“Next & previous” doesn’t work!

Hi everyone
I am using a Mimbo Theme. On the homepage i have that:

<?php if (have_posts()) { ?>

<div id="content">

 <?php
	$postCount = 0;
	$page = (get_query_var('paged')) ? get_query_var('paged') : 0;
	query_posts( 'paged=$page&amp;post_per_page=-1&amp;cat=' . get_query_var('cat') );
	while (have_posts()) { the_post();
		if( $postcount == 0 ) {
		//GETS LATEST OR STICKY POST
	?>

<div id="box" style="width:182px; background: #D8D8D8; float: right; margin-top:22px; height:258px;"></div>

    <div id="lead" class="clearfloat">

	<div id="lead-text">
    <h2><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title(); ?>">
    <?php the_title(); ?></a> <span class="commentcount"> (<?php comments_popup_link('0', '1', '%'); ?>)</span></h2>

    <p class="date"><?php the_time('n/d/y'); ?> &bull; </p>
	<?php the_excerpt(); ?>
	</div>
			</div><!--END LEAD/STICKY POST-->

		<div id="more-posts">
		<h3><?php _e('Recent Posts','Mimbo'); ?></h3>

		<?php
		}
		elseif($post) {
		//GETS NEXT FOUR EXCERPTS
		?>

		<div class="clearfloat recent-excerpts">

<h4><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a> <span class="commentcount">(<?php comments_popup_link('0', '1', '%'); ?>)</span></h4>

<p class="date"><?php the_time('n/d/y'); ?> &bull; </p>

    <?php the_content(); ?>

        </div>

<?php //GETS NEXT HEADLINES
		}
		else {
			ob_start();
			echo '<li><a href="';
			the_permalink();
			echo '">';
			the_title();
			echo '</a></li>';
			$links[] = ob_get_contents();
			ob_end_clean();
		}
		$postcount ++;
		}
	}
	else {
?>

<?php } ?>
	 <div id="nav-links">
<div id="next">
    <?php next_posts_link('Next &raquo;') ?>
</div>
<div id="prev">
    <?php previous_posts_link('&laquo; Previous') ?>
</div>
</div>

<?php
	if(count($links)): ?>

	<?php endif; ?>
	</div>

And links for previuos and next posts doesn’t work. Any idea?
Thanks!