/*css essenziale se javascript è abilitato*/
div.jsenable h4{cursor: pointer; color:#003366; background: url(../images/icon_show.gif) right no-repeat}
div.jsenable ul ul{display:none}
div#nav li.hide ul{display:none}
div#nav li.show ul{display:block}
div#nav li.show h4{color:#003366; background: #ffffff url(../images/icon_hide.gif) right no-repeat}