function ShowReg(op) {
  document.getElementById('Renewal').style.display='none';
  document.getElementById('Cancellation').style.display='none';
  document.getElementById('Standard').style.display='none';
  document.getElementById('Welcome').style.display='none';
  document.getElementById('Receipt').style.display='none';
  document.getElementById('Other').style.display='none';

  if (op == 1) {
    document.getElementById('Standard').style.display="block";
  }
  if (op == 2) {
    document.getElementById('Welcome').style.display="block";
  }
  if (op == 3) {
    document.getElementById('Renewal').style.display="block";
  }
  if (op == 4) {
    document.getElementById('Cancellation').style.display="block";
  }
  if (op == 5) {
    document.getElementById('Receipt').style.display="block";
  }
  if (op == 6) {
    document.getElementById('Other').style.display="block";
  }

}