Custom language menu for WPML.php

/* Pierre de la Martinière
 *
 * display all languages avalaible for a Wordpress Theme using WPML
 * directly echo something like "en fr it ru" ...
 *
 * more info at http://wpml.org/documentation/getting-started-guide/language-setup/custom-language-switcher/
 *
 */
 
//[wpml_lang_selector]
function wpml_shortcode_func() {
    if (function_exists('icl_get_languages')) {
    
        $output    = '';
        $languages = icl_get_languages('skip_missing=0&orderby=id&order=asc');

        $output .= '<div class="lang_selector">';

        foreach($languages as $i=>$data):
            if($data['language_code'] == ICL_LANGUAGE_CODE):
                $output .= '<a class="active" href="'.$data['url'].'">'.$i.'</a>';
            else :
                $output .= '<a href="'.$data['url'].'">'.$i.'</a>';
            endif;
        endforeach;

        $output .= '</div>';
        
        return $output;
    }
}
add_shortcode( 'wpml_lang_selector', 'wpml_shortcode_func' );