#nav_links ul { /* all lists */
	padding: 0;
	margin: 0;
	list-style: none;
	line-height: 1;
}

#nav_links li li {
	clear: both;
	display: block;
	border-bottom: 1px solid #fff;
}

#nav_links ul li a {
	display: block;
	width: 10em;
}


#nav_links li { /* all list items */
	float: left;
}

#nav_links li ul { /* second-level lists */
	position: absolute;
	background: orange;
	z-index: 10;
	left: -999em; /* using left instead of display to hide menus because display: none isn't read by screen readers */
}

#nav_links li ul ul { /*third-and-above-level lists */
	margin: -2.4em 0 2em 10em;
}

#nav_links li:hover ul ul, #nav_links li:hover ul ul ul, #nav_links li.sfhover ul ul, #nav_links li.sfhover ul ul ul {
	left: -999em;
}

#nav_links li:hover ul,  #nav_links li.sfhover ul { /* lists nested under hovered list items */
	left: 164px;
	top: 142px;
}

#nav_links li li:hover ul, #nav_links li li li:hover ul, #nav_links li li.sfhover ul, #nav_links li li li.sfhover ul {
	left: 4.2em;
	top: 2.4em;
}