<?php $lastpost = new WP_Query("cat=14&showposts=3" );
while($lastpost->have_posts()) : $lastpost->the_post();?>
<a href="<?php the_permalink(); ?>" class='item_right' style="float: left;">
   <div class="thumbnail">
        <?php the_post_thumbnail('portfolio'); ?>
   </div>
   <h3 class="title"><?php the_title(); ?></h3>
  </a>
<?php endwhile; ?>
<div class='clear'></div>