function checkform ( form )
{
  // ** 
  if (form.name.value == "") {
    alert( "Please enter your name." );
    form.name.focus();
    return false ;
  }
  if (form.email.value == "") {
    alert( "Please enter your valid e-mail address or contact phone number." );
    form.email.focus();
    return false ;
  }
    if (form.message.value == "") {
    alert( "Please specify your request" );
    form.message.focus();
    return false ;
  }

  // ** 
  return true ;
}