<?php if (have_posts()); ?>
aaaaaa
<?php endif; ?>
<?php if ( is_home() || is_page() ) { ?>
<?php } ?>
<?php if (in_category(‘1’)): ?>
A
<?php elseif (in_category(‘2’)): ?>
B
<?php endif; ?>
<?php if (next_posts_link(‘« Previous Entries’) || previous_posts_link(‘Next Entries »’)) { ?>
<div class=”navigation”>
<div class=”alignleft”><?php next_posts_link(‘« Previous Entries’) ?></div>
<div class=”alignright”><?php previous_posts_link(‘Next Entries »’) ?></div>
</div>
<?php endif; ?>