Wordpress: sticky posts arrange first in category archive

gistfile1

<?php } elseif ( is_category('6') ) { // !카테고리 공지사항 ?> 
		
		<?php // get the current category
				$category = get_the_category();
				// get the sticky post in the category
				query_posts(array( 'post__in' => get_option('sticky_posts'), 'cat' => ''.$category[0]->cat_ID.'' ));
				if (have_posts()) : while (have_posts()) : the_post();
					get_template_part('includes/entry', 'index');
				endwhile; endif;
				
				query_posts(array( 'post__not_in' => get_option('sticky_posts'), 'cat' => ''.$category[0]->cat_ID.'' ) );
				if (have_posts()) : while (have_posts()) : the_post();
					get_template_part('includes/entry', 'index');
				endwhile;
					if (function_exists('wp_pagenavi')) { wp_pagenavi(); }
					else { get_template_part('includes/navigation','entry'); }
				else:
					get_template_part('includes/no-results','entry');
				endif; ?>
								
		<?php } else { // !공지사항이 아니면 ?>
		
				<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
					<?php get_template_part('includes/entry', 'index'); ?>
				<?php
				endwhile;
					if (function_exists('wp_pagenavi')) { wp_pagenavi(); }
					else { get_template_part('includes/navigation','entry'); }
				else:
					get_template_part('includes/no-results','entry');
				endif; ?>
		
		<?php } ?>