.lavaLampWithImage li.back{
    background:url(../images/lava.png) no-repeat right -52px;
    width:17px;
    height:52px;
    padding:0;
    z-index:8;
    position:absolute;
    }
.lavaLampWithImage li.back .left{
    background:url(../images/lava.png) no-repeat top left;
    height:52px;
    margin-right:17px; /* 7px is the width of the rounded shape */
    }
.lavaLampWithImage li a {
    z-index:10;
    display:block;
    float:left;
    height:52px;
    position:relative;
    overflow:hidden;
    margin:auto;  
    }
.lavaLampWithImage li a:hover,
.lavaLampWithImage li a:active,
.lavaLampWithImage li a:visited{
    border:none;
    }