Examine source code of Tselios.Com-Button-Links

{
  "description": "Button with links for my sites",
  "manifest_version": 2,
  "name": "Tselios.Com-Button-Links",
  "version": "1.2resigned1",
  "background": {
    "scripts": [
      "pages_button.js"
    ]
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/tselios-32.png",
      "48": "icons/tselios-48.png"
    },
    "default_title": "Tselios.Com",
    "default_popup": "pages.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9284b2ab-0b98-439c-b3d6-f5b113ba8479}"
    }
  }
}