function setAttendees(num) {
    var myForm  = document.getElementById('reg');
    var ps      = document.getElementsByTagName("p");
    var attendees = new Array();
    var j       = 0;
    for (i=0;i<ps.length;i++){
        var p = ps[i];
        if (p.className == 'attendee') {
            attendees[j++] = p;
        }
    }
    for (i=0;i<attendees.length;i++) {
        if (i<num-1) {
            attendees[i].style.display = "";
        } else {
            attendees[i].style.display = "none";
        }
    }
}

function setTicket(ticket) {
    var myForm  = document.getElementById('reg');
    var ps      = document.getElementsByTagName("p");
    for (i=0;i<ps.length;i++){
        var p = ps[i];
        if (p.className == 'car') {
            if (ticket == 'S') {
                p.style.display = "none";
            } else {
                p.style.display = "";
            }
        }
    }
}