Replace $ with $$

Hi, I am working on an XSLT stylesheet which transforms XHTML into WML.
However, a dollar sign is used to indicate the beginning of a variable in
WML.  In order to represent a dollar sign character, a sequence of two
dollar signs must be used.

Right now I am using the following template to replace $ with $$, but I know
that it will only apply to the first $ in the text node.  How can I modify
the following template to make the processor replace all the $ within the
same text node?


<xsl:template match="text()">
 <xsl:choose>
  <xsl:when test="contains(., '$')">
   <xsl:value-of select="concat(substring-before(.,
'$'),'$$',substring-after(., '$'))"/>
  </xsl:when>
  <xsl:otherwise><xsl:value-of select="."/></xsl:otherwise>
 </xsl:choose>
</xsl:template>


Thanks in advance.

Michael Lee


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