.a_box {
        height: 30px;
        width: 100%;
        margin: 0;
        outline: none;
        padding: 0 8px;
        border: #e2e2e2 1px solid;
        box-shadow: inset 1px 1px 4px #f0f0f0;
        -webkit-box-shadow: inset 1px 1px 4px #f0f0f0;
        -moz-box-shadow: inset 1px 1px 4px #f0f0f0;
        font-family: '宋体';
    }

    .btn {
        min-width: 40px;
        display: inline-block;
        *display: inline;
        margin-bottom: 0;
        *margin-left: .3em;
        font-size: 12px;
        height: 29px;
        line-height: 26px;
        margin: 3px 0 6px 6px;
        padding: 0 10px;
        color: #333333;
        text-align: center;
        text-shadow: 0 1px 1px rgba(255, 255, 255, 0.75);
        vertical-align: middle;
        cursor: pointer;
        background-color: #f5f5f5;
        *background-color: #e6e6e6;
        background-image: -moz-linear-gradient(top, #ffffff, #e6e6e6);
        background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#ffffff), to(#e6e6e6));
        background-image: -webkit-linear-gradient(top, #ffffff, #e6e6e6);
        background-image: -o-linear-gradient(top, #ffffff, #e6e6e6);
        background-image: linear-gradient(to bottom, #ffffff, #e6e6e6);
        background-repeat: repeat-x;
        border: 1px solid #cccccc;
        *border: 0;
        border-color: #e6e6e6 #e6e6e6 #bfbfbf;
        border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
        border-bottom-color: #b3b3b3;
        -webkit-border-radius: 4px;
        -moz-border-radius: 4px;
        border-radius: 4px;
        filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff', endColorstr='#ffe6e6e6', GradientType=0);
        filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
        *zoom: 1;
        -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        -moz-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        font-family: '宋体';
    }

    .lbtn {
        position: absolute;
        left: 380px;
        top: 1px;
        z-index: 1;
    }