Hi,
 I have to display radio buttons in my page usin xslt like this:
The problem is that I have to display the radio button only if the value in a particular node is NOT null/blank etc. How do I do it??? Please help.

The xml is as follows:
   <quizbody>
      <sectiontitle>College Mathematics</sectiontitle>

      <subsectiontitle>
      </subsectiontitle>

      <subsectiondesc>
      </subsectiondesc>

      <sectionpassage>
      </sectionpassage>

      <quizqna>
         <quizq>
            If n is an odd integer, which of the following must be odd?
         </quizq>

         <quiza>
            a)n + 1
         </quiza>

         <quizb>
            b) (n + 1)
            ²

         </quizb>

         <quizc>
            c) n
            ²

         </quizc>

         <quizd>
            d) n
            ²

            + 1
         </quizd>

         <quize>e) This is the answer</quize>

         <quizanswer>e</quizanswer>

         <quizexplanation>ans is b</quizexplanation>
      </quizqna>
   </quizbody>
The xslt is as follows:

 <xsl:element name="input">
   <xsl:attribute name="type">radio</xsl:attribute>
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="value">a</xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
  </xsl:element> <xsl:apply-templates select="quiza"/>
<br/>

  <xsl:element name="input">
   <xsl:attribute name="type">radio</xsl:attribute>
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="value">b</xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
  </xsl:element> <xsl:apply-templates select="quizb"/>
<br/>

  <xsl:element name="input">
   <xsl:attribute name="type">radio</xsl:attribute>
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="value">c</xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
  </xsl:element> <xsl:apply-templates select="quizc"/>
<br/>

  <xsl:element name="input">
   <xsl:attribute name="type">radio</xsl:attribute>
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="value">d</xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
  </xsl:element> <xsl:apply-templates select="quizd"/>
<br/>

I do wish that lecturers could find a more interesting exercise to give their students than these quizzes - they get rather boring after a while.

Note first that you can write this:

  <xsl:element name="input">
   <xsl:attribute name="type">radio</xsl:attribute>
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="value">b</xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
  </xsl:element> <xsl:apply-templates select="quizb"/>

like this:

<input type="radio" value="b">
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
</input>

To make it conditional, just wrap it in xsl:if:

<xsl:if test="not(particular_node='')">
<input type="radio" value="b">
   <xsl:attribute name="name">q<xsl:number count="quizbody"/>_<xsl:number count="quizqna"/></xsl:attribute>
   <xsl:attribute name="onclick">Engine(<xsl:number level="any"/>, this.value)</xsl:attribute>
</input>
</xsl:if>



Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference