.HideControls
{
    position: fixed;
    top: 0px;
    left: 0px;
    background-color: #CCCCCC;
    width: 100%;
    visibility: visible;
    display: block;
    filter: alpha(opacity=80);
    -ms-filter: alpha(opacity=80);
    -moz-opacity: 0.8;
    -khtml-opacity: 0.8;
    opacity: 0.8;
    z-index: 900;
    font-family: tahoma;
    font-size: 16px;
    font-weight: bold;
    color: #0457FC;
    text-align: center;
    vertical-align: middle;
    z-index: 2500;
}
.ShowControls
{
    position: fixed;
    visibility: hidden;
    display: none;
    font-family: tahoma;
    font-size: 16px;
    font-weight: bold;
    color: #0457FC;
    text-align: center;
    vertical-align: middle;
    z-index: 0;
}