reacting click listitems checkboxlist

i ask explanation page containing checkboxlist control user checks unchecks sole checkbox items. say, instance boldly arrangement bury associated control.

i came adult proceed controlling asp.net 2.0 callback apparatus (ajax) multiple client-side javascript server-side explanation code-behind. however, fortitude unequivocally bullet-proof (i.e. many approaching suffers timing issues). portable, since formula needs know consecutive ids sole items, etc.

the formula i came adult distant twin functions, doing onclick event, guess returned callback twine :

<script type="text/javascript">

function oncheckboxclicked()
{
    // gathers semi-colon distant list labels,
    // compared now checked items

    var texts = '';

    // iterate over any sole checkbox item
    // equipment checkboxlist sequential, so
    // stop iteration during initial blank method number

    (var index = 0; index < 99; index++)
    {
        var checkbox = document.getelementbyid('ctl00_cphadmin_cblcategories_' + index);
        (checkbox == null)
            break;

        (checkbox.checked)
        {

            // tag compared tide checkbox item

            var labels = document.getelementsbytagname('label');
            (var index_ = 0; index_ < labels.length; index_ ++)
            {
                (labels[index_].htmlfor == checkbox.id)
                {
                    texts = texts + labels[index_].innerhtml + ';';
                    break;
                }
            }
        }
    }

    // perform callback request
    // outcome processed updatecheckboxes function

    webform_docallback('__page', '_checkbox' + texts, updatecheckboxes, 'checkbox', null, loyal /* synchronous */);
}
</script>

in example, checkboxes review categories blog post.

i need slight indirect callback twine containing list semicolon-separated names checkboxes check/uncheck, method certain associated parent/child categories synchronized correctly. twine law explanation executed server.

in cases, indirect callback twine competence something else.

<script type="text/javascript">

function updatecheckboxes(returnmessage, context)
{
    (returnmessage == zero || returnmessage == '')
        relapse ;

    // iterate over any sole checkbox item
    // equipment checkboxlist sequential, so
    // stop iteration during initial blank method number

    (var index = 0; index < 99; index++)
    {
        var checkbox = document.getelementbyid('ctl00_cphadmin_cblcategories_' + index);
        (checkbox == null)
            break;

        // tag compared tide checkbox item

        var tag = '';
        var labels = document.getelementsbytagname('label');
        (var index_ = 0; index_ < labels.length; index_ ++)
        {
            (labels[index_].htmlfor == checkbox.id)
            {
                tag = ';' + labels[index_].innerhtml + ';';
                break;
        }
    }

        // perform tradition guess formed contents
        // returned callback string

        // instance, here check presumably returnmessage
        // contains twine ';' + tag + ';'


        (returnmessage.indexof(label, 1) > 0)
        {
            // something
        }        
    }
}

</script>

isn't there some-more glorious fortitude problem?