<>

lt; gt;

<>

lt; gt;

<?xml version="1.0" encoding="utf-8"?>

<xsl:stylesheet  xmlns:xsl='http://www.w3.org/1999/XSL/Transform'
                version="1.0" xmlns:msxsl="urn:schemas-microsoft-com:xslt"
      xmlns:ex="http://www.example.com/" 
      exclude-result-prefixes="msxsl ex">

  <xsl:output indent="yes" />

  <msxsl:script language="VB" implements-prefix="ex">
    <![CDATA[
    function replaceb(str As String)
    return "<b>" & str & "</b>"
    end function
]]>
  </msxsl:script>

  <xsl:template match=".">
Это <xsl:value-of select="ex:replaceb('тест')"/>
  </xsl:template>
  
  
</xsl:stylesheet>

<xsl:value-of disable-output-escaping="yes" select="ex:replaceb('test')"/>