@media only screen and (-Webkit-min-device-pixel-ratio:1.5),
only screen and (-moz-min-device-pixel-ratio:1.5),
only screen and (-o-min-device-pixel-ratio:3/2),
only screen and (min-device-pixel-ratio:1.5){.footer_inner .logo > img,
.header_mid_inner .logo img{display:none;}
.footer_inner .logo > .footer_logo_retina,
.header_mid_inner .logo .logo_retina{display:inline-block;}
}