imulus/retinajs — pull request #13 by nonimage (2012-04-18 16:18:26+00:00)
Title: Support or non-webkit browsers with hi-res screens in retina.less

Changed the output to

@media
all and (-webkit-min-device-pixel-ratio : 1.5),
all and (-o-min-device-pixel-ratio: 3/2),
all and (min--moz-device-pixel-ratio: 1.5),
all and (min-device-pixel-ratio: 1.5) {
background-image: url(@at2x_path);
background-size: @w @h;
}
}

to support non-webkit browsers like Opera Mini/Mobile and Firefox for Android.