/*导航默认样式，可根据实际情况修改*/
* {
    margin: 0;
    padding: 0
}

.nav {
    width: 1002px;
    height: 37px;
    left: 50%;
    margin-left: -500px;
    list-style: none;
    position: relative;
    background: url(../kj_img/webnav_bj.jpg) repeat-x;
}

.nav li {
    display: inline-block;
    margin-left: 9px;
    _margin-left: 9px;
    position: relative;
    overflow: hidden;
    height: 37px;
 /*建议此高度大于等于里面的a标签高度*/
    float: left;
    text-align: center;
}

.nav li span {
    display: inline-block;
    overflow: hidden
}

.nav li a {
    text-decoration: none;
    outline: none;
    color: #FFFFFF;
    display: inline-block;
    padding: 0 10px;
    text-align: center;
    background: url(../kj_img/nav_1.jpg) repeat-x;
    font-weight: bold;
    height: 37px;
    width: 81px;
    line-height: 37px;
}
/*鼠标经过时样式*/
.nav li a.over {
    background: url(../kj_img/nav_2.jpg) repeat-x;
    color: #284D77;
}