if($top_ua<$ua){
$top3_ua = $top2_ua;
$nm3_ua = $nm2_ua;
$top2_ua = $top_ua; $nm2_ua = $nm_ua;
$top_ua = $ua;
$nm_ua = $nm;
}elsif($top2_ua<$ua && $nm_ua ne $nm){
$top3_ua = $top2_ua;
$nm3_ua = $nm2_ua;
$top2_ua = $ua; $nm2_ua = $nm;
$top3_ua = $ua; $nm3_ua = $nm;