Re: xsl:if

If the attribute value from the input xml is optional. how do i write my xsl:if so that if the value is present get the value else default to "unknown"

full syntax:
<xsl:choose>
	<xsl:when test="@value">
		<xsl:value-of select="@value"/>
	</xsl:when>
	<xsl:otherwise>
		<xsl:text>unknown</xsl:text>
	</xsl:otherwise>
</xsl:choose>

shortcut:
<xsl:value-of select="@value"/><xsl:if test="not(@value)">unknown</xsl:if>

regards,
--
Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041)
"Et ipsa scientia potestas est"  - Francis Bacon , Meditationes sacrae