@media (orientation: landscape) {
	.portrait-only {
		position:fixed;
		left:0px;
		top:0px;
		z-index: 100000000;
		display: block;
		width: 100%;
		height: 100%;
		background: white url(../rotate-landscape.png) center center no-repeat;
		background-size: 342px 200px;
	}
}

@media (orientation: portrait) {
	.landscape-only {
		position:fixed;
		left:0px;
		top:0px;
		z-index: 100000000;
		display: block;
		width: 100%;
		height: 100%;
		background: white url(../rotate-portrait.png) center center no-repeat;
		background-size: 342px 200px;
	}
}