Examine source code of Hover Activated Buttons

{
  "manifest_version": 2,
  "name": "Hover Activated Buttons",
  "version": "1.0",
  "description": "No clicking needed, just hover to activate.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Hover Activated Buttons",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f4366295-cb61-443b-8cf1-0c3706b9beda}"
    }
  }
}