function main() {
  new StreetViewImages({
      origin: document.getElementById("origin").value,
      destination: document.getElementById("destination").value,
      apiKey: document.getElementById("apiKey").value,
      onPanoLoaded: function (pano) {
          console.log(pano);
          document.body.appendChild(document.createElement("img"))
              .src = pano.panoUrl
      },
      onError: function (err) {
          console.log(err);
      },
      onComplete: function () {
          console.log("Done pulling images on route");
      }
  });
}