fillup the multicombobox on one combo selected value

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I am unable to fillup the other combo on selected value event of predecessor 
combo value. But when i draw a simple html dropdown it does work.
Please help me i am very near to complete the task i dont want to jump to some 
other jquery tool.

 $("#s5a2").dropdownchecklist({ firstItemChecksAll: true, explicitClose: '<i>...close</i>', onComplete: function (selector) {
                // var justChecked = checkbox.prop("checked");
                // var checkCount = (justChecked) ? 1 : -1;
                values = '';
                for (i = 0; i < selector.options.length; i++) {
                    if (selector.options[i].selected && (selector.options[i].value != "") && selector.options[i].value != "(all)") {
                        if (values != "") values += ";";
                        values += selector.options[i].value;
                    }
                }
                if (values != '') {
                    alert(values);
                    var cuisines = ["Chinese", "Indian"];
                    var sel = document.getElementById('test');
                    for (var i = 0; i < cuisines.length; i++) {
                        var opt = document.createElement('option');
                        opt.innerHTML = cuisines[i];
                        opt.value = cuisines[i];
                        sel.appendChild(opt);
                    }
                }
            }
            });

Original issue reported on code.google.com by paul.and...@gmail.com on 11 Jul 2013 at 10:27