.buystrip-product {
	background-repeat: no-repeat;
	background-size: 260px 90px;
	height: 90px;
	width: 260px;
	background-image: url("http://images.apple.com/macbook-air/images/buystrip_product.png");
}

@media only screen and (-webkit-min-device-pixel-ratio: 1.5), only screen and (min-resolution: 1.5dppx), (-webkit-min-device-pixel-ratio: 1.5), (min-resolution: 144dpi) {
	.buystrip-product {
		background-image: url("http://images.apple.com/macbook-air/images/buystrip_product_2x.png");
	}
}