diff --git a/package.json b/package.json
index 55cb2ea..5d76776 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "title": "UA-Parser.JS",
   "name": "ua-parser-js",
-  "version": "0.4.16",
+  "version": "0.4.17",
   "author": "Faisal Salman <fyzlman@gmail.com> (http://faisalman.com)",
   "description": "Lightweight JavaScript-based user-agent string parser",
   "keywords": [
diff --git a/test.js b/test.js
index 8bb8bc5..7036a74 100644
--- a/test.js
+++ b/test.js
@@ -8,7 +8,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Arora',
-            version : '0.2'
+            version : '0.2',
+            major   : '0'
         }
     },
     {
@@ -17,7 +18,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Avant Browser',
-            version : undefined
+            version : undefined,
+            major   : undefined
         }
     },
     {
@@ -26,7 +28,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'baidubrowser',
-            version : '1.x'
+            version : '1.x',
+            major   : '1'
         }
     },
     {
@@ -35,7 +38,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Bolt',
-            version : '0.862'
+            version : '0.862',
+            major   : '0'
         }
     },
     {
@@ -44,7 +48,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Camino',
-            version : '2.0.9'
+            version : '2.0.9',
+            major   : '2'
         }
     },
     {
@@ -53,7 +58,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Chimera',
-            version : '0.6'
+            version : '0.6',
+            major   : '0'
         }
     },
     {
@@ -62,7 +68,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Chrome',
-            version : '20.0.1090.0'
+            version : '20.0.1090.0',
+            major   : '20'
         }
     },
     {
@@ -71,7 +78,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Chrome',
-            version : '19.0.1084.60'
+            version : '19.0.1084.60',
+            major   : '19'
         }
     },
     {
@@ -80,7 +88,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Chromium',
-            version : '16.0.912.21'
+            version : '16.0.912.21',
+            major   : '16'
         }
     },
     {
@@ -89,7 +98,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Chrome',
-            version : '16.0.912.75'
+            version : '16.0.912.75',
+            major   : '16'
         }
     },
     {
@@ -98,7 +108,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Dillo',
-            version : '2.2'
+            version : '2.2',
+            major   : '2'
         }
     },
     {
@@ -107,7 +118,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Dolphin',
-            version : '2.0'
+            version : '2.0',
+            major   : '2'
         }
     },
     {
@@ -116,7 +128,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Doris',
-            version : '1.15'
+            version : '1.15',
+            major   : '1'
         }
     },
     {
@@ -125,7 +138,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Epiphany',
-            version : '1.2.6'
+            version : '1.2.6',
+            major   : '1'
         }
     },
     {
@@ -134,7 +148,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Firebird',
-            version : '0.7'
+            version : '0.7',
+            major   : '0'
         }
     },
     {
@@ -143,7 +158,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Firefox',
-            version : '15.0a2'
+            version : '15.0a2',
+            major   : '15'
         }
     },
     {
@@ -152,7 +168,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Fennec',
-            version : '1.0a1'
+            version : '1.0a1',
+            major   : '1'
         }
     },
     {
@@ -161,7 +178,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Flock',
-            version : '2.0'
+            version : '2.0',
+            major   : '2'
         }
     },
     {
@@ -170,7 +188,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'GoBrowser',
-            version : '1.6.91'
+            version : '1.6.91',
+            major   : '1'
         }
     },
     {
@@ -179,7 +198,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Iceape',
-            version : '2.0.14'
+            version : '2.0.14',
+            major   : '2'
         }
     },
     {
@@ -188,7 +208,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'IceCat',
-            version : '3.0.3-g1'
+            version : '3.0.3-g1',
+            major   : '3'
         }
     },
     {
@@ -197,7 +218,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Iceweasel',
-            version : '3.0.6'
+            version : '3.0.6',
+            major   : '3'
         }
     },
     {
@@ -206,7 +228,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'iCab',
-            version : '2.9.5'
+            version : '2.9.5',
+            major   : '2'
         }
     },
     {
@@ -215,7 +238,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'IEMobile',
-            version : '7.11'
+            version : '7.11',
+            major   : '7'
         }
     },
     {
@@ -224,7 +248,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'K-Meleon',
-            version : '0.8.2'
+            version : '0.8.2',
+            major   : '0'
         }
     },
     {
@@ -233,7 +258,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Kindle',
-            version : '2.5'
+            version : '2.5',
+            major   : '2'
         }
     }, 
     {
@@ -242,7 +268,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Konqueror',
-            version : '3.5'
+            version : '3.5',
+            major   : '3'
         }
     },
     {
@@ -251,7 +278,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Lunascape',
-            version : '5.1.4.5'
+            version : '5.1.4.5',
+            major   : '5'
         }
     },
     {
@@ -260,7 +288,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Lynx',
-            version : '2.8.5dev.16'
+            version : '2.8.5dev.16',
+            major   : '2'
         }
     },
     {
@@ -269,7 +298,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Maemo Browser',
-            version : '1.7.4.8'
+            version : '1.7.4.8',
+            major   : '1'
         }
     },
     {
@@ -278,7 +308,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Maxthon',
-            version : undefined
+            version : undefined,
+            major   : undefined
         }
     },
     {
@@ -287,7 +318,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Midori',
-            version : '0.2.2'
+            version : '0.2.2',
+            major   : '0'
         }
     },
     {
@@ -296,7 +328,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Minimo',
-            version : '0.020'
+            version : '0.020',
+            major   : '0'
         }
     },
     {
@@ -305,7 +338,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Mobile Safari',
-            version : '4.0.5'
+            version : '4.0.5',
+            major   : '4'
         }
     },
     {
@@ -314,7 +348,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Mosaic',
-            version : '2.6'
+            version : '2.6',
+            major   : '2'
         }
     },
     {
@@ -323,7 +358,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Mozilla',
-            version : '5.0'
+            version : '5.0',
+            major   : '5'
         }
     },
     {
@@ -332,7 +368,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'IE',
-            version : '5.0b1'
+            version : '5.0b1',
+            major   : '5'
         }
     },
     {
@@ -341,7 +378,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'NetFront',
-            version : '3.0'
+            version : '3.0',
+            major   : '3'
         }
     },
     {
@@ -350,7 +388,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Netscape',
-            version : '9.0'
+            version : '9.0',
+            major   : '9'
         }
     },
     {
@@ -359,7 +398,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Netscape',
-            version : '8.0.1'
+            version : '8.0.1',
+            major   : '8'
         }
     },
     {
@@ -368,7 +408,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'NokiaBrowser',
-            version : '7.3.1.37'
+            version : '7.3.1.37',
+            major   : '7'
         }
     },
     {
@@ -377,7 +418,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'OmniWeb',
-            version : '558.48'
+            version : '558.48',
+            major   : '558'
         }
     },
     {
@@ -386,7 +428,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera',
-            version : '10.10'
+            version : '10.10',
+            major   : '10'
         }
     },
     {
@@ -395,7 +438,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera',
-            version : '6.01'
+            version : '6.01',
+            major   : '6'
         }
     },
     {
@@ -404,7 +448,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera',
-            version : '8.5'
+            version : '8.5',
+            major   : '8'
         }
     },
     {
@@ -413,7 +458,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera Mobi',
-            version : '11.50'
+            version : '11.50',
+            major   : '11'
         }
     },
     {
@@ -422,7 +468,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera Mini',
-            version : '5.1.21214'
+            version : '5.1.21214',
+            major   : '5'
         }
     },
     {
@@ -431,7 +478,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Opera Tablet',
-            version : '11.1'
+            version : '11.1',
+            major   : '11'
         }
     },
     {
@@ -440,7 +488,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Phoenix',
-            version : '0.4'
+            version : '0.4',
+            major   : '0'
         }
     },
     {
@@ -449,7 +498,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Polaris',
-            version : '6.0'
+            version : '6.0',
+            major   : '6'
         }
     },
     {
@@ -458,7 +508,18 @@ var browsers    = [
         expect  : 
         {
             name    : 'RockMelt',
-            version : '0.8.36.78'
+            version : '0.8.36.78',
+            major   : '0'
+        }
+    },
+    {
+        desc    : 'Safari',
+        ua      : 'Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/533.17.8 (KHTML, like Gecko) Version/5.0.1 Safari/533.17.8',
+        expect  : 
+        {
+            name    : 'Safari',
+            version : '5.0.1',
+            major   : '5'
         }
     },
     {
@@ -467,7 +528,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Safari',
-            version : '2.0.4'
+            version : '2.0.4',
+            major   : '2'
         }
     },
     {
@@ -476,7 +538,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'SeaMonkey',
-            version : '2.0b1pre'
+            version : '2.0b1pre',
+            major   : '2'
         }
     },
     {
@@ -485,7 +548,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Silk',
-            version : '1.1.0-84'
+            version : '1.1.0-84',
+            major   : '1'
         }
     },
     {
@@ -494,7 +558,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Skyfire',
-            version : '2.0'
+            version : '2.0',
+            major   : '2'
         }
     },
     {
@@ -503,7 +568,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'SlimBrowser',
-            version : undefined
+            version : undefined,
+            major   : undefined
         }
     },
     {
@@ -512,7 +578,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Swiftfox',
-            version : undefined
+            version : undefined,
+            major   : undefined
         }
     },
     {
@@ -521,7 +588,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Tizen Browser',
-            version : '1.0'
+            version : '1.0',
+            major   : '1'
         }
     },
     {
@@ -530,7 +598,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'UCBrowser',
-            version : '8.2.1.144'
+            version : '8.2.1.144',
+            major   : '8'
         }
     },
     {
@@ -539,7 +608,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'UC Browser',
-            version : '8.4.0.159'
+            version : '8.4.0.159',
+            major   : '8'
         }
     },
     {
@@ -548,7 +618,8 @@ var browsers    = [
         expect  : 
         {
             name    : 'Yandex',
-            version : '1.0.1084.5402'
+            version : '1.0.1084.5402',
+            major   : '1'
         }
     }];
 
@@ -616,6 +687,548 @@ var engines = [
             version : '533.19.4'
         }
 }];
+
+var os = [
+    {
+        desc    : 'Windows 95',
+        ua      : 'Mozilla/1.22 (compatible; MSIE 2.0; Windows 95)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : '95'
+        }
+    },
+    {
+        desc    : 'Windows 98',
+        ua      : 'Mozilla/4.0 (compatible; MSIE 4.01; Windows 98)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : '98'
+        }
+    },
+    {
+        desc    : 'Windows ME',
+        ua      : 'Mozilla/5.0 (Windows; U; Win 9x 4.90) Gecko/20020502 CS 2000 7.0/7.0',
+        expect  :
+        {
+            name    : 'Windows',
+            version : 'ME'
+        }
+    },
+    {
+        desc    : 'Windows 2000',
+        ua      : 'Mozilla/3.0 (compatible; MSIE 3.0; Windows NT 5.0)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : '2000'
+        }
+    },
+    {
+        desc    : 'Windows XP',
+        ua      : 'Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 5.2)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : 'XP'
+        }
+    },
+    {
+        desc    : 'Windows Vista',
+        ua      : 'Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 6.0; fr-FR)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : 'Vista'
+        }
+    },
+    {
+        desc    : 'Windows 7',
+        ua      : 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : '7'
+        }
+    },
+    {
+        desc    : 'Windows 8',
+        ua      : 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.2; Win64; x64; Trident/6.0; .NET4.0E; .NET4.0C)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : '8'
+        }
+    },
+    {
+        desc    : 'Windows RT',
+        ua      : 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; ARM; Trident/6.0)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : 'RT'
+        }
+    },
+    {
+        desc    : 'Windows CE',
+        ua      : 'Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11)',
+        expect  :
+        {
+            name    : 'Windows',
+            version : 'CE'
+        }
+    },
+    {
+        desc    : 'Windows Mobile',
+        ua      : 'Mozilla/5.0 (ZTE-E_N72/N72V1.0.0B02;U;Windows Mobile/6.1;Profile/MIDP-2.0 Configuration/CLDC-1.1;320*240;CTC/2.0) IE/6.0 (compatible; MSIE 4.01; Windows CE; PPC)/UC Browser7.7.1.88',
+        expect  :
+        {
+            name    : 'Windows Mobile',
+            version : '6.1'
+        }
+    },
+    {
+        desc    : 'Windows Phone OS',
+        ua      : 'Mozilla/4.0 (compatible; MSIE 7.0; Windows Phone OS 7.0; Trident/3.1; IEMobile/7.0; DELL; Venue Pro)',
+        expect  :
+        {
+            name    : 'Windows Phone OS',
+            version : '7.0'
+        }
+    },
+    {
+        desc    : 'BlackBerry',
+        ua      : 'BlackBerry9300/5.0.0.912 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/378',
+        expect  :
+        {
+            name    : 'BlackBerry',
+            version : '5.0.0.912'
+        }
+    },
+    {
+        desc    : 'BlackBerry 10',
+        ua      : 'Mozilla/5.0 (BB10; Touch) AppleWebKit/537.3+ (KHTML, like Gecko) Version/10.0.9.386 Mobile Safari/537.3+',
+        expect  :
+        {
+            name    : 'BlackBerry',
+            version : '10'
+        }
+    },
+    {
+        desc    : 'Tizen',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Android',
+        ua      : 'Mozilla/5.0 (Linux; U; Android 2.2.2; en-us; VM670 Build/FRG83G) AppleWebKit/533.1 (KHTML, like Gecko)',
+        expect  :
+        {
+            name    : 'Android',
+            version : '2.2.2'
+        }
+    },
+    {
+        desc    : 'WebOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Palm OS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'QNX',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Bada',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'RIM Tablet OS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'MeeGo',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Symbian',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Nintendo',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'PlayStation',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Mint',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Joli',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Ubuntu',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Debian',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'OpenSUSE',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Gentoo',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Arch',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Slackware',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Fedora',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Mandriva',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'CentOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'PCLinuxOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'RedHat',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Zenwalk',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Hurd',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Linux',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'GNU',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Chromium OS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Solaris',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'FreeBSD',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'OpenBSD',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'NetBSD',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'DragonFly',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'iOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Mac OS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Haiku',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'AIX',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Plan9',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'Minix',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'BeOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'OS/2',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'AmigaOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'MorphOS',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : 'UNIX',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+    },
+    {
+        desc    : '',
+        ua      : '',
+        expect  :
+        {
+            name    : '',
+            version : ''
+        }
+}];
     
 describe('getBrowser', function () {    
     
@@ -634,6 +1247,10 @@ describe('getBrowser', function () {
                 it('should return browser version: ' + expect.version, function () {
                     assert.equal(result.version, expect.version);
                 });
+                
+                it('should return browser major version: ' + expect.major, function () {
+                    assert.equal(result.major, expect.major);
+                });
             });
         });
     }
@@ -660,3 +1277,28 @@ describe('getEngine', function () {
         });
     }
 });
+
+describe('getOS', function () {    
+    
+    for (var i in os) {
+    
+        if (os[i].ua) {
+
+            describe('[' + os[i].desc + ']', function () {
+                describe('"' + os[i].ua + '"', function () {
+                
+                    var expect = os[i].expect;
+                    var result = parser.setUA(os[i].ua).getOS();
+                    
+                    it('should return OS name: ' + expect.name, function () {
+                        assert.equal(result.name, expect.name);
+                    });
+                    
+                    it('should return OS version: ' + expect.version, function () {
+                        assert.equal(result.version, expect.version);
+                    });
+                });
+            });
+        }
+    }
+});
diff --git a/ua-parser.js b/ua-parser.js
index 54cb09a..dec971c 100644
--- a/ua-parser.js
+++ b/ua-parser.js
@@ -1,4 +1,4 @@
-// UA-Parser.JS v0.4.16
+// UA-Parser.JS v0.4.17
 // Lightweight JavaScript-based User-Agent string parser
 // https://github.com/faisalman/ua-parser-js
 //
@@ -178,7 +178,7 @@
                                                                                 // Iceweasel/Camino/Chimera/Fennec/Maemo/Minimo
             /(firefox|seamonkey|k-meleon|icecat|iceape|firebird|phoenix)\/((\d+)?[\w\.-]+)/i,
                                                                                 // Firefox/SeaMonkey/K-Meleon/IceCat/IceApe/Firebird/Phoenix
-            /(mozilla)\/([\w\.]+).+rv\:.+gecko\/\d+/i,                          // Mozilla
+            /(mozilla)\/((\d+)?[\w\.]+).+rv\:.+gecko\/\d+/i,                    // Mozilla
 
             // Other
             /(uc\s?browser|polaris|lynx|dillo|icab|doris)[\/\s]?((\d+)?[\w\.]+)/i,
@@ -271,7 +271,7 @@
 
             // Windows based
             /(windows)\snt\s6\.2;\s(arm)/i,                                     // Windows RT
-            /(windows\sphone\sos|windows\s?[mobile]*)[\s\/]?([ntce\d\.\s]+\w)/i
+            /(windows\sphone\sos|windows\smobile|windows)[\s\/]?([ntce\d\.\s]+\w)/i
             ], ['name', ['version', mapper.string, maps.os.windows.version]], [
             /(win(?=3|9|n)|win\s9x\s)([nt\d\.]+)/i
             ], [['name', 'Windows'], ['version', mapper.string, maps.os.windows.version]], [
@@ -279,7 +279,7 @@
             // Mobile/Embedded OS
             /\((bb)(10);/i                                                      // BlackBerry 10
             ], [['name', 'BlackBerry'], 'version'], [
-            /(blackberry).+version\/([\w\.]+)/i,                                // Blackberry
+            /(blackberry)\w*\/?([\w\.]+)*/i,                                    // Blackberry
             /(tizen)\/([\w\.]+)/i,                                              // Tizen
             /(android|webos|palm\os|qnx|bada|rim\stablet\sos|meego)[\/\s-]?([\w\.]+)*/i
                                                                                 // Android/WebOS/Palm/QNX/Bada/RIM/MeeGo
@@ -318,8 +318,8 @@
             // Other
             /(haiku)\s(\w+)/i,                                                  // Haiku
             /(aix)\s((\d)(?=\.|\)|\s)[\w\.]*)*/i,                               // AIX                    
-            /(macintosh|mac(?=_powerpc)|plan\s9|minix|beos|qnx|os\/2|amigaos|morphos)/i,
-                                                                                // Plan9/Minix/BeOS/QNX/OS2/AmigaOS/MorphOS
+            /(macintosh|mac(?=_powerpc)|plan\s9|minix|beos|os\/2|amigaos|morphos)/i,
+                                                                                // Plan9/Minix/BeOS/OS2/AmigaOS/MorphOS
             /(unix)\s?([\w\.]+)*/i                                              // UNIX
             ], ['name', 'version']
         ]
diff --git a/ua-parser.min.js b/ua-parser.min.js
index 256a4f2..70655d7 100644
--- a/ua-parser.min.js
+++ b/ua-parser.min.js
@@ -1,7 +1,7 @@
-// UA-Parser.JS v0.4.16
+// UA-Parser.JS v0.4.17
 // Lightweight JavaScript-based User-Agent string parser
 // https://github.com/faisalman/ua-parser-js
 //
 // Copyright © 2012 Faisalman
 // Dual licensed under GPLv2 & MIT
-(function(e,t){"use strict";var n={regex:function(){var e,n,r,i,s,o,u=arguments;for(n=0;n<u.length;n+=2){var a=u[n],f=u[n+1];if(typeof e=="undefined"){e={};for(i=0;i<f.length;i++)typeof f[i]=="object"?e[f[i][0]]=t:e[f[i]]=t;if(this.getUA().toString()==="")return e}for(r=0;r<a.length;r++){s=a[r].exec(this.getUA());if(!!s){for(i=0;i<f.length;i++)o=s[i+1],typeof f[i]=="object"&&f[i].length===2?e[f[i][0]]=f[i][1]:typeof f[i]=="object"&&f[i].length===3?typeof f[i][1]=="function"&&(!f[i][1].exec||!f[i][1].test)?e[f[i][0]]=o?f[i][1].call(this,o,f[i][2]):t:e[f[i][0]]=o?o.replace(f[i][1],f[i][2]):t:e[f[i]]=o?o:t;break}}if(!!s)break}return e},string:function(e,n){for(var r in n)if(n.hasOwnProperty(r))if(typeof n[r]=="object"&&n[r].length>0){for(var i=0;i<n[r].length;i++)if(e.toLowerCase().indexOf(n[r][i].toLowerCase())!==-1)return r.toString()==="undefined"?t:r}else if(e.toLowerCase().indexOf(n[r].toLowerCase())!==-1)return r.toString()==="undefined"?t:r;return e}},r={browser:{oldsafari:{major:{1:["/85","/125","/312"],2:["/412","/416","/417","/419"],"undefined":"/"},version:{"1.0":"/85",1.2:"/125",1.3:"/312","2.0":"/412","2.0.2":"/416","2.0.3":"/417","2.0.4":"/419","undefined":"/"}}},os:{windows:{version:{ME:"4.90","NT 3.11":"NT3.51","NT 4.0":"NT4.0",2e3:"NT 5.0",XP:["NT 5.1","NT 5.2"],Vista:"NT 6.0",7:"NT 6.1",8:"NT 6.2",RT:"ARM"}}}},i={browser:[[/(opera\smini)\/((\d+)?[\w\.-]+)/i,/(opera\s[mobiletab]+).+version\/((\d+)?[\w\.-]+)/i,/(opera).+version\/((\d+)?[\w\.]+)/i,/(opera)[\/\s]+((\d+)?[\w\.]+)/i,/(kindle)\/((\d+)?[\w\.]+)/i,/(lunascape|maxthon|netfront|jasmine|blazer)[\/\s]?((\d+)?[\w\.]+)*/i,/(avant\sbrowser|iemobile|slimbrowser|baidubrowser)[\/\s]?((\d+)?[\w\.]*)/i,/ms(ie)\s((\d+)?[\w\.]+)/i,/(chromium|flock|rockmelt|midori|epiphany|silk|skyfire|ovibrowser|bolt)\/((\d+)?[\w\.-]+)/i],["name","version","major"],[/(yabrowser)\/((\d+)?[\w\.]+)/i],[["name","Yandex"],"version","major"],[/(chrome|omniweb|arora|[tizenoka]{5}\s?browser)\/v?((\d+)?[\w\.]+)/i],["name","version","major"],[/(dolfin)\/((\d+)?[\w\.]+)/i],[["name","Dolphin"],"version","major"],[/((?:android.+)crmo|crios)\/((\d+)?[\w\.]+)/i],[["name","Chrome"],"version","major"],[/version\/((\d+)?[\w\.]+).+?mobile\/\w+\s(safari)/i],["version","major",["name","Mobile Safari"]],[/version\/((\d+)?[\w\.]+).+?(mobile\s?safari|safari)/i],["version","major","name"],[/applewebkit.+?(mobile\s?safari|safari)((\/[\w\.]+))/i],["name",["major",n.string,r.browser.oldsafari.major],["version",n.string,r.browser.oldsafari.version]],[/(konqueror)\/((\d+)?[\w\.]+)/i,/(applewebkit|khtml)\/((\d+)?[\w\.]+)/i],["name","version","major"],[/(navigator|netscape)\/((\d+)?[\w\.-]+)/i],[["name","Netscape"],"version","major"],[/(swiftfox)/i,/(iceweasel|camino|chimera|fennec|maemo\sbrowser|minimo)[\/\s]?((\d+)?[\w\.\+]+)/i,/(firefox|seamonkey|k-meleon|icecat|iceape|firebird|phoenix)\/((\d+)?[\w\.-]+)/i,/(mozilla)\/([\w\.]+).+rv\:.+gecko\/\d+/i,/(uc\s?browser|polaris|lynx|dillo|icab|doris)[\/\s]?((\d+)?[\w\.]+)/i,/(gobrowser)\/?((\d+)?[\w\.]+)*/i,/(mosaic)[\/\s]((\d+)?[\w\.]+)/i],["name","version","major"]],device:[[/\((ipad|playbook);[\w\s\);-]+(rim|apple)/i],["model","vendor",["type","Tablet"]],[/(hp).+(touchpad)/i,/(kindle)\/([\w\.]+)/i,/\s(nook)[\w\s]+build\/(\w+)/i,/(dell)\s(strea[kpr\s\d]*[\dko])/i],["vendor","model",["type","Tablet"]],[/\((ip[honed]+);.+(apple)/i],["model","vendor",["type","Mobile"]],[/(blackberry)[\s-]?(\w+)/i,/(blackberry|benq|palm(?=\-)|sonyericsson|acer|asus|dell|huawei|meizu|motorola)[\s_-]?([\w-]+)*/i,/(hp)\s([\w\s]+\w)/i,/(asus)-?(\w+)/i],["vendor","model",["type","Mobile"]],[/\((bb10);\s(\w+)/i],[["vendor","BlackBerry"],"model",["type","Mobile"]],[/android.+((transfo[prime\s]{4,10}\s\w+|eeepc|slider\s\w+))/i],[["vendor","Asus"],"model",["type","Tablet"]],[/(sony)\s(tablet\s[ps])/i],["vendor","model",["type","Tablet"]],[/(nintendo|playstation)\s([wids3portablev]+)/i],["vendor","model",["type","Console"]],[/(htc)[;_\s-]+([\w\s]+(?=\))|\w+)*/i,/(zte)-(\w+)*/i],["vendor",["model",/_/g," "],["type","Mobile"]],[/\s((milestone|droid[2x]?))[globa\s]*\sbuild\//i,/(mot)[\s-]?(\w+)*/i],[["vendor","Motorola"],"model",["type","Mobile"]],[/android.+\s((mz60\d|xoom[\s2]{0,2}))\sbuild\//i],[["vendor","Motorola"],"model",["type","Tablet"]],[/android.+((sch-i[89]0\d|shw-m380s|gt-p\d{4}|gt-n8000|sgh-t8[56]9))/i],[["vendor","Samsung"],"model",["type","Tablet"]],[/((s[cgp]h-\w+|gt-\w+|galaxy\snexus))/i,/(sam[sung]*)[\s-]*(\w+-?[\w-]*)*/i,/sec-((sgh\w+))/i],[["vendor","Samsung"],"model",["type","Mobile"]],[/(sie)-(\w+)*/i],[["vendor","Siemens"],"model",["type","Mobile"]],[/(maemo|nokia).*(n900|lumia\s\d+)/i,/(nokia)[\s_-]?([\w-]+)*/i],[["vendor","Nokia"],"model",["type","Mobile"]],[/android\s3\.[\s\w-;]{10}((a\d{3}))/i],[["vendor","Acer"],"model",["type","Tablet"]],[/android\s3\.[\s\w-;]{10}(lg?)-([06cv9]{3,4})/i],[["vendor","LG"],"model",["type","Tablet"]],[/(lg)[e;\s-\/]+(\w+)*/i],[["vendor","LG"],"model",["type","Mobile"]],[/(mobile|tablet);.+rv\:.+gecko\//i],["type","vendor","model"]],engine:[[/(presto)\/([\w\.]+)/i,/(webkit|trident|netfront)\/([\w\.]+)/i,/(khtml)\/([\w\.]+)/i,/(tasman)\s([\w\.]+)/i],["name","version"],[/rv\:([\w\.]+).*(gecko)/i],["version","name"]],os:[[/(windows)\snt\s6\.2;\s(arm)/i,/(windows\sphone\sos|windows\s?[mobile]*)[\s\/]?([ntce\d\.\s]+\w)/i],["name",["version",n.string,r.os.windows.version]],[/(win(?=3|9|n)|win\s9x\s)([nt\d\.]+)/i],[["name","Windows"],["version",n.string,r.os.windows.version]],[/\((bb)(10);/i],[["name","BlackBerry"],"version"],[/(blackberry).+version\/([\w\.]+)/i,/(tizen)\/([\w\.]+)/i,/(android|webos|palm\os|qnx|bada|rim\stablet\sos|meego)[\/\s-]?([\w\.]+)*/i],["name","version"],[/(symbian\s?os|symbos|s60(?=;))[\/\s-]?([\w\.]+)*/i],[["name","Symbian"],"version"],[/(nintendo|playstation)\s([wids3portablev]+)/i,/(mint)[\/\s\(]?(\w+)*/i,/(joli|[kxln]?ubuntu|debian|[open]*suse|gentoo|arch|slackware|fedora|mandriva|centos|pclinuxos|redhat|zenwalk)[\/\s-]?([\w\.-]+)*/i,/(hurd|linux)\s?([\w\.]+)*/i,/(gnu)\s?([\w\.]+)*/i],["name","version"],[/(cros)\s[\w]+\s([\w\.]+\w)/i],[["name","Chromium OS"],"version"],[/(sunos)\s?([\w\.]+\d)*/i],[["name","Solaris"],"version"],[/\s(\w*bsd|dragonfly)\s?([\w\.]+)*/i],["name","version"],[/(ip[honead]+).*os\s*([\w]+)*\slike\smac/i],[["name","iOS"],["version",/_/g,"."]],[/(mac\sos\sx)\s?([\w\s\.]+\w)*/i],["name",["version",/_/g,"."]],[/(haiku)\s(\w+)/i,/(aix)\s((\d)(?=\.|\)|\s)[\w\.]*)*/i,/(macintosh|mac(?=_powerpc)|plan\s9|minix|beos|qnx|os\/2|amigaos|morphos)/i,/(unix)\s?([\w\.]+)*/i],["name","version"]]},s=function(r){var s=r||(e&&e.navigator&&e.navigator.userAgent?e.navigator.userAgent:"");this.getBrowser=function(){return n.regex.apply(this,i.browser)},this.getDevice=function(){return n.regex.apply(this,i.device)},this.getEngine=function(){return n.regex.apply(this,i.engine)},this.getOS=function(){return n.regex.apply(this,i.os)},this.getResult=function(){return{browser:this.getBrowser(),engine:this.getEngine(),os:this.getOS(),device:this.getDevice()}},this.getUA=function(){return s},this.setUA=function(e){return s=e,this},this.setUA(s)};typeof exports!="undefined"&&!/\[object\s[DOM]*Window\]/.test(e.toString())?(typeof module!="undefined"&&module.exports&&(exports=module.exports=s),exports.UAParser=s):e.UAParser=s})(this);
\ No newline at end of file
+(function(e,t){"use strict";var n={regex:function(){var e,n,r,i,s,o,u=arguments;for(n=0;n<u.length;n+=2){var a=u[n],f=u[n+1];if(typeof e=="undefined"){e={};for(i=0;i<f.length;i++)typeof f[i]=="object"?e[f[i][0]]=t:e[f[i]]=t;if(this.getUA().toString()==="")return e}for(r=0;r<a.length;r++){s=a[r].exec(this.getUA());if(!!s){for(i=0;i<f.length;i++)o=s[i+1],typeof f[i]=="object"&&f[i].length===2?e[f[i][0]]=f[i][1]:typeof f[i]=="object"&&f[i].length===3?typeof f[i][1]=="function"&&(!f[i][1].exec||!f[i][1].test)?e[f[i][0]]=o?f[i][1].call(this,o,f[i][2]):t:e[f[i][0]]=o?o.replace(f[i][1],f[i][2]):t:e[f[i]]=o?o:t;break}}if(!!s)break}return e},string:function(e,n){for(var r in n)if(n.hasOwnProperty(r))if(typeof n[r]=="object"&&n[r].length>0){for(var i=0;i<n[r].length;i++)if(e.toLowerCase().indexOf(n[r][i].toLowerCase())!==-1)return r.toString()==="undefined"?t:r}else if(e.toLowerCase().indexOf(n[r].toLowerCase())!==-1)return r.toString()==="undefined"?t:r;return 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\ No newline at end of file