de hecho esta hecha con ul y li deberias de checar el codigo fuente jejeje
Código HTML:
<div id="nav_main-navigation">
<ul>
<li class="nav_first"><a title="" href="/English/GT_Sport Cars">GT & Sport Cars</a><div class="nav_flyout">
<ul>
<li class="nav_first"><a title="" href="/English/GT_Sport Cars/CurrentRange">Current Range</a><img onclick="javascript:document.location.href='/English/GT_Sport Cars';" style="CURSOR:hand;" src="http://cdn.ferrari.com/Site_Collection_Image_334x140/100210_menu-gamma.jpg" alt="" style="display:block;border-width:0px;" /></a></li>
<li class=""><a title="" href="/English/GT_Sport Cars/Sport-Prototypes">Sport Prototypes</a></li><li class=""><a title="" href="/English/GT_Sport Cars/GT">News & Events</a></li><li class=""><a title="" href="/English/GT_Sport Cars/Classiche">Past models</a></li><li class=""><a title="" href="/English/GT_Sport Cars/599-HY-KERS">599 HY-KERS</a></li><li class=""><a title="" href="/English/GT_Sport Cars/RacingInnovation">F1 to GT</a></li></ul>
</div>
</li>
<li class=""><a title="" href="/English/Ferrari_Approved">Pre-Owned</a><div class="nav_flyout">
<ul>
<li class="nav_first"><a title="" href="/English/Ferrari_Approved/Programme">Approved Programme</a><img onclick="javascript:document.location.href='/English/Ferrari_Approved';" style="CURSOR:hand;" src="http://cdn.ferrari.com/_layouts/Ferrari/Ferrari_AssetResizeImage.aspx?ImageUrl=/Site_Collection_Image_334x140/090715Genuine360_AntistoneChipping_B_334x140.jpg&Width=323&Height=114" alt="" style="display:block;border-width:0px;" /></a></li>
<li class=""><a title="" href="/English/Ferrari_Approved/Ferrari-Approved">Used car search</a></li></ul>
</div>
</li>
<li class=""><a title="" href="/English/Services">Services</a><div class="nav_flyout">
<ul>
<li class="nav_first"><a title="" href="/English/Services/Aftersales">Aftersales</a><img onclick="javascript:document.location.href='/English/Services';" style="CURSOR:hand;" src="http://cdn.ferrari.com/SiteCollectionImages/100621_Montaggio_Vetture_04_engine_area_323x114.jpg" alt="" style="display:block;border-width:0px;" /></a></li>
<li class=""><a title="" href="/English/Services/Ferrari_Classiche_dept">Classic cars</a></li><li class=""><a title="" href="/English/Services/Financial-Services">Financial Services</a></li><li class=""><a title="" href="/English/Services/Dealers-stores">Dealers & Stores</a></li><li class=""><a title="" href="/English/Services/Entertainment">Entertainment</a></li></ul>
</div>
</li>
<li class=""><a title="" href="/English/Scuderia">Scuderia</a><div class="nav_flyout">
<ul>
<li class="nav_first"><a title="" href="/English/Scuderia/Corse_Clienti">Corse Clienti</a><img onclick="javascript:document.location.href='/English/Scuderia';" style="CURSOR:hand;" src="http://cdn.ferrari.com/_layouts/Ferrari/Ferrari_AssetResizeImage.aspx?ImageUrl=/Site_Collection_Image_334x140/100204_menu-scuderia.jpg&Width=0&Height=0" alt="" style="display:block;border-width:0px;" /></a></li>
<li class=""><a title="" href="/English/Scuderia/Corse-Clienti">News & Events</a></li><li class=""><a title="" href="/English/Scuderia/RacingHistory">Racing History</a></li><li class=""><a title="" href="/English/Formula1">Formula1</a></li></ul>
</div>