DeviceDetection = function ()
{
    this.construct = function (userAgent) {
        "undefined" == typeof userAgent && (userAgent = navigator.userAgent);
        this.userAgent = userAgent;
        this.checks = {
            iphone:             Boolean(userAgent.match(/iPhone/)),
            ipod:               Boolean(userAgent.match(/iPod/)),
            ipad:               Boolean(userAgent.match(/iPad/)),
            blackberry:         Boolean(userAgent.match(/BlackBerry/)),
            playbook:           Boolean(userAgent.match(/PlayBook/)),
            android:            Boolean(userAgent.match(/Android/)),
            macOS:              Boolean(userAgent.match(/Mac OS X/)),
            win:                Boolean(userAgent.match(/Windows/)),
            mac:                Boolean(userAgent.match(/Macintosh/)),
            wphone:             Boolean(userAgent.match(/(Windows Phone OS|Windows CE|Windows Mobile)/)),
            mobile:             Boolean(userAgent.match(/Mobile/)),
            androidTablet:      Boolean(userAgent.match(/(GT-P1000|SGH-T849|SHW-M180S)/)),
            tabletPc:           Boolean(userAgent.match(/Tablet PC/)),
            palmDevice:         Boolean(userAgent.match(/(PalmOS|PalmSource| Pre\/)/)),
            kindle:             Boolean(userAgent.match(/(Kindle)/)),
            otherMobileHints:   Boolean(userAgent.match(/(Opera Mini|IEMobile|SonyEricsson|smartphone)/))
        }
    };
    this.isTouchDevice = function () {
        return this.checks.iphone || this.checks.ipod || this.checks.ipad
    };
    this.isApple = function () {
        return this.checks.iphone || this.checks.ipod || this.checks.ipad || this.checks.macOS || this.checks.mac
    };
    this.isIOS = function () {
        return this.checks.iphone || this.checks.ipod || this.checks.ipad
    };
    this.isBlackberry = function () {
        return this.checks.blackberry
    };
    this.isAndroid = function () {
        return this.checks.android
    };
    this.isTablet = function () {
        return this.checks.ipad || this.checks.tabletPc || this.checks.playbook || this.checks.androidTablet || this.checks.kindle
    };
    this.isDesktop = function () {
        return !this.isTouchDevice() && !this.isSmartPhone() && !this.isTablet()
    };
    this.isSmartPhone = function () {
        return (this.checks.mobile || this.checks.blackberry || this.checks.palmDevice || this.checks.otherMobileHints) && !this.isTablet() && !this.checks.ipod
    };
    this.construct();
    return this
};