Trying to add a linebreak

I have a tag that contains a comment string.  I want to be able to 
search that string and look for a '#' and whenever I see this, I want 
to add a line break <br>.  I was trying to do it by the following code, 
but found that the line break occurs ONLY after the first '#'.  Can 
anyone suggest a way I can make this work?

<xsl:variable name="certcomments" select="//cert_comments"/>
<xsl:if test="contains($certcomments,'#')">	
	<xsl:value-of 
select="substring-before($certcomments,'#')"/><br></br>
	<xsl:value-of select="substring-after($certcomments,'#')"/>
</xsl:if>

Thank you!  Your help is much appreciated.

Jitt



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