Ad escapes a location within a other div of an other plugin

Hi, first of all – this is great plugin.

I want to put an add within an other plugin that displays featured posts and so I put the do_action(‘after_first_row’) in the div of that other plugin and the ad just hops out of that div. Why is that so and how can I fix that?

It should be like this:

<div class="fpg-wrapper">
<div class="fpg-page">
<ul class="fpg-row fpg-first-row">[...]</ul>
<div id="ad_after_first_post">
<strong><a class="ad ad-xxx" title="xxx" href="/?adtrack=5" target="_blank"></strong>
</div>
<ul class="fpg-row">[...]</ul>
</div>

But instead it results like this:

<a class="ad ad-xxx" title="xxx" href="/?adtrack=5" target="_blank">
<div class="fpg-wrapper">
[...]
</div>

http://wordpress.org/plugins/ad-manager-for-wp/