Examine source code of CJ opener

{
  "manifest_version": 2,
  "name": "CJ Opener",
  "version": "2.1resigned1",
  "author": "exp131",
  "applications": {
    "gecko": {
      "id": "{0568EFC7-32DC-4f3e-B567-EC26E3B7888B}"
    }
  },
  "description": "Opens CJ links",
  "background": {
    "scripts": [
      "app.js"
    ]
  },
  "permissions": [
    "contextMenus",
    "tabs"
  ]
}