Italicize "of" in Genesis Site Title

gistfile1.aw

<?php
/**
 * Italicize "of" in Site Title
 * @author Bill Erickson
 * @link http://www.billerickson.net/code/genesis-customize-site-title
 *
 * @param string $title full title
 * @param string $inside text
 * @param string $wrap html wrapper
 * @return string full title
 */
function be_customize_site_title($title, $inside, $wrap) {
	$custom = str_replace("of", "<em>of</em>", $title);
	return $custom;
}
add_filter('genesis_seo_title','be_customize_site_title', 10, 3);