/**
  * Function to delete Individual Prefix
  * 
  * @param  int  $prefixId     ID of the prefix to be deleted.
  * 
  * @return boolean
  * 
  * @access public
  * @static
  */
 function del($prefixId)
 {
     require_once 'CRM/Contact/BAO/Individual.php';
     $ids = array('individualPrefix' => $prefixId);
     CRM_Contact_BAO_Individual::updateDisplayNames($ids, CRM_CORE_ACTION_DELETE);
     $prefix =& new CRM_Core_DAO_IndividualPrefix();
     $prefix->id = $prefixId;
     $prefix->delete();
     return true;
 }