Is it possible with Jquery to add another class to the .body element when the third li element has an .active class? It cant just add an class based on the .active class, it has to be the .active on the third li element specifically.
<div id="extendedinfobox">
<ul class="prodtabmenu">
<li></li>
<li></li>
<li class="active"></li>
<li></li>
<li></li>
</ul>
</div>
<div class="body">