Custom page template – displaying attached images

Hi,

I haver created a custom template (child to the twenty twelwe template)…

I want to show a two column layout, the left shall be the data used in the page text, amd the right will display all my attached pictures (that I have attached to this page).
How do I style it properly with the <li> and the <div>. In the example bellow I seems to get the layout ok, but I got the dots at the <li>...
//Sam

<?php
/**
 * Template Name: Object Description
 * Description: Object Description Page Template
 * @package WordPress
 * @subpackage Twenty_Twelve
 * @since Twenty Twelve 1.0
 */
get_header(); ?>
	<div id="primary" class="site-content">
		<div id="content" role="main">
			<?php while ( have_posts() ) : the_post();
                                  $args = array(
                                  'post_type' => 'attachment',
                                  'numberposts' => -1,
                                  'order' => 'ASC',
                                  'orderby' => 'title',
                                  'post_status' => null,
                                  'post_parent' => $post->ID
                                 );

                                            $attachments = get_posts( $args );
                                            if ( $attachments ) {
                                                $default_attr = array(
	                                                //'src'	=> $src,
	                                                'class'	=> "attachment-post-thumbnail wp-post-image",
	                                                //'alt'   => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )),
                                                    );
                                                echo '<div class="entry-page-image">';
                                                foreach ( $attachments as $attachment ) {
                                                    echo '</li>
<li>';
                                                    echo wp_get_attachment_image( $attachment->ID, 'medium', false, $default_attr );
                                                    echo '</li>
';
                                                }
                                                echo '</div>';
                                            }
            ?>
            <?php get_template_part( 'content', 'page' ); ?>

			<?php endwhile; // end of the loop. ?>

		</div><!-- #content -->
	</div><!-- #primary -->

<?php get_sidebar( 'front' ); ?>
<?php get_footer(); ?>