Connect parent window to existing iframe

[Roman Zaharenkov]

Hi to all,

Can anybody please help me. I used easyXDM to communicate with
existing iframe as you advised. I received message in helper frame and
then forwarded it to the right frame by using
parent.frames['target_frame_name'].

But suddenly one day chromium sad me:

"Unsafe JavaScript attempt to access frame with URL https://provider.mydomain.com:444/
from frame with URL https://consumer.mydomain.com:453/easyXDM/index.html.
Domains, protocols and ports must match."

My page has the following structure

main page (https://consumer.mydomain.com:453):
provider frame (https://consumer.mydomain.com:453) - loaded by
myself, not by easyXDM
helper frame (https://consumer.mydomain.com:453/easyXDM/index.html)
- helper frame loaded by easyXDM I used as proxy

So now current frame can not access to provider by calling
parent.frames['target_frame_name']. It returns undefined and browser
show me message I posted above.

What is realy strange for me: I don't want access parent itself I just
want to access same origin frame.

Thanks, Roman