.navigation li {
     float: left;
     list-style: none;
 }
.navigation li.back {
	background: url("./graphics/lava.gif") no-repeat right -30px;
	width: 9px; height: 30px;
	z-index: 8;
	position: absolute;
}
.navigation li.back .left {
	 background: url("./graphics/lava.gif") no-repeat top left;
	 height: 30px;
	 margin-right: 9px; /* 7px is the width of the rounded shape */
}
.navigation li a {
	font: bold 14px arial;
	text-decoration: none;
	color: black;
	outline: none;
	text-align: center;
	top: 7px;
	text-transform: uppercase;
	letter-spacing: 0;
	z-index: 10;
	display: block;
	float: left;
	height: 30px;
	position: relative;
	overflow: hidden;
	margin: auto 10px;    
  }
.navigation li a:hover, .navigation li a:active, .navigation li a:visited {
	 border: none;
}