var container = jQuery('#captchaContainer');
var html = jQuery('#captchaMarkup', container).val();
container.append(html);

function toggleAudio(format) {
    var imgAudio = jQuery('#linkReCaptchaAudio');
    var imgText = jQuery('#linkReCaptchaText');

    if ((imgAudio) && (imgText)) {
        Recaptcha.switch_type(format);
        imgAudio.toggle();
        imgText.toggle();
    }
}