.slider {
    width: 100%;
    height:450px;
    margin:0 auto;
    position: relative;
}
.slider_main{
    width: 100%;
    height:100%;
    /*position: absolute;
    left:0;
    top:0;*/
}
.slider_ul{
    width: 100%;
    height:100%;
    /*position: absolute;
    left:0;
    top:0;*/
    overflow: hidden;
}
.slider_ul li{
    height: 100%;
}
.slider_main li a img {
    display:block;
    position: absolute;
    left:0;
    top:0;
}
.slider_span {
    width:100%;
    height:30px;
    line-height: 30px;
    position: absolute;
    left:0;
    bottom:0;
    zoom:1;
}
.slider_span p {
    width:120px;
    height:30px;
    line-height: 30px;
    margin: auto;
}
.slider_span span {
    width:18px;
    height:18px;
    display:block;
    float:left;
    margin:auto 10px;
    background: url(../header-slider/slider/no.png) no-repeat;
    cursor: pointer;
}
.slider_span .slider_span_one{
    background: url(../header-slider/slider/yes.png) no-repeat;
}
.slider_left {
    width:60px;
    height:90px;
    cursor: pointer;
    background:#000 url(../header-slider/slider/ad_ctr.png) no-repeat 5px -180px;
    filter:alpha(opacity:50);opacity:0.5;
    position: absolute;
    left:0;
    top:155px;
    display:none;
}
.slider_left1 {
    background:#000 url(../header-slider/slider/ad_ctr.png) no-repeat 3px top;
}
.slider_right {
    width:60px;
    height:90px;
    cursor: pointer;
    background:#000 url(../header-slider/slider/ad_ctr.png) no-repeat -5px bottom;
    filter:alpha(opacity:50);opacity:0.5;
    position: absolute;
    right:0;
    top:155px;
    display:none;
}
.slider_right1 {
    background:#000 url(../header-slider/slider/ad_ctr.png) no-repeat -3px -90px;
}