Complex Layout: add a Tree or a Grid

[Romantik]

Hi dear Team.

help me please with my problem

I've got a complex Layout:
North - menu
West - for Tree (when some Trees - accordion)
Center and East - for Tabs with Grids

for the first time - only the Menu loaded
then by action of Menu need load (or add) a Tree in West or a Grid in Center

I want to send data and params of Tree or Grid from Server (via JSON) - not only data.

process by pictures:
1. start and select an action in Menu
2. click on Menu - load a Tree or Grid

so for the Tree need get:
- data (it's easy via JSON)
- params from config script (how???) <<-- each Action in Menu need other Tree(s)

for Grid need get from config file:
- data
- columns and his params (how???)

[Romantik]

anybody knows how set params (not data) of Tree or Grid from ServerSide ?