JS based mobile device detection for Tapatalk

tapadetect.js

/**
 * Tapatalk mobile detection
 * 
 * @author	Sascha Greuel <sascha@softcreatr.de>
 * @copyright	2013 Sascha Greuel
 * @license	Creative Commons BY-SA <http://creativecommons.org/licenses/by-sa/3.0/>
 */
 
function detectTapatalk() {
	var tapatalk_msg = 'This forum has an app for [platform]! Click OK to learn more about Tapatalk.',
		tapatalk_ios_url = 'https://itunes.apple.com/us/app/id585178888',
		tapatalk_ios_hd_url = 'https://itunes.apple.com/us/app/id481579541',
		tapatalk_kindle_url = 'http://www.amazon.com/gp/mas/dl/android?p=com.quoord.tapatalkpro.activity',
		tapatalk_kindle_hd_url = 'http://www.amazon.com/gp/mas/dl/android?p=com.quoord.tapatalkHD',
		tapatalk_android_url = 'https://play.google.com/store/apps/details?id=com.quoord.tapatalkpro.activity',
		tapatalk_android_hd_url = 'https://play.google.com/store/apps/details?id=com.quoord.tapatalkHD',
		tapatalk_blackberry_url = 'https://appworld.blackberry.com/webstore/content/46654/',
		tapatalk_windowsphone_url = 'https://www.windowsphone.com/s?appid=913ffd61-3ba0-435c-a894-9d3ec7e78d6e',
		ua = navigator.userAgent.toLowerCase();

	if ((ua.match(/iphone|ipod/))) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'iPhone'))) {
			window.location = tapatalk_ios_url;
		}
	} else if (ua.match(/ipad/)) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'iPad'))) {
			window.location = tapatalk_ios_hd_url;
		}
	} else if (ua.match(/silk/i)) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'Kindle'))) {
			window.location = (ua.match(/android 2/) ? tapatalk_kindle_url : tapatalk_kindle_hd_url);
		}
	} else if (ua.match(/android/)) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'Android'))) {
			window.location = (ua.match(/mobile/) ? tapatalk_android_url : tapatalk_android_hd_url);
		}
	} else if (ua.match(/blackberry/)) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'BlackBerry'))) {
			window.location = tapatalk_blackberry_url;
		}
	} else if (ua.match(/iemobile|windows phone/)) {
		if (window.confirm(tapatalk_msg.replace(/\[platform\]/gi, 'Windows Phone'))) {
			window.location = tapatalk_windowsphone_url;
		}
	}
}

function setTapatalkCookies() {
	var date = new Date(),
		days = 90,
		expires = '',
		domain = '';
	
	date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
	expires = '; expires=' + date.toGMTString();
	domain = '; path=/';
	document.cookie = 'tapatalk=false' + expires + domain;
}

if (navigator.cookieEnabled && document.cookie.indexOf('tapatalk=false') < 0) {
	setTapatalkCookies();
	detectTapatalk();
}