Calculates the correct Austrian tax (VAT) on amazon.de
// ==UserScript==
// @name amazon.de - Mehrwertsteuer für Österreich
// @name:de amazon.de - Mehrwertsteuer für Österreich
// @name:en amazon.de - Mehrwertsteuer (VAT) for Austria
// @version 1.4
// @namespace http://alphabeter.at/greasemonkey/
// @description Ändert die Preise auf amazon.de auf die österreichische Mehrwertsteuer
// @description:de Ändert die Preise auf amazon.de auf die österreichische Mehrwertsteuer
// @description:en Calculates the correct Austrian tax (VAT) on amazon.de
// @grant none
// @run-at document-idle
// @include *://*.amazon.de/*
// @include *://amazon.de/*
// @exclude */buy/*
// @icon 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yjB63ounuWsga7OKTuvLaEt9f72lw8u6BJA9rQYXTk/i9EEcTV3R9c0OiLk5hDvS+oXNlx5mItxT0Xd9R2vUn0PVVpkGoSGxu5kaEyQg2hB0v2ZXONE4+Ba7PYPdVzJBp4R97lb9RvxymZHM/Jc2vAsaZc5VMvVN+wO8QaI2B4IldpcdZgL+kOq6xepx0pMYRyBFcgNoNFGQAFpFzK4N+Ue8b58i6+4W8xB+bCnNpVWax1Q4EbXaaG8YEeitvUXZ2XLnRkY8jHcZschgtd6XL9lRnE/1eMGcft8k5JD7Evuiv0mBNzY42mvCz9P+EKqMA7wOyRAAAAAElFTkSuQmCC
// ==/UserScript==
(function () {
//elements, that get searched for prices: (small hack: sometimes there are two prices in <span>)
var amazonPriceElements = new Array("td", "font", "b", "span", "span");
//VAT in percent
var mwst_de = 19;
var mwst_at = 20;
//different VAT in percent for books
var mwst_buch_de = 7;
var mwst_buch_at = 10;
//------------------------------------------------------
mwst_de = 1 + mwst_de/100.0;
mwst_at = 1 + mwst_at/100.0;
mwst_buch_de = 1 + mwst_buch_de/100.0;
mwst_buch_at = 1 + mwst_buch_at/100.0;
//search every element, where amazon shows its prices (usually <span> or <td>)
for (j = 0; j < amazonPriceElements.length; j++)
{
var possiblePriceElements = document.getElementsByTagName(amazonPriceElements[j]);
for (i = 0; i < possiblePriceElements.length; i++)
{
var thisElement = possiblePriceElements[i];
var thisHTML = thisElement.innerHTML;
//search small nodes for prices
if (thisHTML.length < 200 && thisHTML.indexOf('EUR')!= -1)
{
thisHTML=thisHTML.replace("\n"," ").replace("\r"," ");
var priceRegEx = /(.*)EUR\s*([0-9,.]+)(.*)/;
priceRegEx.exec(thisHTML);
preHTML = RegExp.$1;
postHTML = RegExp.$3;
oldPrice = RegExp.$2;
//replace decimal point and 1000-sign
//convert to number
oldPrice=parseFloat(oldPrice.replace(".","").replace(",","."));
if (isNaN(oldPrice)) continue;
// calculate prices
newPrice1 = oldPrice / mwst_de * mwst_at;
newPrice1 = newPrice1.toFixed(2).replace(".",",");
newPrice2 = oldPrice / mwst_buch_de * mwst_buch_at;
newPrice2 = newPrice2.toFixed(2).replace(".",",");
thisElement.innerHTML=preHTML + "<span>€"+newPrice1 + '</span><span style="color:#611;"> [Buch €'+newPrice2 + "]</span>" +postHTML;
}
}
}
})();