Dynamic combo boxes

[Maya menon]

Hi all,
   
  I have a page which displays dynamic comboboxes.
  The records from DB will be displayed in table and two fields are getting 
displayed in comboboxes.
   
  Now, there is one condtion in which if user changes something in first 
combobox then value of second combobox should automatically change
   
  I am capturing the value of the first combobox using this.value, using 
logic:iterator, indexid and indexed=true to render the combo boxes.
   
  How can I capture the second combobox in this case ?
  How do I get the name of a dynamically rendered combobox in a javascript 
function
   
  Here is how the second combobox gets created
   
  <logic:iterate id="testdata" name="TestFormBean" property="testdata" 
indexId="index">
  <html:select name="testdata" indexed="true" property="isActive">
  <html:options name="TestFormBean" property="listActions"/>;
  </html:select>
   
  Please provide inputs
   
  Thanks

       
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