/*上传封面专用*/
.alert_bg {
    background: url(../images/sbg.png) repeat;
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 999999;
    display: none;
}

.alert_box {
    width: 850px;
    height: auto;
    background: #fff;
    box-shadow: 0 5px 15px rgba(0,0,0,.2);
    position: absolute;
    left: 50%;
    top: 50px;
    margin-left: -350px;
}

.alert_box_header {
    width: 100%;
    height: 40px;
    background-color: #EB9C2D;
}

    .alert_box_header h1 {
        font-weight: normal;
        font-size: 16px;
        color: #fff;
        line-height: 40px;
        margin-left: 20px;
        float: left;
    }

    .alert_box_header span {
        font-style: normal;
        color: #fff;
        float: right;
        font-size: 16px;
        line-height: 40px;
        margin-right: 15px;
        cursor: pointer;
    }

.alert_box_content {
    overflow: auto;
}


.upload {
    width: 310px;
    height: 310px;
    position: relative;
}

    .upload img {
        width: 100%;
    }

    .upload .up_btn {
        display: none;
        width: 100px;
        height: 30px;
        position: absolute;
        top: 50%;
        left: 50%;
        margin-top: -15px;
        margin-left: -50px;
    }

        .upload .up_btn a {
            background: url(../images/btn1.png) no-repeat 4px 8px #f7f7f7;
            height: 30px;
            display: block;
            border: #cfd0cf solid 1px;
            -moz-border-radius: 5px;
            -webkit-border-radius: 5px;
            border-radius: 5px;
            font-size: 14px;
            font-family: 微软雅黑;
            text-decoration: none;
            color: #333;
            text-align: center;
            line-height: 30px;
        }

            .upload .up_btn a:hover {
                -webkit-box-shadow: #fff 0px 0px 3px;
                -moz-box-shadow: #fff 0px 0px 3px;
                box-shadow: #fff 0px 0px 3px;
            }

    .upload .up_bg {
        display: none;
        width: 100%;
        height: 100%;
        background: rgba(235, 235, 235, 0.5) !important;
        background: #fff;
        filter: alpha(opacity=50);
        position: absolute;
        left: 0;
        top: 0;
        transition: background 0.5s ease 0s;
    }