function showSubjectId() {
    const subjectId = getParameterByName('subjectId');
    console.log("Extracted subjectId: ", subjectId); // Add this line
    if (!subjectId) {
        console.error("No subjectId found in URL");
        return;
    }
    const ids = generateUserId(subjectId);
    userId = ids.userId;
    groupId = ids.groupId;
    document.getElementById('member_id_display').innerText = "Your member ID is " + userId + " (Group " + groupId + ")";
    initializeChat(); // Call to initialize chat with user ID
}