.navigation_menu {
	background: #333333;
	float: left;
	list-style: none;
	margin: 0;
	padding: 0;
	/*width: 12em;*/
  width: 100%;
}

.navigation_menu li {
	font: 67.5% "Lucida Sans Unicode", "Bitstream Vera Sans", "Trebuchet Unicode MS", "Lucida Grande", Verdana, Helvetica, sans-serif;
  font-size: 16px;
	margin: 0;
	padding: 0;
}

.navigation_menu a {
	background: #333;
	border-bottom: 1px solid #393939;
	color: #ccc;
	display: block;
	margin: 0;
	padding: 8px 12px;
	text-decoration: none;
  height: 50px;
  line-height: 50px;
}

.navigation_menu a:hover,
.navigation_menu li a.current {
	background: #2580a2 url("http://www.math-jobs.com/images/menu/navigation_hover.gif") left center no-repeat;
	color: #fff;
	padding-bottom: 8px;
}

.navigation_menu li ul {
	background: #E5E5EF;
}

.navigation_menu li ul li {
	font: 67.5% "Lucida Sans Unicode", "Bitstream Vera Sans", "Trebuchet Unicode MS", "Lucida Grande", Verdana, Helvetica, sans-serif;
  font-size: 12px;
	margin: 0;
	padding: 0;
  list-style: none;
  width: 100%;
}

.navigation_menu li ul li a {
	background: #5A5A5A;
	border-bottom: 1px solid #393939;
	color: #ccc;
	display: block;
	margin: 0;
	padding: 8px 12px;
	text-decoration: none;
  height: 25px;
  line-height: 25px;
}

.navigation_menu li ul li a:hover,
.navigation_menu li ul li a.current {
	background: #2580a2 url("http://www.math-jobs.com/images/menu/navigation_hover.gif") left center no-repeat;
	color: #fff;
	padding-bottom: 8px;
}