exclude-result-prefixes problem

I am getting unwanted namespace declarations in my output. Here is my opening xsl:stylesheet tag:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:pmml="http://kiloNovember.com/ProjectManagementMarkupLanguage"
xmlns:date="http://exslt.org/dates-and-times"
exclude-result-prefixes="date">

As you can see, it declares the namespace "date" and then instructs the processor to exclude it in the output. At least that's what I think it does. Nonetheless the namespace declaration (and a second on that I have no clue as to where it originates) appears in each element that is placed into the output via <xsl:copy-of>.

Here is an example of one element from the output:

<pmml:name xmlns:date="http://exslt.org/dates-and-times" xmlns:func="http://exslt.org/functions">Task 1</pmml:name>

As you can see both the "date" and "func" namespace declarations are added. I didn't declare the "func" namespace in my stylesheet and it isn't declared in the included (via <xsl:include>) stylesheet, nor does the included stylesheet include a third stylesheet that might be the source of "func".

What am I missing?

-- 
Charles Knell
cknell@xxxxxxxxxx - email

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list