communication between two frames

Hello Guys,

I am designing a web application using GWT which has one
inner frame which loads different modules whenever user selects any
menu from TOP frame that is from a main window.

The problem where i have stuck now is whenever there is some error
occurred inside a frame which contains a different module then that
should notify main window about it. So I can handle all failure
messages in my main module.

If anyone has implemented it before or has some threads that u have
gone thr' then please do reply.

I had referred this http://gwt-ext.com/forum/viewtopic.php?f=2&t=2459
this works fine as it is opening a new window but i want to open a
frame inside a same window which sends messages to parent window
containing it.

--
Aditya

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