windowProxy.post(response) not send the messaje to parent page

[Gabriel Taneco]

My english is not good, sorry.
windowProxy.post inside iFrame's child is not working in the success ajax's call module, this ajax's call submited my form.

My code work well in Chrome but not in Safari, and i don't see why not.

Here my code:
https://gist.github.com/adb2389b83232cf43154
Thanks for your help!