Save the state of the menu in the Simple Sidebar

In this example: http://startbootstrap.com/template-overviews/simple-sidebar/

What is needed so that the menu does not return to be visible when the page is refreshed?

Because what happens is that when:

(1) menu visible / refresh page / menu visible
(2) menu hidden / refresh page / menu visible

1, is ok, but 2 it's wrong. The correct would be:

(2) menu hidden / refresh page / menu hidden