Wordpress: google map shortcode

gistfile1

/* ********************************************************************************************************
** Google Maps Shortcode ******************************************************************************* */
/* !구글맵 shortcode ************************************************************************************ */
function fn_googleMaps($atts, $content = null) {
   extract(shortcode_atts(array(
      "width" => '598',
      "height" => '420',
      "src" => ''
   ), $atts));
   return '<iframe width="'.$width.'" height="'.$height.'" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="'.$src.'&amp;output=embed"></iframe>';
}
add_shortcode("googlemap", "fn_googleMaps");