Looping through nested datasets

Question

My apologies in advance if this has been asked before, but the search function on these forums doesn't appear to be working at the moment...
Using: Spry 1.6.1
Dreamweaver CS5
IE 7 and 8, Firefox 4, and Chrome 10
The question:
I have a parent xml dataset, with two nested datasets, like this:
     var dsCourse = new Spry.Data.XMLDataSet("menu2.xml", "menu");
     var dsTopic = new Spry.Data.NestedXMLDataSet(dsCourse, "topic");
     var dsLessons = new Spry.Data.NestedXMLDataSet(dsTopic, "lesson");
The data displays properly in the html, using regions, etc. However, when I try looping through them using javascript:
     topics = dsTopic.getData();
     for (var t = 0; t < topics.length; t++) { //loop through the topics dataset
          dsTopic.setCurrentRowNumber(t);
          var top = dsTopic.getCurrentRow();
          alert('current topic row name: ' + top["@name"]); //for debug purposes, display the topic name
          var rows = dsLessons.getData();
          for (var i = 0; i < rows.length; i++) { //loop through the lessons dataset
                    dsLessons.setCurrentRowNumber(i);
                    alert("lesson name is: " + rows[i]['name']);//display the lesson name
It will perform both loops properly, displaying the correct information for each dataset in Firefox 4, but in IE 7 and 8, and in Chrome it will list each of the Topics correctly, but only displays the first set of lessons.
The xml looks like:
<topic name="Claims" default="true" complete="false">
        <lesson>
            <name>Getting Started</name>
            <score>0</score>
       </lesson>
        <lesson>
             <name>Adding a Claim</name>
             <score>0</score>
             </lesson>
        <lesson>
             <name>Adding a Claimant</name>
            <score>0</score>
        </lesson>
<topic name="Bills" default="false" complete="false">
         <lesson>
               <name>Bill Components</name>
                <score>0</score>
          </lesson>
etc.
For what it's worth, all of the topics and lessons display properly in the html using spry regions, etc. It only appears to have an issue in javascript. And then only in IE. Is there, perhaps, a better way to do this that I'm not aware of?
Thanks in advance!
Jonathan

Answer 1

This might help http://labs.adobe.com/technologies/spry/samples/data_region/NestedXMLDataSample.html
Gramps