function completeRegistrationEvent() {
  fbq('track', 'CompleteRegistration');
  console.log("CompleteRegistration event fired");
}

function updateFacebookPixel(pixelId) {
  // Remove any existing pixel script and noscript to avoid duplicates
  const existingScript = document.getElementById("fbPixel");
  const existingNoscript = document.getElementById("fbPixelNoscript");
  if (existingScript) existingScript.remove();
  if (existingNoscript) existingNoscript.remove();

  // Dynamically create and inject the Facebook Pixel script with the provided pixel ID
  var fbPixelScript = document.createElement("script");
  fbPixelScript.id = "fbPixel";
  fbPixelScript.innerHTML = `
    !(function (f, b, e, v, n, t, s) {
      if (f.fbq) return;
      n = f.fbq = function () {
        n.callMethod
          ? n.callMethod.apply(n, arguments)
          : n.queue.push(arguments);
      };
      if (!f._fbq) f._fbq = n;
      n.push = n;
      n.loaded = !0;
      n.version = "2.0";
      n.queue = [];
      t = b.createElement(e);
      t.async = !0;
      t.src = v;
      s = b.getElementsByTagName(e)[0];
      s.parentNode.insertBefore(t, s);
    })(window, document, "script", "https://connect.facebook.net/en_US/fbevents.js");
    fbq("init", "${pixelId}");
    fbq("track", "PageView");
  `;
  document.head.appendChild(fbPixelScript);

  // Create noscript fallback
  var fbPixelNoscript = document.createElement("noscript");
  fbPixelNoscript.id = "fbPixelNoscript";
  fbPixelNoscript.innerHTML = `
    <img height="1" width="1" style="display:none"
         src="https://www.facebook.com/tr?id=${pixelId}&ev=PageView&noscript=1" />
  `;
  document.head.appendChild(fbPixelNoscript);
}