Serve splash images for iPhone/iPad models

splash.js

(function () {
	var width = 320; //default to non-retina iPhone
	var height = 460;

	if(navigator.platform === 'iPad') {
		if(window.orientation === 90 || window.orientation === -90) {
			width = 1024; //landscape
			height = 748;
		}
		else {
			width = 768; //portrait
			height = 1004;
		}
	}

	if(window.devicePixelRatio === 2) {
		width *= 2;
		height *= 2;
	}

	document.write('<link rel="apple-touch-startup-image" href="images/splash-'+width+'x'+height+'.png"/>' );
})();