cat list and posts

<?php  $cats = get_categories('orderby=count&order=DESC');
// http://codex.wordpress.org/Function_Reference/get_categories


foreach ($cats as $cat) :

echo $cat->name;

$args = array(
'posts_per_page' => -1, // max number of post per category
'cat' => $cat->term_id
);
query_posts($args);

     if (have_posts()) :

     while (have_posts()) : the_post(); ?>

    <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a>

    <?php endwhile; ?>

     endif;

     wp_reset_query(); ?>

<?php endforeach; ?>