#container { 
	max-height: 560px;
	height: 90%;
	top: 5%;
	bottom: 5%;
	margin-top: auto;
	margin-bottom: auto;
}

* html #container { 
	max-height: none;
	height: 560px;
	top: 50%;
	margin-top: -280px;
	bottom: auto;
}

*+html #container { 
	max-height: none;
	height: 560px;
	top: 50%;
	margin-top: -280px;
	bottom: auto;
}