Amazon: Redirect from amazon.com to amazon.de via ASIN

Asks if you want to go to the local amazon page using ASIN. Some parts are not availible on anamzon.de.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name           Amazon: Redirect from amazon.com to amazon.de via ASIN
// @namespace      https://greasyfork.org/de/scripts/22007
// @description    Asks if you want to go to the local amazon page using ASIN. Some parts are not availible on anamzon.de.

// @include        *.amazon.com/*
// @run-at         document-start

// @author         lukie80
// @copyright      Creative Commons Attribution-ShareAlike 3.0 Unported (CC-BY-SA 3.0)
// @license        http://creativecommons.org/licenses/by-sa/3.0/
// @version        1.0
// @lastupdated    2016.08.04
// 
// ==/UserScript==
//-------------------------------------------------------------------------------------------------------------------

//source: http://stackoverflow.com/a/1768114
var reASIN = RegExp("^(http[s]?://)?([\\w.-]+)(:[0-9]+)?/([\\w-%]+/)?(dp|gp/product|exec/obidos/asin)/(\\w+/)?(\\w{10})(.*)?$");
var matchArray =  window.location.href.match(reASIN);
if (matchArray) { 
  var cbox = confirm("Go to amazon.de? (ASIN: "+matchArray[7]+")");
  if (cbox == true) {  
    window.location.assign("http://www.amazon.de/dp/" + matchArray[7]); //"http://" prefix is important otherwise the URL is interpreted as relative
  }
}

//-------------------------------------------------------------------------------------------------------------------