var deviceIphone = "iphone";
var deviceIpod = "ipod";

var deviceS60 = "series60";
var deviceSymbian = "symbian";
var engineWebKit = "webkit";

var deviceAndroid = "android";

var deviceWinMob = "windows ce";

var deviceBB = "blackberry";

var devicePalm = "palm";

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


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


//**************************
// Detects if the current browser is the S60 Open Source Browser.
// Screen out older devices and the old WML browser.
function DetectS60OssBrowser() {
    if (uagent.search(engineWebKit) > -1) {
        if ((uagent.search(deviceS60) > -1 ||
          uagent.search(deviceSymbian) > -1))
            return true;
        else
            return false;
    }
    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 a Windows Mobile device.
function DetectWindowsMobile() {
    if (uagent.search(deviceWinMob) > -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 on a PalmOS device.
function DetectPalmOS() {
    if (uagent.search(devicePalm) > -1)
        return true;
    else
        return false;
}


function DetectMobile() {
    if (DetectIphoneOrIpod() || DetectS60OssBrowser() || DetectAndroid() || DetectWindowsMobile() || DetectBlackBerry() || DetectPalmOS())
        return true;
    else
        return false;
}