How to open Modalpopup of a page from another page event

Question

There is one modalpopup exists on index.aspx page and its working fine.

Is that possible when click a button on other page (say about.aspx) it will redirect to index page and open the modal popup?

 

There is a modal popup in index.aspx and i just want to open that modal popup when button is clicked in about.aspx page. And for that i want to redirect from about to index page and open that modal popup.

 

Please share your opinion.
Thanks in advance.