Preventing Firefox reload confirmation
Using
window.location=window.location;
Instead of
location.reload();
work for me.
window.opener.location.href = window.opener.location;
I've found the decision here
(Tested on Firefox 32 and Chrome 38 successfully.)
I solved this, and sent data as only GET instead of POST,
It my not suit all needs but it works....
I was also using location.reload();