.dh li {
    float: left;
    list-style: none;
    text-align: center;
    LINE-HEIGHT: 200%;
width: 137px;
}
.dh li:hover{
    TEXT-DECORATION: none;
    FONT-FAMILY: 微软雅黑;
    BACKGROUND-IMAGE: url(../images/daohanghong.png);
    COLOR: #464545;
    LINE-HEIGHT: 200%;
TEXT-DECORATION: none;
}
.dh li .a1 {
    TEXT-DECORATION: none;
    FONT-FAMILY: 微软雅黑;
    LINE-HEIGHT: 200%;
    COLOR: #464545;
TEXT-DECORATION: none;
}
.dh li:hover .a1{
    COLOR: #ffffff;
TEXT-DECORATION: none;
}
.dh li ul {
    display: none;
    position: absolute;
    padding: 0;

}
.dh li:hover ul {
    display: block;
}
.dh li ul li {
    float:none;
    width: 137px;
    font-size:12px;
    LINE-HEIGHT: 200%;
    background-image: url(../images/daohanghui.png);
    padding: 8px 0;
}
.dh li ul li .a2{
    color: #464545;
    TEXT-DECORATION: none;
}

.dh li ul li:hover .a2{
    COLOR: #ffffff;
}