easynav breaks my page

I am using the easynav class. I include it like this <?php include('../classes/easynav.php');?> without it in my page validates 0 errors 0 warnings and dispalys fine, however when I stick it in I get a few missing div errors and the page breaks. It would be a shame not to use it as it is a great script. Does the script add any div tags or anything? Here is my navigation that is inserted. <div class="middle"> <div class="top"> <div class="bottom"> <ul id="contact_side"> <li><a href="one.php">one</a></li> <li><a href="two.php">two</a></li> <li><a href="three.php">three</a></li> </ul> </div> </div> </div> thanks, Ross