footer.php

<?php
/**-------------------------------------------
* @package Code Snippets
* @link http://rhythmshahriar.com/code/
* @author Rhythm <[email protected]>
* @copyright Copyright (c) 2013, Rhythm Shahriar
-------------------------------------------------*/

add_filter('genesis_footer_output','rs_footer_output',10,3);

function rs_footer_output($output,$backtotop_text, $creds_text) {

return 'Your Custom footer Style goes here';

}