Layout case

Hey everyone,

 I m doing link_to_remote - which updates "main" div id inside my 

layout.
But new content is displayed with just a background from “main” div
rest of style is gone (rounded corners and internal class to this one
for text style ) can anyone give me a clue why is it so? - Pointer to
some good tutorial about that would be more that appriciated.

Cheers,
Lukasz