Examine source code of Advanced Book

{
  "manifest_version": 2,
  "name": "NWUjs",
  "description": "The Ultimate Framework to Enhance your Experience",
  "version": "0.0.2resigned1",
  "icons": {
    "48": "img/nwu-48.png",
    "96": "img/nwu-96.png",
    "128": "img/nwu-128.png"
  },
  "browser_action": {
    "default_icon": "img/nwu-48.png",
    "default_popup": "popup.html",
    "default_title": "NWUjs Framework"
  },
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "https://www.nationstates.net/*/detail=factbook/id=*"
      ],
      "js": [
        "lib/jquery.js",
        "modules/pretifier.js"
      ],
      "css": [
        "css/pretifier/pretifier.css",
        "css/pretifier/components/factbook.css",
        "css/pretifier/components/header.css",
        "css/pretifier/components/footer.css"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c4f6b5ac-d4ec-49d5-aa04-e52ad0dad700}"
    }
  }
}