Examine source code of IsraBlock

{
  "applications": {
    "gecko": {
      "id": "israblock@israblock.com"
    }
  },
  "author": "Aviad Tobaly",
  "background": {
    "scripts": [
      "ibre/ibre.js",
      "ibrules.js",
      "background/background.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icon128.png",
    "default_title": "IsraBlock",
    "default_popup": "options/options.html"
  },
  "content_scripts": [
    {
      "js": [
        "ibre/common.js",
        "ibre/ibre.js",
        "ibrules.js",
        "israBlockStart.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "ibre/common.js",
        "ibre/ibre.js",
        "israBlockEnd.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_end"
    },
    {
      "js": [
        "ibre/common.js",
        "ibre/ibre.js",
        "israBlockIdle.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle"
    }
  ],
  "description": "A blocker for AdBlock blockers!",
  "icons": {
    "128": "icon128.png"
  },
  "manifest_version": 2,
  "name": "IsraBlock",
  "version": "0.0.31resigned1"
}