function Validate() {
  formReference=Contact.Name.value;
  if (formReference=='') {
    alert('The "Name" field cannot be empty.');
    event.returnValue=false;
    Contact.Name.focus();
    return false;
  }
  
  formReference=Contact.Email.value;
  if (formReference=='') {
    alert('The "Email" field cannot be empty.');
    event.returnValue=false;
    Contact.Email.focus();
    return false;
  }
  
  formReference=Contact.Subject.value;
  if (formReference=='') {
    alert('The "Subject" field cannot be empty.');
    event.returnValue=false;
    Contact.Subject.focus();
    return false;
  }
  
  formReference=Contact.Message.value;
  if (formReference=='') {
    alert('The "Message" field cannot be empty.');
    event.returnValue=false;
    Contact.Message.focus();
    return false;
  }
}