Is possible refresh a function every x seconds or refresh it on single event?

I explain:

I have a function that make pagination on my website, inside every div that are "pages" I have some pictures where I have added LightBox.

Everything works nice on the first div (page) but when I change the page it doesnt' work anymore.

I tried to fix in this way:

$('.pagination a').click(function () {
    initShadow();
});

In this way it work on the pageLoad and on the first page that I change, than it stop again.

So I need to fix this issue, everytime I change the "page" I would like it works fine.

Is possible to refresh a function every x second or to refresh it everytime I click on the pagination buttons?