function populateTo(f) {

  if (f.elements[5].value.length < 1)
  {
    alert("First Name is Mandatory");
    return false;
  }
  if (f.elements[6].value.length < 1)
  {
    alert("Last Name is Mandatory");
    return false;
  }
  if (f.elements[7].value.length < 1)
  {
    alert("Email Address is Mandatory");
    return false;
  }
  
  if (f.elements[8].value.length < 1)
  {
    alert("Subject is Mandatory");
    return false;
  }
  else
  {
    f.elements[8].value = "[portal] " + f.elements[8].value;
  }
  
    return true;
  }