{
  "prefbar:info": {
    "formatversion": 3
  },
  "prefbar:menu:enabled": {
    "items": [
      "prefbar:button:profilemgr"
    ]
  },
  "prefbar:button:profilemgr": {
    "type": "button",
    "label": "Profiles",
    "onclick": "if (\"toProfileManager\" in window)\n  toProfileManager();\nelse\n  alert(\"This button is not supported in your browser\");"
  }
}