img {
	max-width: 100%;
}

.google_map {
	display: block;
	background-image: url("http://maps.google.com/maps/api/staticmap?size=640x640&zoom=14&maptype=roadmap&markers=color:green|2+Elizabeth+St,+Melbourne+Victoria+3000+Australia&sensor=false");
	background-repeat: no-repeat;
	background-position: 50% 50%;
	
	line-height: 0;
}

.google_map img {
	opacity: 0;
}

@media only screen and (min--moz-device-pixel-ratio: 2), 
only screen and (-o-min-device-pixel-ratio: 2/1), 
only screen and (-webkit-min-device-pixel-ratio: 2), 
only screen and (min-device-pixel-ratio: 2) {

	.google_map {
		background-image: url("http://maps.google.com/maps/api/staticmap?size=640x640&zoom=14&maptype=roadmap&markers=color:green|2+Elizabeth+St,+Melbourne+Victoria+3000+Australia&sensor=false&scale=2");	
	
		background-size: 640px 640px
	
	}
	
}