Examine source code of GHXplus

{
  "manifest_version": 2,
  "name": "GHXplus",
  "version": "1.0",
  "description": "Enhance the GHX interface.",
  "icons": {
    "64": "icons/icon-64.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wertyseek2@gmail.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://ebsnl.ghxeurope.com/synqeps/webroot/data/nw_searchOrder.cfm",
        "https://ebsnl.ghxeurope.com/synqeps/webroot/data/nw_createReq.cfm?orderID=&orderType=REQ"
      ],
      "js": [
        "searchpage.js"
      ]
    }
  ]
}