Even / odd class

		<?php query_posts('posts_per_page=6'); ?>
		<?php while (have_posts()) : the_post(); ?>
			<div id="blog-entry" <?php
				$postcount++;
				if( ($postcount % 2) == 0 ) :
					echo " class=\"even\"";
				elseif ( ($postcount % 2) != 0 ):
				 	echo " class=\"odd\"";
				?>>
			<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
			~ posts go here ~
			</div>
			</div>
		<?php endif; ?>
		<?php endwhile; ?>