#video_list{
    width:132px;
    float:left;
    height:316px;
    padding:22px 0;
    position:relative;
    margin-left:10px;
}
    #video_list .up, #video_list .down{
        width:132px;
        height:22px;
        background-repeat:none;
        background-position:top left;
        display:block;
        position:absolute;
        left:0;
    }
    #video_list .up:hover, #video_list .down:hover{
        background-position:bottom left;
    }
    #video_list .up{
        top:0;
        background-image:url('../images/buttons/up.png');
    }
    #video_list .down{
        bottom:0;
        background-image:url('../images/buttons/down.png');
    }
    .mask{
        overflow:hidden;
        position:relative;
        height:100%;
    }
    #video_list ul{position:relative;}
    #video_list ul li{
        float:left;
        clear:both;
        margin:2px 0;
        width:132px;
        height:75px;
        position:relative;
        background:url('../images/sample_video_list.jpg');
    }
        #video_list ul li .overlay{
            position:absolute;
            top:0;
            left:0;
            width:100%;
            height:100%;
            background:url('../images/buttons/video_list_overlay.png') top left no-repeat;
        }
        #video_list ul li:hover .overlay{
            background-position:bottom left;
        }
        #video_list .tooltip{
            display:none;
        }
        .tooltip{
            position:absolute;
            display:none;
            width:300px;
            padding:10px;
            text-align:center;
            background:url('../images/buttons/video_list_tooltip.png') repeat top left;
        }
        .tooltip p{
            color:#000;
        }
        .tooltip strong{
            color:#000;
        }
        .tip{
            position:absolute;
            right:-20px;
            top:50%;
            margin-top:-11px;
            width:20px;
            height:21px;
            background:url('../images/buttons/video_list_tip.png') no-repeat top left;
            
        }