WordPress Tips: Adding keyboard navigation between posts

I used the tips in this helpful post today to add keyboard navigation between posts on a WordPress website.

The jQuery script is:

(function($){
   $(document).ready(function () {
      $(document).keydown(function(e) {
         var url = false;
         if (e.which == 37) {  // Left arrow key code
            url = $('.prev a').attr('href');    }
         else if (e.which == 39) {  // Right arrow key code
            url = $('.next a').attr('href');    }
         if (url) { window.location = url;   }
     });
   });
})(jQuery);

Then, just make sure your previous and next post links have the appropriate classes:

<div class="prev-next">
<div class="alignleft prev"><?php previous_post('&laquo; %', '', 'yes'); ?></div>
<div class="alignright next"><?php next_post('% &raquo; ', '', 'yes'); ?></div>
</div>