#back_normal {
		filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50);
		-moz-opacity: 0.3;
		opacity: 0.3;	
		position: 			fixed;
		left: 				20px;
		top:  				20px;	
	}
	#back_highlite {
		filter:progid:DXImageTransform.Microsoft.Alpha(opacity=100);
		-moz-opacity: 1;
		opacity: 1;	
		position: 			fixed;
		left: 				20px;
		top:  				20px;		
	}