public static function contact($atts = array())
{
$all_defaults = Footer_Credits_Options::get_defaults();
$defaults = array();
$defaults['show_telephone'] = $all_defaults['show_telephone'];
$defaults['show_email'] = $all_defaults['show_email'];
$defaults['show_address'] = $all_defaults['show_address'];
$defaults['use_microdata'] = $all_defaults['use_microdata'];
$defaults['separator'] = $all_defaults['separator'];
$defaults['item_separator'] = $all_defaults['item_separator'];
$defaults['section_separator'] = $all_defaults['section_separator'];
$defaults['footer_class'] = self::CODE;
$params = shortcode_atts($defaults, $atts);
//apply plugin defaults
return sprintf('<span class="%1$s">%2$s</span>', $params['footer_class'], self::contact_info($params));
}