detect mobile devices

devices.js

var m = navigator.userAgent.match(/(iPhone|iPad|iPod|Android|Windows Phone|BB10|PlayBook)/)
  , device = false

if (m && m.length) {
	if (/iPhone|iPad|iPod/.test(m[1])) {
		device = 'apple'
	} else if (/Android/.test(m[1])) {
		device = 'android'
	} else if (/Windows Phone/.test(m[1])) {
		device = 'windows'
	} else if (/BB10|PlayBook/.test(m[1])) {
		device = 'blackberry'
	}
}