This template will truncate a phrase at a maximum length, with the option to truncate on a word boundary

globalReplace

  <!-- http://aaronland.info/xsl/string/truncate-phrase -->
  <!-- This template will truncate a phrase at a maximum length, with the option to truncate on a word boundary -->
  <xsl:template name="globalReplace">
		<xsl:param name="outputString"/>
		<xsl:param name="target"/>
		<xsl:param name="replacement"/>
		<xsl:choose>
			<xsl:when test="contains($outputString,$target)">
				<xsl:value-of select="concat(substring-before($outputString,$target),$replacement)"/>
				<xsl:call-template name="globalReplace">
					<xsl:with-param name="outputString" select="substring-after($outputString,$target)"/>
					<xsl:with-param name="target" select="$target"/>
					<xsl:with-param name="replacement" select="$replacement"/>
				</xsl:call-template>
			</xsl:when>
			<xsl:otherwise>
				<xsl:value-of select="$outputString"/>
			</xsl:otherwise>
		</xsl:choose>
	</xsl:template>