#nav-menu {padding:0; margin:0; list-style:none; height:100px; position:relative; z-index:200; font-family:arial, verdana, sans-serif; width:608px;}
#nav-menu li.top {display:block; float:left;}
#nav-menu li a {display:block; float:left; height:100px; width:99px; border:0px; text-decoration:none; padding:0; cursor:pointer;}
#nav-menu li a b {margin-left:-999px;}

#nav-menu li a.books {background:url('images/navigation/menu_books.jpg');}
#nav-menu li a.services {background:url('images/navigation/menu_services.jpg');}
#nav-menu li a.forwriters {background:url('images/navigation/menu_forwriters.jpg');}
#nav-menu li a.forthcoming {background:url('images/navigation/menu_forthcoming.jpg');}

#nav-menu li:hover a,
#nav-menu a:hover
{background-position: 0 100px;}


#nav-menu table {position:absolute; top:0; left:0; border-collapse:collapse; padding:0; width:0; height:0; margin:-1px;}

#nav-menu .sub {position:absolute; left:-9999px; top:-9999px; width:0; height:0; margin:0; padding:0; list-style:none;}

#nav-menu li:hover {position:relative; z-index:200;}
#nav-menu a:hover {position:relative; white-space:normal; z-index:200;}

#nav-menu :hover ul.sub
{left:0; top:100px; background: #edb; width:99px; height:auto; z-index:300;}
#nav-menu :hover ul.sub li
{display:block; height:18px; position:relative; float:left; width:99px; font-weight:normal;}
#nav-menu :hover ul.sub li a
{display:block; height:18px; width:99px; border:1px solid #D1B496; border-color:#666666 #D1B496 #666666 #D1B496; text-decoration:none; padding:0; cursor:pointer;}
#nav-menu :hover ul.sub li a b {position:absolute; left:-9999px; margin:0;}

#nav-menu :hover ul li a.fic {background:url('images/navigation/submenu_fiction.jpg');}
#nav-menu :hover ul li a.nonfic {background:url('images/navigation/submenu_nonfiction.jpg');}
#nav-menu :hover ul li a.sch {background:url('images/navigation/submenu_school.jpg');}
#nav-menu :hover ul li a.actv {background:url('images/navigation/submenu_activity.jpg');}

#nav-menu :hover ul li a.edt {background:url('images/navigation/submenu_editorial.jpg');}
#nav-menu :hover ul li a.resrch {background:url('images/navigation/submenu_research.jpg');}
#nav-menu :hover ul li a.clnt {background:url('images/navigation/submenu_clients.jpg');}

#nav-menu :hover ul.sub li a:hover 
{background-position: 0 18px; position:relative;}