Cross domain Frame communication

[vt621]

We have 2 web application that display there information in 2 different frames (A & B). The javascript in A read the hidden fields of B and take some actions based on the values of the hidden fields. Also A is responsible to load the first page of B, B can have more than one page and command for A can be in any pages of B, The pages of B a are construct dynamically base on the current state of BEverything work fine when A and B come from the same domain.But in some case (Performance and Architeture of the application) we need to have A and B to come from 2 differents domain and in this case the Cross domain restriction do not allow A to read the B hidden field. I try tho use Access-Control-Allow-Origin but it seams do not work between 2 frames already loaded in the browser.Although you can think that is a security problem can be raise with this kind of applications, these application are designed to run on an intranet.Do someones has an idea for resolving the problemFrank