drupal 7 issue

template.php

 function ldc2_menu_link(array $variables){
        $element = $variables['element'];
        $sub_menu = '';

        $element['#attributes']['class'][] = 'level-' . $element['#original_link']['depth'];

        if ($element['#below']) {
            $sub_menu = drupal_render($element['#below']);
        }
        $output = l($element['#title'], $element['#href'], $element['#localized_options']);                                           
        return '<li rel="zzz" ' . drupal_attributes($element['#attributes']) . '>' . $output . $sub_menu . "</li>\n";
    }