How can I leave focus on the main window?

Question

JavaScript

Hey!
I am opening a small window in js via open.window . There is some kind of loading, waiting for user actions.
But this window opens everywhere on top of the main window. I read that you can use some magic through Flash to focus the main window so that the small one is behind. Though not in all browsers.
Can you at least tell which letter the magic method is applied to in ActionScript?
For example, you need to play the animation in Flash or something else.
Thank you.

Answer 1

Not ActionScript, but js version - execute window.opener.focus() in the child window