Virtual Math Keyboard

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Virtual Math Keyboard",
  "description": "On-screen virtual math keyboard",
  "manifest_version": 2,
  "version": "1.01",
  "icons": {
    "16": "keyboard.png",
    "48": "keyboard.png",
    "128": "keyboard.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "options.html",
  "page_action": {
    "default_icon": "buttons/keyboard_0.png",
    "default_title": "Virtual Keyboard Toggle",
    "default_popup": "toggle.html"
  },
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "keyboard.html",
    "keyboard_*.html",
    "style.css",
    "options/*",
    "toggle.html",
    "toggle.js",
    "icons/*",
    "icons/backspace.png",
    "icons/backspace-e.png",
    "icons/close.png",
    "icons/enter.png",
    "icons/enter-e.png",
    "icons/settings.png",
    "icons/shift.png",
    "buttons/*"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ]
}