body {
}

.overlay
{
    background-color:grey;
    opacity:0.4;
    filter:alpha(opacity=40); /* For IE8 and earlier */
}

.dialog
{
    visibility: hidden;
    position: absolute;
    left: 0px;
    top: 0px;
    width:100%;
    height:100%;
    text-align:center;
    z-index: 1000;
}

.dialogContent
{
    width:300px;
    margin: 100px auto;
    background-color: #fff;
    border:1px solid #000;
    padding:15px;
    text-align:center;
}