jQuery Soap Client (Large XML, Firefox Problem)

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XML

jQuery

Firefox

I Have an issue with a larga data received by a call of SoapClient with xml format. Work fine on IE, Chrome, Safari but Mozilla Firefox read only if records is less than 15.

Then script code is;

try {
var url = ' -- my service url -- ';
var pl = new SOAPClientParameters();
pl.add('userId', sessionStorage.getItem("filterUserId"));
SOAPClient.invoke(url, "getLogs", pl, true, returnLog)
}
catch(e) {
$.msg({ content: 'ERROR: ' + e , autoUnblock : false});
$('#divLoading').toggle('Hide');
}
function returnLog(returnValue) {

xmlDoc = $.parseXML(returnValue);
    $xml = $(xmlDoc);

$xml.find(nodeName).each(function() {	
		$field1 = $(this).find('historyId');
		$field1Value = $field1.text();    
                $field2 = $(this).find('taskDesc');
		$field2Value = $field2.text();    
	});;
         }

This is the XML Structure, I need 500 records aprox.

<logData>
<log>
<historyId></historyId>
<taskDate></taskDate>
<userFullName></userFullName>
<businessName></businessName>
<project></project>
<task> </task>
<totalHours></totalHours>
<taskDesc></taskDesc>
</log>
</logData>