.table_off
{
//	outline:1px solid red;

	display:none;
  	position:fixed;
	top:0;
	left:0;

	z-index:1;
	width:100%;
	height:100%;
    margin-left: auto;
    margin-right: auto;

    color:white;
    background:rgba(0,0,0,0.8);
}
.table_overlay
{
//	outline:1px solid red;

	display:table;
  	position:fixed;
	top:0;
	left:0;

	z-index:1;
	width:100%;
	height:100%;
    margin-left: auto;
    margin-right: auto;

    color:white;
    background:rgba(0,0,0,0.8);
}
td.td_overlay
{
//	outline:2px solid yellow;

	text-align:center;
//	padding:10px;
//	margin:20px;
}