Loop through elements within nested:iterate tag using javascript

Question

Hello,
I would like to loop through the adjustedLineItems list and set the checkbox values to true on click of a select all button.
I am getting the error document.all['adjustedLineItems.selected'] is null or not an object
however it works if I manually substitute values for i within the function
document.all['adjustedLineItems[0].selected'].checked=true;
document.all['adjustedLineItems[1].selected'].checked=true;
document.all['adjustedLineItems[2].selected'].checked=true;
Could someone please help me do this via a for loop?
Thanks
<nested:iterate name="invoiceForm" property="adjustedLineItems" id="adjli" type="com.bt.lex.common.lineItem.beans.LineItemDetailBean" indexId="idxadjli">
          <tr>
               <td class="dataLeft"><nested:checkbox property="selected"/></td>
               <td class="dataLeft"><nested:write property="liNumber"/></td>
          </tr>
</nested:iterate>
<script type="text/javascript">
function onclick_all(ctl) {
     var checkFlag = "false";
     var count = document.all.numOfAdjustedLIs.value;
     var i = 0;
     //alert(count);
     if(ctl.checked)
          if(checkFlag=="false")
               for (i = 0; i <count; i++)
                    document.all['adjustedLineItems[i].selected'].checked=true;
               checkFlag = "true";
</script>

Answer 1

Its got nothing to do with nested iterate tags :). However,
document.all['adjustedLineItems.selected'].checked=true;
The variable 'i' is not getting evaluated as is evident from the error message - document.all['adjustedLineItems.selected'].
The appearance of 'i' in the error message tells it all, right ? :)
So
document.all['adjustedLineItems[' + i + '].selected'].checked=true;should do the trick.
ram.