Next/Previous Link as Image

Hello,

I need to replace my “previous” and “next” navigation buttons to images. I read other posts regarding this issue and it’s not working for some reason.

This is how my navigation php page looks like:

<?php if (is_single()) : ?>

<div class=”navigation”>
<p class=”previous”><?php previous_post_link(‘← %link’) ?></p>
<p><?php next_post_link(‘%link →’) ?></p>
</div>

<?php else : ?>

<div class=”navigation”>
<p><span class=”older”><?php next_posts_link(‘← Previous Entries’) ?></span><?php previous_posts_link(‘Next Entries →’) ?></p>
</div>

<?php endif; ?>