.modal_overlay {
	min-height: 100%;
	display: block;
	position: absolute;
	top: 0;
	left: 0;
	width: 110%;
	height: 100%;
	background-color: black;
	z-index:1001;
	-moz-opacity: 0.7;
	opacity:.70;
	filter: alpha(opacity=70);
}

.modal_window {
	display:block;
	position:absolute;
	/*background-color:white;*/
	z-index:1002;
	overflow:hidden;
	width:501px;
	height:268px;
	left: 25%;
	top:25%; 
}

* html .modal_overlay { /* ie6 hack */
 position: absolute;
 height: expression(document.body.scrollHeight > document.body.offsetHeight ? document.body.scrollHeight : document.body.offsetHeight + 'px');
 width: expression(document.body.scrollWidth > document.body.offsetWidth ? document.body.scrollWidth : document.body.offsetWidth + 'px');
}

/*HTML, BODY { height: 100%; overflow: hidden; }*/