如何实现XML XSL javascript数据排序

数据排序模版
<?XML version="1.0" encoding="gb2312" ?>
<xsl:stylesheet version="1.1" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
<xsl:output method="html" />
<xsl:param name="queryParam" select="''" />
<xsl:template match="/guestbook">
<table border="0">
<tbody>
<tr>
<td>
<table width="400" border="0">
<tbody>
<xsl:apply-templates select="article">
<xsl:sort select="datadate" order="descending" />
</xsl:apply-templates>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</xsl:template>
<!--文章列表模版:-->
<xsl:template match="article">
<xsl:choose>
<xsl:when test="position() mod 2 = 1">
<tr bgcolor="#cccccc">
<th align="left" width="50">作者</th>
<th align="left" width="50">
<xsl:value-of select="author" />
</th>
<th align="left" width="100">发表时间</th>
<th align="left" width="50">
<xsl:value-of select="datadate" />
</th>
</tr>
<tr bgcolor="#cccccc">
<td colspan="4">
<xsl:value-of select="content" />
</td>
</tr>
</xsl:when>
<xsl:otherwise>
<tr>
<th align="left" width="50">作者</th>
<th align="left" width="50">
<xsl:value-of select="author" />
</th>
<th align="left" width="100">发表时间</th>
<th align="left" width="50">
<xsl:value-of select="datadate" />
</th>
</tr>
<tr>
<td colspan="4">
<xsl:value-of select="content" />
</td>
</tr>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>

数据文件
<?xml version="1.0" encoding="gb2312"?>
<guestbook>
<article id="73a7a287-aef6-4d35-ac2c-638ca3233be6">
<author>guest</author>
<datadate>20060812</datadate>
<content>asdfsad</content>
</article>
<article id="84957008-4cb4-4c96-bafa-775dd33e10cf">
<author>guest</author>
<datadate>20060812</datadate>
<content>fffff</content>
</article>
<article id="91426bb3-3bbf-4176-be66-c92cb79bb171">
<author>guest</author>
<datadate>20060812</datadate>
<content>fffff</content>
</article>
<article id="8e3bda3f-7d6e-4ae3-af0a-740a884cbf06">
<author>guest</author>
<datadate>20060812</datadate>
<content>asdf</content>
</article>
<article id="d6528172-cd03-4333-bb42-0121effca2ff">
<author>guest</author>
<datadate>20060812</datadate>
<content>asdf</content>
</article>
<article id="cd30a893-f0aa-44be-b56b-32a1aa44717a">
<author>guest</author>
<datadate>20060812</datadate>
<content>asdf</content>
</article>
<article id="b47ca7e6-93e0-4992-97fa-78ea557b0252">

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