ariele

thanks you MichaelH, it works perfectly.

Another little question:
can I make the same thing with a random post and how?

actually I’m using the following code:

<?php
        query_posts(array('orderby' => 'rand', 'showposts' => 1));
        if (have_posts()) : while (have_posts()) : the_post(); ?>
        <div class="post" id="post-<?php the_ID(); ?>">
            <h2><?php the_title(); ?></h2>
            <?php
                the_content();
            ?>
            <a href="<?php the_permalink() ?>">continua</a>
        </div>
        <?php endwhile; endif;?>

But I have the same problem, this loop show me the whole post instead of the part before <!–more–>.