/* *******************************************
// LICENSE INFORMATION
// The code, "Detecting Smartphones Using JavaScript" 
// by Anthony Hand, is licensed under a Creative Commons 
// Attribution 3.0 United States License. 
//
// Anthony Hand, ahand@hand-interactive.com
// Web: www.hand-interactive.com
// 
// License info: http://creativecommons.org/licenses/by/3.0/us/
//
// This code is provided “AS IS” with no expressed or implied warranty.  
// You have the right to use this code or any portion of it 
// so long as you provide credit toward myself as the original author.
//
// *******************************************
*/

//Initialize some initial string variables we'll look for later.
var deviceIphone = "iphone";
var deviceIpod = "ipod";
var devicePlaystation = "playstation";
var deviceWap = "wap";

var deviceWinMob = "windows ce";
var enginePie = "wm5 pie";
var deviceIeMob = "iemobile";

var deviceS60 = "series60";
var deviceSymbian = "symbian";
var deviceS60 = "series60";
var deviceS70 = "series70";
var deviceS80 = "series80";
var deviceS90 = "series90";

var deviceBB = "blackberry";
var deviceOpera = "opera";

var deviceAndroid = "android";

var deviceMidp = "midp";
var deviceWml = "wml";
var deviceBrew = "brew";

var devicePalm = "palm";
var engineXiino = "xiino";
var engineBlazer = "blazer"; //Old Palm

var devicePda = "pda";
var deviceNintendoDs = "nitro";

var engineWebKit = "webkit";
var engineNetfront = "netfront";


var manuSonyEricsson = "sonyericsson";
var manuericsson = "ericsson";
var manuSamsung1 = "sec-sgh";

var svcDocomo = "docomo";
var svcKddi = "kddi";
var svcVodafone = "vodafone";

//Due to the flexibility of the S60 OSSO Browser, 
//   you may wish to let new S60 devices get the regular pages instead.
var s60GetsMobile = true;


//Due to the flexibility of the iPhone/iPod Touch Browser, 
//   you may wish to let new S60 devices get the regular pages instead.
var iphoneIpodGetsMobile = true;


//Initialize our user agent string.
var uagent = navigator.userAgent.toLowerCase();


//**************************
// Detects if the current device is an iPhone.
function DetectIphone() {
    if (uagent.search(deviceIphone) > -1) {
        //The iPod touch says it's an iPhone! So let's disambiguate.
        if (uagent.search(deviceIpod) > -1)
            return false;
        else
            return true;
    }
    else
        return false;
}

//**************************
// Detects if the current device is an iPod Touch.
function DetectIpod() {
    if (uagent.search(deviceIpod) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current device is an iPhone or iPod Touch.
function DetectIphoneOrIpod() {
    //We repeat the searches here because some iPods 
    //  may report themselves as an iPhone, which is ok.
    if (uagent.search(deviceIphone) > -1 ||
       uagent.search(deviceIpod) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current device is an Android OS-based device.
function DetectAndroid() {
    if (uagent.search(deviceAndroid) > -1)
        return true;
    else
        return false;
}


//**************************
// Detects if the current device is an Android OS-based device and
//   the browser is based on WebKit.
function DetectAndroidWebKit() {
    if (DetectAndroid()) {
        if (DetectWebkit())
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current browser is based on WebKit.
function DetectWebkit() {
    if (uagent.search(engineWebKit) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is the Nokia S60 Open Source Browser.
function DetectS60OssBrowser() {
    if (DetectWebkit()) {
        if ((uagent.search(deviceS60) > -1 ||
          uagent.search(deviceSymbian) > -1))
            return true;
        else
            return false;
    }
    else
        return false;
}

//**************************
// Detects if the current device is any Symbian OS-based device,
//   including older S60, Series 70, Series 80, Series 90, and UIQ, 
//   or other browsers running on these devices.
function DetectSymbianOS() {
    if (uagent.search(deviceSymbian) > -1 ||
       uagent.search(deviceS60) > -1 ||
       uagent.search(deviceS70) > -1 ||
       uagent.search(deviceS80) > -1 ||
       uagent.search(deviceS90) > -1)
        return true;
    else
        return false;
}


//**************************
// Detects if the current browser is a BlackBerry of some sort.
function DetectOpera() {
    if (uagent.search(deviceOpera) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a BlackBerry of some sort.
function DetectBlackBerry() {
    if (uagent.search(deviceBB) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is a Windows Mobile device.
function DetectWindowsMobile() {
    //Most devices use 'Windows CE', but some report 'iemobile' 
    //  and some older ones report as 'PIE' for Pocket IE. 
    if (uagent.search(deviceWinMob) > -1 ||
       uagent.search(deviceIeMob) > -1 ||
       uagent.search(enginePie) > -1)
        return true;
    else
        return false;
}

//**************************
// Detects if the current browser is on a PalmOS device.
function DetectPalmOS() {
    //Most devices nowadays report as 'Palm', 
    //  but some older ones reported as Blazer or Xiino.
    if (uagent.search(devicePalm) > -1 ||
       uagent.search(engineBlazer) > -1 ||
       uagent.search(engineXiino) > -1)
        return true;
    else
        return false;
}

//**************************
// Sets whether S60 devices running the 
//   Open Source Browser (based on WebKit)
//   should be detected as 'mobile' or not.
//   Set TRUE to be detected as mobile.
//   Set FALSE and it will not be detected as mobile.
function SetS60GetsMobile(setMobile) {
    s60GetsMobile = setMobile;
};

//**************************
// Sets whether iPhone/iPod Touch devices running the 
//   Open Source Browser (based on WebKit)
//   should be detected as 'mobile' or not.
//   Set TRUE to be detected as mobile.
//   Set FALSE and it will not be detected as mobile.
function SetS60GetsMobile(setMobile) {
    iphoneIpodGetsMobile = setMobile;
};


//**************************
// Check to see whether the device is a 'smartphone'.
//   You might wish to send smartphones to a more capable web page
//   than a dumbed down WAP page. 
function DetectSmartphone() {
    //First, look for iPhone and iPod Touch.
    //if (DetectIphoneOrIpod())
        //return true;

    //Now, look for S60 Open Source Browser on S60 release 3 devices.
    if (DetectS60OssBrowser())
        return true;

    //Check for other Symbian devices - older S60, UIQ, other.
    if (DetectSymbianOS())
        return true;

    //Check for Windows Mobile devices.
    if (DetectWindowsMobile())
        return true;

    //Next, look for a BlackBerry
    if (DetectBlackBerry())
        return true;

    //PalmOS.
    if (DetectPalmOS())
        return true;

    //Opera.
    if (DetectOpera())
        return true;

    //Otherwise, return false.
    return false;
};


//**************************
// Detects if the current device is a mobile device.
//  This method catches most of the popular modern devices.
function DetectMobileQuick() {
    //Attempt to detect most mobile devices, 
    //   especially mass market feature phones.
    // NOTE: Doesn't usually work reliably...
    if (uagent.search(deviceWap) > -1 ||
	uagent.search(deviceMidp) > -1 ||
	uagent.search(deviceWml) > -1 ||
	uagent.search(deviceBrew) > -1) {
        return true;
    }

    //Detect for most smartphones.
    if (DetectSmartphone())
        return true;

    //Check for a NetFront browser
    if (uagent.search(engineNetfront) > -1)
        return true;

    //Check for a Playstation
    if (uagent.search(devicePlaystation) > -1)
        return true;

    //Check for a generic PDA
    if (uagent.search(devicePda) > -1)
        return true;

    return false;
};


//**************************
// Detects in a more comprehensive way if the current device is a mobile device.
function DetectMobileLonger() {
    //Run the quick check first.
    if (DetectMobileQuick())
        return true;

    //Check for NTT Docomo
    if (uagent.search(svcDocomo) > -1)
        return true;

    //Check for KDDI
    if (uagent.search(svcKddi) > -1)
        return true;

    //Check for Nintendo DS
    if (uagent.search(deviceNintendoDs) > -1)
        return true;

    //Check for Vodafone 3G
    if (uagent.search(svcVodafone) > -1)
        return true;

    //Finally, detect for certain very old devices with stupid useragent strings.
    if (uagent.search(manuSamsung1) > -1 ||
	uagent.search(manuSonyEricsson) > -1 ||
	uagent.search(manuericsson) > -1) {
        return true;
    }

    return false;
};