(function() {
  var bbid = 23535;
  var placeholder = "nb_gridwidget";
  var width = "960px";
  var height = "480px";
  var div = document.getElementById(placeholder);
  var iframe = document.createElement("iframe");
  iframe.setAttribute("src", "https://www.nightsbridge.co.za/bridge/view?gridwidget=2&bbid=23535");
  iframe.style.width = width;
  iframe.style.height = height;
  iframe.style.border = "none";
  div.appendChild(iframe);
})();