diff --git a/js/pjw-core.js b/js/pjw-core.js
index d8a67da..72f8954 100644
--- a/js/pjw-core.js
+++ b/js/pjw-core.js
@@ -1,40 +1,3 @@
-var modes_reg = {
-  course: /grablessons.do/i, // 选课系统列表
-  xk_system: /\/\/xk.nju.edu.cn/i, // 选课系统 xk.nju.edu.cn 界面
-
-  major_course: /student\/elective\/specialityCourseList.do/i, // 专业选课
-  union: /student\/elective\/index.do/i, // 选课
-  gym: /gymClassList.do/i, // 体育补选
-  read: /readRenewCourseList.do/i, // 经典导读读书班补选
-  dis: /discussRenewCourseList/i, // 导学、研讨、通识课补选
-  public: /publicRenewCourseList/i, // 公选课补选
-  open: /openRenewCourse/i, // 跨专业补选
-  art: /artRenewCourseList/i, // 美育补选
-  common: /commonCourseRenewList|commonRenew.do/i, // 通修课补选
-
-  read_view: /elective\/readCourseList.do/i, // 经典导读读书班初选
-  dis_view: /elective\/freshman_discuss.do/i, // 导学、研讨、通识课初选
-  art_view: /elective\/artList.do/i, // 美育初选
-  public_view: /elective\/publicCourseList.do/i, // 公选课初选
-  open_view: /elective\/open.do/i, // 跨专业初选
-
-  course_eval: /evalcourse\/courseEval.do\?method=currentEvalCourse/i, // 课程评估
-
-  all_course_list: /teachinginfo\/allCourseList.do\?method=getTermAcademy/i, // 全校课程
-  grade_info: /student\/studentinfo\/achievementinfo.do\?method=searchTermList/i, // 成绩查看
-  course_info: /courseList.do\?method=getCourseInfoM/i, // 课程详细信息
-
-  main_page: /(\/jiaowu\/student\/index.do|\/jiaowu\/login.do)/i, // 主页
-  login_page: /(\/jiaowu\/exit.do|\/jiaowu$|\/jiaowu\/$|\/jiaowu\/index.jsp)/i // 登录页
-}
-window.pjw_mode = "";
-for (const mode_name in modes_reg) {
-  if (modes_reg[mode_name].test(window.location.href) == true) {
-    window.pjw_mode = mode_name;
-    break;
-  }
-}
-
 window.potatojw_intl = function() {
   if (typeof(window.pjw_version) == "string") return;
 
diff --git a/manifest-v2.json b/manifest-v2.json
new file mode 100644
index 0000000..911f473
--- /dev/null
+++ b/manifest-v2.json
@@ -0,0 +1,29 @@
+{
+  "manifest_version": 2,
+  "name": "PotatoPlus",
+  "version": "0.3.4",
+  "description": "Potato Overflow! NJU土豆改善工程",
+  "icons": {
+    "96": "img/logo96.png",
+    "128": "img/logo128.png",
+    "512": "img/logo512.png",
+    "1024": "img/logo1024.png"
+  },
+  "author": "Limos",
+  "content_scripts": [
+    {
+      "matches": ["*://*.nju.edu.cn/jiaowu*", "*://xk.nju.edu.cn/*"],
+      "css": ["css/material-components-web.min.css", "css/pjw.css", "css/pjw-classlist.css", "css/pjw-filter.css", "css/pjw-console.css"],
+      "js": ["js/inject.js"],
+      "run_at": "document_start",
+      "all_frames": true
+    }
+  ],
+  "web_accessible_resources": ["js/*","css/*","fonts/*"],
+  "browser_specific_settings": {
+    "gecko": {
+      "update_url": "https://github.com/cubiccm/potatoplus/releases/latest/download/updates.json"
+    }
+  }
+}
+