Distinct items?

Hi,

I would like to retrieve a list of items such as:

1998 1999 2000

from the following XML:

<projects>
	<item>
		<year>1998</year>
	</item>
	<item>
		<year>1998</year>
	</item>
	<item>
		<year>1999</year>
	</item>
	<item>
		<year>2000</year>
	</item>
	<item>
		<year>2000</year>
	</item>
</projects>


I have tried:

<xsl:for-each select="projects/item">
<xsl:variable name="x" expr="year"/>
	<xsl:if test='not(from-following-siblings(*[year=$x]))'>
		<xsl:value-of select="year"/>
	</xsl:if>
</xsl:for-each>

which was modified from an example written to this list in 1999 (http://www.biglist.com/lists/xsl-list/archives/199907/msg00225.html), but that doesn't work in the MSXML3 parser.  I receive the error:

'following-siblings' is not a valid XSLT or XPath function. not(-->from-following-siblings(*[year=$x])<--)

any ideas on how I can make this work for this parser?

Thanks!
--Eric


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