$("select.smenu").selectmenu({
        change: function( event, ui ) {
            if (this.id == 'category_id')
            {
                var catid = $(this).val();
                var cc_url = 'http://localhost/theo/10deka/public/ccfromcategory/'+catid;


                $.get(cc_url, function (data) {
                    var len = data.length;
                    $("select#cc_id").empty();
                    for (var i = 0; i < len; i++) {
                        var option = $("<option></option>").attr("value", data[i].id).text(data[i].name);
                        $("select#cc_id").append(option);
                    }
                });

                alert('change triggered '+catid);
            }
        }
    });