.black_overlay{
display: none;
position: absolute;
top: 0%;
left: 0%;
width:expression(this.offsetParent.clientWidth);
height:expression(this.offsetParent.clientHeight+500);
background-color: black;
z-index:1001;
-moz-opacity: 0.8;
opacity:.80;
filter: alpha(opacity=50);
}
.white_content {
display: none;
position: absolute;
top:expression(this.offsetParent.clientHeight-500);
left: 25%;
width: 440px;
height: 200px;
padding: 16px;
border: 10px solid #B0D8FF;
background-color: white;
z-index:1002;
overflow: auto;
}