// Register Script function microsite_referrer() { wp_register_script( 'microsite_referrer', '//forms.compassion.com/api/micrositeReferers/refererScript-2.0.js', array( 'jquery' ), '201511.0', false ); wp_enqueue_script( 'microsite_referrer' ); } add_action( 'wp_enqueue_scripts', 'microsite_referrer' );