wordpress调用目录页

调用目录页:

<ul class="mproductpic">
	<?php if ($posts_perpage) { ?>
	<?php $postsperpage = $posts_perpage; ?>
	<?php } else { ?>
    <?php $postsperpage =6; ?>
    <?php } ?>
    <?php
						$categoryID=$cat;
						
						$wp_query = new WP_Query('cat=' . $categoryID. 'orderby=date&order=desc&posts_per_page='.$postsperpage.'&paged='.$paged); ?>
    <?php while (have_posts()) : the_post(); ?>
		
			
			<li>
				<a href=<?php the_permalink() ?> title="<?php the_title(); ?>"><?php if(function_exists('wp_thumbnails_for_homepage')) { wp_thumbnails_for_homepage(); } ?></a>

				<h2 class="mproductpicbt">
					<?php the_title(); ?>
				</h2>
			</li>
	    <?php endwhile; ?>
			<div class="clearfix"></div>
		</ul>