function validateContact(form)
{
  if (form.name.value == "") {
    alert( "Please enter your Name." );
    form.name.focus();
    return false ;
  } else {
    if (form.email.value == "") {
      alert( "Please enter your Email Address." );
      form.email.focus();
      return false ;
    } else {
      if (form.telephone.value == "") {
        alert( "Please enter your Phone Number." );
        form.telephone.focus();
        return false ;
      } else {
        if (form.query.value == "") {
          alert( "Please enter your Comment or Query." );
          form.query.focus();
          return false ;
        }
      }
    }
  }
}