document.getElementById("trackingForm").addEventListener("submit", function (e) { e.preventDefault(); const carrier = document.getElementById("carrier").value; const trackingNumber = document.getElementById("trackingNumber").value.trim(); if (!trackingNumber) { alert("Proszę wpisać numer paczki."); return; } let trackingURL = ""; if (carrier === "dhl") { trackingURL = `https://www.dhl.com/pl-pl/home/tracking/tracking-parcel.html?submit=1&tracking-id=${trackingNumber}`; } else if (carrier === "inpost") { trackingURL = `https://inpost.pl/sledzenie-przesylek?number=${trackingNumber}`; } // Otwiera stronę śledzenia w nowej karcie window.open(trackingURL, "_blank"); });