Add a link of amazon gift cards to options page

simple-translate/_locales/en/messages.json

@@ -143,9 +143,15 @@
     "donationCaptionLabel": {
         "message": "Thank you for using Simple Translate.<br>Your support will be a big encouragement, as I continue to develop the add-on.<br>If you like Simple Translate, I would be pleased if you could consider donating."
     },
+    "amazonTitleLabel": {
+        "message": "amazon.co.jp eGift Cards"
+    },
     "addonPageLabel": {
         "message": "Add-on page"
     },
+    "amazonUrl": {
+        "message": "https://www.amazon.co.jp/dp/B004N3APGO?language=en_US"
+    },
     "addonUrl": {
         "message": "https:\/\/addons.mozilla.org\/en-US\/firefox\/addon\/simple-translate\/?src=optionpage"
     },

simple-translate/options/options.html

@@ -333,6 +333,17 @@
                     </div>
                 </li>
 
+                <li>
+                    <div class=optionContainer>
+                        <div class="optionText">
+                            <a class=amazonUrl href="https://www.amazon.co.jp/dp/B004N3APGO?language=ja_JP" target="_blank">
+                                <span class="amazonTitleLabel pageLink caption">amazonギフト券 Eメールタイプ</span>
+                            </a>
+                            <p class=caption>email: sienori.firefox+st@gmail.com</p>
+                        </div>
+                    </div>
+                </li>
+
                 <hr>
 
                 <li>

simple-translate/options/ui.js

@@ -42,3 +42,4 @@ function readHash(e) {
 }
 
 document.getElementsByClassName("addonUrl")[0].href = browser.i18n.getMessage("addonUrl");
+document.getElementsByClassName("amazonUrl")[0].href = browser.i18n.getMessage("amazonUrl");