I have a problem with a bit XSLT that outputs the children of the current page in a nice set of li's and all wrapped up in div which makes it all look nice on the page. Here is the XSLT (just from the interesting bit down)

<!-- Standard stuff above here removed for the sake of brevity -->
<xsl:variable name="level" select="2"/>

<xsl:template match="/">

 <div id="smarg">
   <div id="snav">
 <h2>Further Information</h2>
  <ul>

<xsl:for-each select="$currentPage/ancestor-or-self::node [@level=$level]/node [string(data [@alias='umbracoNaviHide']) != '1']">
 <li>
        <a href="{umbraco.library:NiceUrl(@id)}">
       <xsl:if test="$currentPage/ancestor-or-self::node/@id = current()/@id">
         <xsl:attribute name="class">LinkSelected</xsl:attribute>
      </xsl:if>
           <xsl:value-of select="@nodeName"/>
      </a>
    </li>
</xsl:for-each>

  </ul>
   </div>
</div>
<div id="sfoot"><!-- Foot --></div>

</xsl:template>

The problem is that if there is no child to output, I don't want the divs and stuff around it all to be output at all. 

It's like I need to put a big IF around it all to test if the for-each is going to loop at all.Is that the solution? How do i do that?