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

  <xsl:output method="html" encoding="UTF-8" />

  
  <msxsl:script
    language="JavaScript"
    implements-prefix="ext">
	<![CDATA[
    function convertToUnicode(unicode)
	{

     var tstr = unicode
     var bstr = '';
      for(i= 0 ; i < tstr.length; i++)
      {
       if(tstr.charCodeAt(i)> 127 ) 
        {
         bstr += '' + tstr.charCodeAt(i) + ';';
        } 
      else 
       {
        bstr += tstr.charAt(i);
       }
      }
      return (bstr);
    }
	]]>
	
 </msxsl:script>


  <xsl:template match="//Message">
    <xsl:variable name="str" ><xsl:value-of select="//Message" /></xsl:variable >
	<xsl:value-of select="ext:convertToUnicode(string('привет'))" disable-output-escaping="yes" /> 
  </xsl:template>

</xsl:stylesheet>