This is a jQuery function that generates animated 'light sweep' effect on a selected element.
Add the jquery.lightSweep.js and lightSweep.css to your document along with jQuery library:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<script type="text/javascript" src="_js/jquery.lightSweep.js"></script>
<link href="_css/jquery.lightSweep.css" rel="stylesheet" type="text/css">
lightSweep('#elementID','duration [s]');
example: lightSweep('#banner','3s');