Hi. I'm using XSLT 1.0.

I have the following 3 inputs:
<Ball color='yellow'>big</Ball>
<Ball Color='Green'>Small</Ball>
<Ball COLOR='RED'>MEDIUM</Ball>

How do I get the value of 'color' attribute by ignoring the cases (lower, mix, upper)?

This is what I have so far:
<xsl:template match="Ball">
<xsl:value-of select='normalize-space(@color)'/>
</xsl:template>

You really need XSLT 2.0 to do this properly, but so long as your text is ascii-only, you can normalize case using translate(., 'ABCDEFGH...Z', 'abcdefgh...z')

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference