ToLowerCase or ToUpperCase in XSLT
This is a simple sample to show you how to transform the content of an element in an XML file from lower/upper case to upper/lower case
First of all define a variable of the element as:
<xsl:variable name="Title">
<xsl:call-template name="ToLowerCase">
<xsl:with-param name="Field" select="Title"/>
</xsl:call-template>
</xsl:variable>
Then define the Template that will do the transformation:
<xsl:template name="ToLowerCase">
<xsl:param name="Field" select="''"/>
<xsl:value-of select='translate($Field,"ABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwxyz")'/>
</xsl:template>
As you can see we are transforming all letters to lower case, the same can be done with a similar template to translate letters to upper case.
Hope this helps,
Regards