Examine source code of Elama Balance

{
  "manifest_version": 2,
  "name": "Elama Balance",
  "version": "1.0",
  "description": "Calculate your total balance through all accounts on the elama.ru website.",
  "icons": {
    "48": "elama.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.elama.ru/*"
      ],
      "js": [
        "elama.js"
      ]
    }
  ]
}