Erro no site

<?php
class db {
public static function Conect($servidor, $usuario, $senha, $db){
mysql_connect($servidor, $usuario, $senha);
mysql_select_db($db);
}
public static function Query($val){
return @mysql_query($val);
}
public static function FetchArray($val){
return @mysql_fetch_array($val);
}
public static function NumRows($val){
return @mysql_num_rows($val);
}
}
db::Conect('localhost','q25epuze_nb','nobfilmes1','q25epuze_nb');