How to remove flashing on persisting remotely populated jqgrid tree node

jqGrid tree nodes are read from server using json data. Click in node reads child nodes from server.
Code below is used to restore opened tree node if page is loaded.
Only single node is opened always in tree.
Controller assings node ids to autoClicked array and gridComplete opens nodes using this path.
This causes grid flasinging on page load since multiple server requests buid grid multiple times.
How to disable grid flashing ?
Is it possible to prevent multiple jqGrid building and show only find jqGrid tree ?

Custom form authentication / Authorization scheme in ASP.net MVC

I am trying to create a custom authentication scheme in ASP.NET MVC using form authentication. The idea that I might have different areas on the site that will be managed – approver are and general user area, and these will use different login pages, and so forth. So this is what I want to happen.