diff --git a/js/global.js b/js/global.js
index 4f36db6..cec5429 100644
--- a/js/global.js
+++ b/js/global.js
@@ -1,4 +1,4 @@
 let prev = document.getElementById('edit-preview');
-if (prev != null && prev != undefined) {
+if (prev != NULL && prev != undefined) {
   prev.classList.add('button');
 }
diff --git a/js/job_form.js b/js/job_form.js
index a01c75c..313464e 100644
--- a/js/job_form.js
+++ b/js/job_form.js
@@ -25,13 +25,14 @@ function onContentTypeChange(obj) {
 }
 function onDateChage(obj) {
     if (obj.value) {
-        if (obj.value == null || obj.value == '') return;
+        if (obj.value == NULL || obj.value == '') { return;
+        }
         let date = new Date(obj.value);
         let dayOfWeek = date.getDay();
         let isWeekend = (dayOfWeek === 6) || (dayOfWeek === 0);
-        if (isWeekend == true) {
-            obj.value = null;
+        if (isWeekend == TRUE) {
+            obj.value = NULL;
             alert("You cann't choose weekend ");
         }
     }
-}
\ No newline at end of file
+}
diff --git a/js/wordsonline-job.js b/js/wordsonline-job.js
index 6b91ddc..166710a 100644
--- a/js/wordsonline-job.js
+++ b/js/wordsonline-job.js
@@ -8,12 +8,12 @@ function CheckHasFile(isRefresh = false) {
   document.getElementById("wol-loader").style.display = "block";
   var url = root + "check-has-file";
   var request = new XMLHttpRequest()
-  request.open('POST', url, true)
+  request.open('POST', url, TRUE)
   request.onload = function () {
     // // Begin accessing JSON data here
     var data = JSON.parse(this.response);
-    if (data.status == "success" && data.changed == true) {
-      if (isRefresh == true) {
+    if (data.status == "success" && data.changed == TRUE) {
+      if (isRefresh == TRUE) {
         sessionStorage.setItem('wol-reload', '1');
         Refresh();
       }
@@ -28,7 +28,7 @@ function checkQuoted() {
   let page = document.getElementsByName("job_page");
   let name = document.getElementsByName("job_data");
   var params = getAllUrlParams(window.location.href);
-  var url = root + "check-quoted" + "?top=" + page[0].value;
+  var url = root + "check-quoted?top=" + page[0].value;
   if (params) {
     if (params.skip) {
       url = url + "&skip =" + params.skip;
@@ -39,16 +39,16 @@ function checkQuoted() {
 
   }
   let data = name[0].value;
-  if (data != null && data != '') {
+  if (data != NULL && data != '') {
     url = url + '&key=' + data;
   }
   document.getElementById("wol-loader").style.display = "block";
   var request = new XMLHttpRequest()
-  request.open('POST', url, true)
+  request.open('POST', url, TRUE)
   request.onload = function () {
     // // Begin accessing JSON data here
     var data = JSON.parse(this.response);
-    if (data.status == "success" && data.changed == true) {
+    if (data.status == "success" && data.changed == TRUE) {
       Refresh();
     }
 
@@ -60,10 +60,10 @@ setTimeout(() => {
   CheckHasFile();
 }, 5);
 function OnRefreshPage() {
-  CheckHasFile(true);
+  CheckHasFile(TRUE);
   var params = getAllUrlParams(window.location.href);
   let name = document.getElementsByName("job_data");
-  let oldSearch = null;
+  let oldSearch = NULL;
   if (params) {
     if (params.key) {
       oldSearch = params.key;
@@ -72,7 +72,7 @@ function OnRefreshPage() {
   }
   let data = name[0].value;
   if (data == '') {
-    data = null;
+    data = NULL;
   }
   if (oldSearch != data) {
     Refresh();
@@ -89,7 +89,7 @@ function reimport(job_id) {
   document.getElementById("wol-loader").style.display = "block";
   var url = root + "reimport?job_id=" + job_id;
   var request = new XMLHttpRequest()
-  request.open('POST', url, true)
+  request.open('POST', url, TRUE)
   request.onload = function () {
     // // Begin accessing JSON data here
     var data = JSON.parse(this.response)
@@ -114,7 +114,7 @@ function getQuote() {
 
     var url = root + "get-quote?job_id=" + job_id;
     var request = new XMLHttpRequest()
-    request.open('POST', url, true)
+    request.open('POST', url, TRUE)
     request.onload = function () {
       // Begin accessing JSON data here
       var data = JSON.parse(this.response)
@@ -161,7 +161,7 @@ function searchJob() {
   let page = document.getElementsByName("job_page");
   if (val) {
     let data = val[0].value;
-    if (data != null && data != '') {
+    if (data != NULL && data != '') {
       url = url + '?key=' + data;
       if (page) {
         url = url + "&top=" + page[0].value;
@@ -177,7 +177,6 @@ function searchJob() {
     }
   }
 
-
   location.href = url;
 }
 function goPage(num) {
@@ -243,18 +242,20 @@ function getAllUrlParams(url) {
 
       // set parameter name and value (use 'true' if empty)
       var paramName = a[0];
-      var paramValue = typeof (a[1]) === 'undefined' ? true : a[1];
+      var paramValue = typeof (a[1]) === 'undefined' ? TRUE : a[1];
 
       // (optional) keep case consistent
       paramName = paramName.toLowerCase();
-      if (typeof paramValue === 'string') paramValue = paramValue.toLowerCase();
+      if (typeof paramValue === 'string') { paramValue = paramValue.toLowerCase();
+      }
 
       // if the paramName ends with square brackets, e.g. colors[] or colors[2]
       if (paramName.match(/\[(\d+)?\]$/)) {
 
         // create key if it doesn't exist
         var key = paramName.replace(/\[(\d+)?\]/, '');
-        if (!obj[key]) obj[key] = [];
+        if (!obj[key]) { obj[key] = [];
+        }
 
         // if it's an indexed array e.g. colors[2]
         if (paramName.match(/\[\d+\]$/)) {
@@ -308,7 +309,7 @@ function Refresh() {
 
   }
   let data = name[0].value;
-  if (data != null && data != '') {
+  if (data != NULL && data != '') {
     url = url + '&key=' + data;
   }
 
@@ -320,12 +321,13 @@ function Refresh() {
 }
 function onDateChage(obj, timezone) {
   if (obj.value) {
-    if (obj.value == null || obj.value == '') return;
+    if (obj.value == NULL || obj.value == '') { return;
+    }
     let date = new Date(obj.value);
     let dayOfWeek = date.getDay();
     let isWeekend = (dayOfWeek === 6) || (dayOfWeek === 0);
-    if (isWeekend == true) {
-      obj.value = null;
+    if (isWeekend == TRUE) {
+      obj.value = NULL;
       alert("You cann't choose weekend");
     }
   }
@@ -334,4 +336,4 @@ Array.from(document.querySelectorAll('.use-ajax')).forEach(e => e.addEventListen
   var url = e.currentTarget.getAttribute("href");
   Drupal.ajax({ url: url }).execute();
   e.preventDefault();
-}))
\ No newline at end of file
+}))
diff --git a/js/wordsonline.js b/js/wordsonline.js
index 4814d60..c3eeb64 100644
--- a/js/wordsonline.js
+++ b/js/wordsonline.js
@@ -1,4 +1,3 @@
-
 var root = window.location.origin + window.location.pathname.replace('wordsonline/jobs', 'wordsonline/').replace('wordsonline/wol-order', 'wordsonline/')
 
 function downloadxlf() {
diff --git a/src/WordsOnlineTranslatorUi.php b/src/WordsOnlineTranslatorUi.php
index a372fb9..4838d8b 100644
--- a/src/WordsOnlineTranslatorUi.php
+++ b/src/WordsOnlineTranslatorUi.php
@@ -284,10 +284,10 @@ class WordsOnlineTranslatorUi extends TranslatorPluginUiBase {
       '#required' => TRUE,
       '#default_value' => $this->defaultServiceLevel,
       '#options' => [
-        "Basic" => "Basic",
-        "Standard" => "Standard",
-        "Enterprise" => "Enterprise",
-        "Premium" => "Premium",
+        "Basic" => $this->t("Basic"),
+        "Standard" => $this->t("Standard"),
+        "Enterprise" => $this->t("Enterprise"),
+        "Premium" => $this->t("Premium"),
       ],
       '#prefix' => '<div class="wol-text-field" id="service_level_wrapper">',
       '#suffix' => '</div>',