Elxis Team recommends the usage of the Flat List style for any menu and the usage of css suffixes to distinguish various menus appearance.
<div class="moduletable"><a href="http://www.myserver.com/test/news/" title="News" class="mainlevel" id="active_menu" onclick="setsynitem('89', this.href); return false;">News</a><div style="padding-left: 4px" class="sublevel1"><img src="http://www.myserver.com/test/templates/test/images/indent1.png" alt="indent1" /><a href="http://www.myserver.com/test/news/medias/" title="Medias" class="sublevel" onclick="setsynitem('90', this.href); return false;">Medias</a></div><div style="padding-left: 4px" class="sublevel1"><img src="http://www.myserver.com/test/templates/test/images/indent1.png" alt="indent1" /><a href="http://www.myserver.com/test/news/latest-news/" title="Latest news" class="sublevel" onclick="setsynitem('91', this.href); return false;">Latest News</a></div></div>
<div class="moduletable"><ul id="mainlevel208" class="mainlevel"><li><a href="http://www.myserver.com/test/news/" title="News" class="mainlevel" id="active_menu" onclick="setsynitem('89', this.href); return false;">News</a></li></ul></div>