CheckFirstLetter.xsl

<!-- Get the first character of the title (example: If 'accounting' this will return 'A') -->
<xsl:variable name="current-letter" select="upper-case(
						substring(
							$page-content/document/ouc:properties/parameter[@name='database-name'],1,1
							)
					)"/>					

<!-- If previous data file exists, get it, else leave the variable $previous-letter as blank -->
<xsl:variable name="previous-letter">
	<xsl:if test="preceding-sibling::file[1] != ''">
		<xsl:value-of select="upper-case(
					substring(
						doc(concat($data-location,'/', preceding-sibling::file[1]))/document/ouc:properties/parameter[@name='database-name'],1,1
						)
					)" />
	</xsl:if>
</xsl:variable>

<!-- If the first character of the previous title does not equal the first character of the current title, display a header -->
<xsl:if test="$previous-letter != $current-letter">							
	<h2 class="break-above"><xsl:value-of select="$current-letter" /></h2>
</xsl:if>