.nav_main ul {
            height: 29px;
        }
                    .nav_main ul li.back {
                        background: url("../../images/bg_menu.gif") no-repeat right top;
                        height: 30px;
                        z-index: 8;
                        position: absolute;
                    }
                        .nav_main ul li.back .left {
                            background: url("../../images/bg_menu_right.gif") no-repeat top left;
                            height: 30px;
                            margin-right: 9px; /* 7px is the width of the rounded shape */
                        }
                        .nav_main ul li a:hover, .nav_main ul li a:active, .nav_main ul li a:visited {
                            border: none;
                        }