[xsl] [XSL] Using Sort and Position Function

[Alice Wei <ajwei@xxxxxxxxxxx>]

Dear all:

 I am trying to output HTML that sorts the items according to a 
particular attribute, and then apply it using position() to display it.

Here is my XML:

   <application>
               <ability rank="1">Adobe Acrobat Professional</ability>
               <type>Graphic Design</type>
           </application>
           <application>
               <ability rank="2">Ulead Video Studio</ability>
               <type>Graphic Design</type>
           </application>
           <application>
               <ability rank="2">Dreamweaver</ability>
               <type>Graphic Design</type>
           </application>
                 <!--More code-->
       </computer>

The XSL:

   <xsl:template match="application">
       <xsl:for-each select=".">
           <xsl:sort select="@rank" order="ascending"/>
           <span>
               <xsl:attribute name="title">
                   <xsl:value-of select="type"/>
               </xsl:attribute>
               <xsl:value-of select="ability"/>
           </span>
           <xsl:choose>
               <xsl:when test="position( ) !=last( )">, </xsl:when>
               <xsl:otherwise><!--Don't display anything--></xsl:otherwise>
           </xsl:choose>
       </xsl:for-each>
   </xsl:template>

This stylesheet works. The only problem is that I want the second to 
last to last element to use and instead of a comma, and I tried putting 
it in the <xsl:otherwise> tags. Didn't work as I thought, though.

Anyone know how I fix this?
Thanks in advance to any who could help.

Alice Wei
MIS 2008
School of Library and Information Science
Indiana University Bloomington