[xsl] MOD Every Other easy - but what about every 3rd

Subject: [xsl] MOD Every Other easy - but what about every 3rd
From: Karl Stubsjoen <kstubs@xxxxxxxxx>
Date: Thu, 20 Jan 2005 23:51:44 -0700
Hi,

Using MOD to determine odd rows is easy.  However, I'd like to have 3
alternating rows so need to recognize the 1st row, the 2nd row, the
3rd and start over.
So:

..blue row..
..red row..
..green row..
..blue row..
....and so on....

This didn't work:
<xsl:choose>
  <xsl:when test="position() mod 3 = 0">background_blue_fade</xsl:when>
  <xsl:when test="position() mod 2 = 0">background_green_fade</xsl:when>
  <xsl:otherwise>background_red_fade</xsl:otherwise>
</xsl:choose>

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