Examine source code of gtct

{
  "manifest_version": 2,
  "name": "GTCT",
  "version": "1.0.0.5",
  "description": "Google Translator Customization Tool",
  "homepage_url": "http://yastoroon.ir/the-gtct-firefox-addon/",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "applications": {
    "gecko": {
      "id": "1141dbdb434f00f95aaf72a740078a391e9034c2@temporary-addon"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://translate.google.com/*"
      ],
      "js": [
        "gtct.js"
      ]
    }
  ]
}