#menu{
	height:650px;
	}
#lower_menu{
	top:635px;
	}
#main{
	top:653px;
	}
#flash{
	top:21px;
	}
#mri{
	position:absolute;
	left: 239px;
	top: 272px;
	width: 477px;
	background-color:black;
	border:4px outset white;
	height: 342px;
	}