Keep pop-up open after submiting value

Keep pop-up open after submiting value

I have a pop up, in which users can upload a picture. The problem is that
the pop-up closes after downloading the picture, and I have to re-click
"open the pop-up" to see the picture. Do you know a way to keep open a
pop-up, after performing such operations? For your information, I use a
javascript pop-up.