// Apple detection object  
var Apple = {};  
Apple.UA = navigator.userAgent;  
Apple.Device = false;  
Apple.Types = ["iPhone", "iPod", "iPad"];  
for (var d = 0; d < Apple.Types.length; d++) {  
    var t = Apple.Types[d];  
    Apple[t] = !!Apple.UA.match(new RegExp(t, "i"));  
    Apple.Device = Apple.Device || Apple[t];  
}  
// is this an Apple device?  
//alert(  
  //  "Apple device? " + Apple.Device +  
   // "\niPhone? " + Apple.iPhone +  
    //"\niPod? " + Apple.iPod +  
    //"\niPad? " + Apple.iPad  
//);