open Iframe from second page

[shoutout]

Good day all I have a contact form that opens up in a iframe on my home page. I have a second page with a link for contact and I would like to know If their is a javascript that when I press the contact link on the second page that it can go to the home page and open the iframe for the cntact form.

Please note I do not know javascript I am trying to learn it.


Thank you
Shoutout

[servlet]

Java is not javascript, the question belongs to javascript forum.