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$row = mysql_fetch_array($result, MYSQL_ASSOC);

header("Content-Type: text/xml");
?>
<?xml version="1.0" encoding="gb2312">

<paikeresult>
<classno-value><? echo trim($row['classno']); ?></classno-value>
<cid-value><? echo trim($row['cid']); ?></cid-value>
</paikeresult>

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var xmlDoc = request.responseXML;
 
var xmlClassno = xmlDoc.getElementsByTagName("classno-value")[0];
var classno = xmlClassno.firstChild.nodeValue;


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var xmlClassno = xmlDoc.document.getElementsByTagName("classno-value")[0];

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var xmlDoc = request.responseText
alert(xmlDoc )

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