A small plugin to add an loading indicator to your page via javascript. You can choose to use an animated GIF or some CSS3 magic. The loader can be added to any block element. It is very easy to customize via css or less.
Here's a small demo and the documentation.
Check this page for some awesome CSS3 loaders.
<script src="/path/to/jquery.min.js"></script>
<script src="/path/to/jquery.loading-indicator.js"></script>
<link type="text/css" rel="stylesheet" href="/path/to/jquery.loading-indicator.css" />
$('body').loadingIndicator();