.divConceal
{
	margin:0px; 
	padding:0px;

	width:expression(document.body.offsetWidth);
	height:expression(document.body.offsetHeight); 
	z-index: 1000; 
	position: absolute;
	left: 0px; 
	top: 0px;
	filter:alpha(opacity=50); 
	background-color :White;
}

.divLayer
{
	  margin-top :0px; 
	  padding-top :0px;

      z-index: 1100; 
      position: absolute;
      text-align: center; 
      border-right: black 1px solid;
      border-top: black 1px solid; 
      border-left: black 1px solid; 
      border-bottom: black 1px solid;/* #009900*/
      background-color: orange;/*#99CCFF;*/
      top: expression((this.offsetParent.clientHeight/2)-(this.clientHeight/2)+this.offsetParent.scrollTop);
}


.DivShim
{
	position:absolute; 
	top:expression((this.offsetParent.clientHeight/2)-(this.clientHeight/2)+this.offsetParent.scrollTop); 
	left:0px; 
}