[<a href="../html_no_frames" target="_top">No frames</a>]
</xsl:when>
<xsl:otherwise>
- [<a href="../html_yes_frames" target="_top">Frames</a>]
+ [<a href="{$path_to_top}/../html_yes_frames" target="_top">Frames</a>]
</xsl:otherwise>
</xsl:choose>
</p>