JQuery :: Content FadeOut .. Browser Backward Button

When clicking the menu links on my site I want the page main content to fade out just right before the linked page is loaded, this way..

$(document).ready(function () {
$('#topmenu a').click(function() {
$('div#main').fadeOut();
});
});

But when I click the browser backward button and it goes back to the page I was, its content remains faded out, which is kind of awkward.. I just want the page content fading in again if the browser backward button is clicked.