Filtering menu item based on user click behaviour

Hello

I would like to design menu pages that when the user
click on
one of the category items,
URL that user will click on
  <catTitleUrl>javascript:sort('category[@title =
\'Technologies\']',
'title') </catTitleUrl>
 it will bring another new subject menu but the same
category menu on the
same pages with subject related to those category
items.
In my XSL file, I have been able to filter out
Category staticly in
  <xsl:if test="title[.='Technologies']">
As I browse all message, solution like this 
"{./@name}"
seems will work. But I have no idea do it.
I have read throught
http://msdn.microsoft.com/xml/xslguide/xsl-xform-filter.asp

any comment is welcome

thank you
sehat


==================  xsl file ======================

<?xml version="1.0"?>
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/TR/WD-xsl">
  <xsl:template match='/'>
<tr></tr>

<table width="800" bgcolor="#FFFFFF" border="0"
cellspacing="0"
cellpadding="2">
 <xsl:for-each select="portal/category">

  <a class="menuhead">
  <xsl:attribute name="href">
  <xsl:value-of select="catTitleUrl"/>
  </xsl:attribute>
  <xsl:value-of select="title"/>
  </a>
 </xsl:for-each>
</table>

<table width="800" bgcolor="#FFFFFF" border="0"
cellspacing="0"
cellpadding="2">
 <xsl:for-each select="portal/category">
  <xsl:if test="title[.='Technologies']">
   <xsl:for-each select="subject">
    <a class="menuitem">
    <xsl:attribute name="href">
    <xsl:value-of select="url"/>
    </xsl:attribute>
    <xsl:value-of select="title"/></a>
   </xsl:for-each>
  </xsl:if>
   <P></P>
 </xsl:for-each>
</table>

  </xsl:template>
</xsl:stylesheet>

================================================================
============== XML file ===============
<?xml version="1.0"?>
<portal>
 <category>
  <title>Technologies</title>
  <catTitleUrl>javascript:sort('category[@title =
\'Technologies\']',
'title') </catTitleUrl>
  <description>Technologies, Tools, Languages of
interest</description>
  <subject>
   <title>ASP</title>
   <url>twocol.asp?xmlsrc=../xml/aspContent.xml</url>
  </subject>
  <subject>
   <title>DHTML</title>
  
<url>onecol.asp?xmlsrc=../xml/dhtmlContent.xml</url>
  </subject>
  <subject>
   <title>Java</title>
   <url>onecol.asp?xmlsrc=../xml/JavaContent.xml</url>
  </subject>
</category>
  <category>
  <title>Applications</title>
  <catTitleUrl># </catTitleUrl>
  <description>Industry applications</description>
  <subject>
   <title>Call Center</title>
   <url>#</url>
  </subject>
  <subject>
   <title>Claims Processing</title>
   <url>#</url>
  </subject>
</category>
</portal>
=================================================

ps. (sample come from asptoday)


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