> 1.  To add a comment (AS below lt IE7)

I just replied saying to use xsl:comment but I see you don't want a
comment you want

    <![endif]-->


which isn't a comment it;s a syntax error (not that there is any point
arguing that case with IE:-) XSLt can not generate that without using
disable-output-escaping

 <xsl:text disable-output-escaping="yes">&lt;![endif]--></xsl:text>

David


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