set focus to iframe body/content in firefox?

Question

i have an ifram, which has hidden visibility. i click on button - iframe will be visible and i want to focus on its body/content. because now i must click on button and then into iframe, so thats two clicks. i want to do it on one click, but dont know how to focus in firefox.

in explorer it is ok:

var iframe_window = window.frames["myFrame"];
iframe_window.document.body.focus();

try lot of examples for firefox, but they dont work. anybody know how to do it in firefox ? thanks.

Answer 1

Try to set the focus to iframe_window first and to your actual content next:

iframe_window.focus();
iframe_window.contentDocument.body.focus();