Javascript: iPad/iPhone Startup Screen
<script>(function(){var p,l,r=window.devicePixelRatio;if(navigator.platform==="iPad"){p=r===2?"img/startup/startup-tablet-portrait-retina.png":"img/startup/startup-tablet-portrait.png";l=r===2?"img/startup/startup-tablet-landscape-retina.png":"img/startup/startup-tablet-landscape.png";document.write('<link rel="apple-touch-startup-image" href="'+l+'" media="screen and (orientation: landscape)"/><link rel="apple-touch-startup-image" href="'+p+'" media="screen and (orientation: portrait)"/>');}else{p=r===2?"img/startup/startup-retina.png":"img/startup/startup.png";document.write('<link rel="apple-touch-startup-image" href="'+p+'"/>');}})()</script>