// android
var ua = navigator.userAgent.toLowerCase();
var isAndroid = ua.indexOf("android") > -1; //&& ua.indexOf("mobile");
if(isAndroid) {
  // Do something!
  // Redirect to Android-site?
  window.location = 'http://sanic.com.ar/mobile';
}

// ipad
// For use within normal web clients 
var isiPad = navigator.userAgent.match(/iPad/i) != null;

// For use within iPad developer UIWebView
// Thanks to Andrew Hedges!
var ua = navigator.userAgent;
var isiPad = /iPad/i.test(ua) || /iPhone OS 3_1_2/i.test(ua) || /iPhone OS 3_2_2/i.test(ua);

// iphone/ipod
if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))) {
   if (document.cookie.indexOf("iphone_redirect=false") == -1) window.location = "http://www.sanic.com.ar/mobile";
}