#nav {
    float: left;
    height: 50px;
    margin: 0 auto;
}

#nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    color: #3E74B0
}

#nav ul li {
    float: left;
    width: 100px;
    margin-left: 2px;
    text-align: center;
}

#nav ul li a {
    display: block;
    background: url(images/bg_nav_0.jpg) no-repeat left;
    line-height: 50px;
    font-weight: bold;
    color: #3E74B0;
    font-size: 13px;
    text-decoration: none;
}

#nav ul li a span {
    display: block;
    background: url(images/bg_nav_0.jpg) no-repeat right;
    line-height: 50px;
}

#nav ul li a:hover {
    background: url(images/bg_nav_1.jpg) right 0;
    font-size: 13px;
    font-weight: bold;
    text-decoration: none;
}

#nav ul li a:hover span {
    background: url(images/bg_nav_1.jpg) no-repeat right;
}

#nav ul li a#nav_current {
    background: url(images/bg_nav_1.jpg) 0 0 no-repeat;
    color: #000;
}

#nav ul li a#nav_current span {
    background: url(images/bg_nav_1.jpg) right 0;
}