document.getElementById("pdfInput").addEventListener("change", function(event) {
    handleFileSelection(event);
    });

    document.getElementById("pdfInputQR").addEventListener("change", function(event) {
    handleFileSelection(event);
    });

    function handleFileSelection(event) {
    const file = event.target.files[0];
    if (file) {
        const fileURL = URL.createObjectURL(file);
        loadPDF(fileURL);
    }
    }

    function loadPDF(pdfURL) {
    const previewFrame = document.getElementById("previewFrame");
    previewFrame.src = pdfURL;
    previewFrame.style.display = "block"; // Muestra el iframe cuando se carga el PDF
    }