var isiPhone = navigator.userAgent.indexOf("iPhone") != -1
if (isiPhone) {
    document.write("<link rel='stylesheet' type='text/css' HREF='css/ios.css'>")
}

var isiPod = navigator.userAgent.indexOf("iPod") != -1
if (isiPod) {
    document.write("<link rel='stylesheet' type='text/css' HREF='css/ios.css'>")
}