Looking for popunder tab script

I’m looking for a script that can do this: When a user visits your site it open a new tab in the background that redirects them to a different site while the current tab is still on focused.

It must work on all major browsers!

I’m not sure if there’s any at CodeCanyon but if you google, you could find some free ones

Can you tell me the keyword you use? cause all I found is popunder window scripts and I want a popunder tab script