Posts einer Kategorie auslesen und anzeigen lassen (PHP)

<?php
// Template Name: Testtemplate
get_header(); ?>


            <!-- BEGIN MAIN -->
            <div id="main">
            
                    <div class="block archive">
                    
                        <h3>
                            <?php _e('Recent Posts', 'Avenue'); ?>
                            <span class="arrows">&raquo;</span>
                        </h3>
                        
                        <?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; ?>
                        <?php $blog = new WP_Query('showposts=5'.'&paged='.$paged); ?>
                        <?php if ($blog->have_posts()) : while ($blog->have_posts()) : $blog->the_post(); ?>
                        <div id="post-<?php the_ID(); ?>" <?php post_class('block-item-big'); ?>>
                            <?php
                            if(has_post_format('video') || has_post_format('audio') || has_post_format('gallery')) {
                                $icon = '<span class="' . get_post_format($post->ID) . '-icon"></span>';
                            } else {
                                $icon = '';
                            }
                            ?>
                            <?php if(has_post_thumbnail()): ?>
                            <?php $image = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'widget-image'); ?>
                            <div class="block-image"><a href='<?php the_permalink(); ?>' title='<?php the_title(); ?>'><img src="<?php echo $image[0]; ?>" alt="<?php the_title(); ?>" width='150' height='100' /></a><?php echo $icon; ?></div>
                            <?php else: ?>
                            <div class="block-image"><a href='<?php the_permalink(); ?>' title='<?php the_title(); ?>'><img src="<?php bloginfo('template_directory'); ?>/timthumb.php?src=<?php bloginfo('template_directory'); ?>/images/thumbnail.png&w=150&h=100" alt="<?php the_title(); ?>" width='150' height='100' /></a><?php echo $icon; ?></div>
                            <?php endif; ?>
                            <h2><a href='<?php the_permalink(); ?>' title='<?php the_title(); ?>'><?php the_title(); ?></a></h2>
                            <span class="block-meta">
                                <span class="heading-author"><?php the_author(); ?></span> 
                                <span class="heading-date"><?php the_time('F j, Y'); ?></span>
                                <span class="heading-comments"><?php comments_popup_link('0','1','%'); ?></span>
                            </span>
                            <p><?php echo string_limit_words(get_the_excerpt(), 34); ?></p><a href='<?php the_permalink(); ?>' title='<?php the_title(); ?>' class="readmore"><?php _e('Read More', 'Avenue'); ?> <span class="block-arrows">&raquo;</span></a>
                        </div>
                        <?php endwhile; endif; ?>
                        
                        <?php kriesi_pagination($blog->max_num_pages, $range = 2); ?>
                    </div>
            
            </div>
            <!-- END MAIN -->
            
<?php get_sidebar(); ?>
            
<?php get_footer(); ?>