/* CSS Document */

div.tank{
			width:450px;
			height: 600px;
			position:relative;
			z-index: 5;
			opacity: 1;
		}
	
			div.light{
			width:450px;
			height: 600px;
			position:absolute;
			left:0;
			top: 0;
			z-index: 7;
			opacity: .5;
				visibility: hidden;
		}
		
			div.diver{
			position:absolute;
				top:100px;
				left: 50%;
			z-index: 6;
			opacity: 1;
		}