RJS concurrency problems with lists

Folks,

I'm using RJS to add and remove rows from a list of items. Ideally,
when the list is empty, there should be a single row "You have no
items", otherwise the list looks confusing with the header but no
items. Does anyone have a recipe for doing this?

Options include:

1. Update add and remove RJS templates to query the DB to get the item
count, and remove/add the special row as necessary. Has concurrency
issues.

2. When the page is initialized, put the display item count into the
session, and update add/remove actions to keep it up-to-date. Update
RJS templates as per option 1.

3. Implement a javascript function that takes the id of a list and
iterates over its children, inserting the "You have no items" row if
none.

I'm leaning towards option 2, but if there is a cleaner approach that
would be awesome.

Cheers,
Chris

Chris,

The "you have no items" row could always be there. Just style it with
relative positioning such that it sits _under_ (z-index) the first
_real_ row of your list.

Cheers,
Ken

Works perfectly. Thanks!

Cheers,
Chris