radgridcombo: get checkbox value in JS

[Kid]

Hello,

I have a RadGridCombo populated with checkbox items. When I click a specific item, I want to enable another RadGridCombo box. My problem in my javascript code is I'm unable to retrieve the value of the checkbox item I click. Take a look:

function onCheckBoxClick(chk)

            { 

                // YEEAAH JAVASCRIPT PROGGING!!!1

                var combo = $find("<%= cboPolicyScope.ClientID %>");

                var agencylist = $find("<%= cboUserAgencies.ClientID %>");

                

                //holds the text of all checked items

                var text = "";

                //holds the values of all checked items

                var values = "";

                //get the collection of all items

                var items = combo.get_items();

                //enumerate all items

                for (var i = 0; i < items.get_count(); i++)

                {

                    var item = items.getItem(i);

                    var values = $telerik.findValue(item.get_value(), "cboScope");

                    //get the checkbox element of the current item

                    var chk1 = $get(combo.get_id() + "_i" + i + "_cboScope");

                    if (values == "*")

                    {

                        agencylist.enable();

                        break;

                    } else {

                        agencylist.disable();

                    }

                }

            }

function onCheckBoxClick(chk)
            {
                var combo = $find("<%= cboPolicyScope.ClientID %>");
                var agencylist = $find("<%= cboUserAgencies.ClientID %>");

                //holds the text of all checked items
                var text = "";
                //holds the values of all checked items
                var values = "";
                //get the collection of all items
                var items = combo.get_items();
                //enumerate all items
                for (var i = 0; i < items.get_count(); i++)
                {
                    var item = items.getItem(i);
                    var values = $telerik.findValue(item.get_value(), "cboScope");
                    //get the checkbox element of the current item
                    var chk1 = $get(combo.get_id() + "_i" + i + "_cboScope");
                    if (values == "*")
                    {
                        agencylist.enable();
                        break;
                    } else {
                        agencylist.disable();
                    }
                }
            }

Ignore the unused variables, I was trying to finagle a method to get the data but no success. Anyone know a better way to do this? 

Thanks very much for any help -- I've looked over every source regarding RadGridCombo and the demos/templates.