query_posts( $query_args );
if (have_posts()) : 
echo '<div class="six columns">';
while (have_posts()) : the_post();
$postcount++;
if( ($postcount % 2) == 2 ) : // skip 'even' posts
	$wp_query->next_post();
	else : the_post();
				
		include('post-loop.php');
				
	endif;
endwhile;
	
echo '</div> <!-- end first column -->';
$postcount = 0;
rewind_posts();
echo '<div class="six columns"> <!-- start second column -->';
while(have_posts()) :
$postcount++;
if( ($postcount % 2) != 1 ) : // skip 'odd' posts
	$wp_query->next_post();
	else : the_post();
				
		include('post-loop.php');
				
	endif;
endwhile;