Functions

<?php
    class dropdown extends Walker_CategoryDropdown {
        function start_el(&$output, $category, $depth, $args) {
            $pad = str_repeat('&nbsp;', $depth * 3);
            $cat_name = apply_filters( 'list_cats', $category->name, $category );
            $output .= "\t<option class=\"level-$depth\" value=\"".$category->slug."\"";
            $output .= '>';
            $output .= $pad.$cat_name;
            if ( $args['show_count'] )
                $output .= '&nbsp;&nbsp;('. $category->count .')';
            if ( $args['show_last_update'] ) {
                $format = 'Y-m-d';
            $output .= '&nbsp;&nbsp;' . gmdate($format, $category->last_update_timestamp);
            }
            $output .= "</option>\n";
        }
    }
?>