.blende {
	background-color: #FFFFFF;
	display: block;
	position: absolute;
	z-index: 2;
	height: 500px;
	width: 100%;
	left: 0px;
	top: 0px;
	filter:alpha(opacity=90);   
	-moz-opacity: 0.5;   
	opacity: 0.5;
	display: none;
}
html>body .blende {
		position: fixed
	}
.blendeBlack {
	background-color: #000000;	
	color: red;
	position: absolute;
	z-index: 2;
	height: 500px;
	width: 100%;
	left: 0px;
	top: 0px;
	filter:alpha(opacity=90);   
	-moz-opacity: 0.5;   
	opacity: 0.5;
	display: none;
}
html>body .blendeBlack {
		position: fixed
	}