avail.addAll(_listbox.getHeads());
final Listfoot listfoot = _listbox.getListfoot();
if (listfoot != null) avail.add(listfoot);
final Paging paging = _listbox.getPagingChild();
if (paging != null) avail.add(paging);
final Frozen frozen = _listbox.getFrozen();
if (frozen != null) avail.add(frozen);
int pgsz = limit;
int ofs = offset;