#mainControl{
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        margin: auto;
        background-color: #3399cc;
        border:1px solid #003366;
        color: white;
        width:450px;
        height:300px;
        z-index:10000;
        overflow: auto;
        display: none;
}