I'd like to not show a link on a day with an event, but instead just change the day number font properties, and the td colour etc, I guess it's something like below, but not sure what to test for in the IF statement.

<xsl:template name="createOneCell">
    <xsl:param name="cell"/>
    <td>
      
      <xsl:if test=" ???? ">
        <xsl:attribute name="class">eventfound</xsl:attribute>
      </xsl:if>
      
      <xsl:value-of select="date:dayinmonth($cell/@date)"/>
        <xsl:for-each select="$cell/event">
            <!--<a href="{umbraco.library:NiceUrl(@id)}">
              <xsl:value-of select="umbraco.library:GetXmlNodeById(@id)/@nodeName"/>
            </a>-->
        </xsl:for-each>
    </td>
</xsl:template>