>I'm not sure what you mean by folding the values?

Converting them to a single case before comparing them. The translate() function can be used for this purpose; rather than comparing $a=$b, compare
        translate($a,"abcdefghijklmnopqrstuvwxyz","ABCDEFGHIJKLMNOPQRSTUVWXYZ")
        =
        translate($b,"abcdefghijklmnopqrstuvwxyz","ABCDEFGHIJKLMNOPQRSTUVWXYZ")

It's wordy but it should work.
______________________________________
Joe Kesselman, IBM Next-Generation Web Technologies: XML, XSL and more.  
"may'ron DaroQbe'chugh vaj bIrIQbej"  ("Put down the squeezebox and nobody gets hurt.")

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