????????bbar?????PagingToolbar????refresh()????????
???????????????????refresh()??????is not function"
?????????????????
moveNext()??????????????
???FireFox??????????
refresh()??????????????
??????????????????????????????????
?????????????????
===========================================
var paging = new Ext.PagingToolbar({
pageSize: 10,
store: datastore,
displayInfo: true
});
var grid = new Ext.grid.GridPanel({
...
bbar: paging
});
???????????
paging.refresh(); <==??????
===========================================