Add & remove active class from a navigation link

I have been looking for tutorials on how to add and remove a class from a link unfortunately without any success. All the earlier questions on this have give me some understanding, but haven't give me the result I want to accomplish.

I'm trying to have an active state for my navigation, by adding and removing a class when the link is clicked.

Here is what I have as far as JavaScript:

$(document).ready(function(){

    //active state  
    $(function() {
        $('li a').click(function(e) {
            e.preventDefault();
            var $this = $(this);
            $this.closest('li').children('a').removeClass('active');
            $this.parent().addClass('active');

        });
    });
});

And this is my navigation:

<div id="nav">
    <div id="main-nav" class="center">
        <ul>
            <li><a href="/photography.php">Photography</a></li>
            <li><a href="/web.php">Web</a></li>
            <li><a href="/print.php">Print</a></li>

            <li class="nav-R"><a href="/about.php">About</a></li>
            <li class="nav-R"><a href="/contact.php">Contact</a></li>
        </ul>
    </div><!-- close center -->
</div><!-- close-nav -->

You're removing the 'active' class from the closest li's child element, and then you're adding the active class to the current a's parent li. In the spirit of keeping the active class on the anchors and not the list items, this will work for you:

    $('li a').click(function(e) {
        e.preventDefault();
        $('a').removeClass('active');
        $(this).addClass('active');
    });

The active link is the active link. There'd never be more than one link active at any given time, so there's no reason to be all specific about removing the active class. Just remove from all anchors.

Demo: http://jsfiddle.net/rq9UB/