Added code for newsletter signup

<div id="signup"><!-- Begin MailChimp Signup Form -->
<div id="mc_embed_signup"><form action="http://restorethefourth.us7.list-manage1.com/subscribe/post?u=78ef7834b585d79e03ecda09a&amp;id=4ecea1236d" class="validate" id="mc-embedded-subscribe-form" method="post" name="mc-embedded-subscribe-form" target="_blank"><label for="email">E-Mail Address: </label><input class="email" id="mce-EMAIL" name="EMAIL" type="email" value="" /><div class="clear"><input class="button" id="mc-embedded-subscribe" name="subscribe" type="submit" value="Subscribe" /></div>
</form></div><!--End mc_embed_signup--></div>


...and the link should have the overlay class...

<a class="overlay">Signup</a>