl:otherwise>
			<xsl:copy>
				<xsl:apply-templates
select="@*|*|text()|comment()"/>
			</xsl:copy>
		</xsl:otherwise>
	</xsl:choose>
</xsl:template>

What I'm trying to do is convert any <TD/> tags into <TD>space
character</TD> Is this possible?

--
Ed Araquel

Mayo Foundation
200 1st St. SW - Siebens 7
Rochester, Minnesota
55905
(507) 538-1023



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