Running an sql query in a node produces "?" for ISO-8859-2 accented characters

Hello,

I run a simple sql query in a node:

$s ="SELECT `title`FROM `node`";
$events=mysql_query($s);
while ($line = @mysql_fetch_array($events, MYSQL_ASSOC)) 
  {
  foreach ($line as $col_value=> $value) 
     {
      $$col_value= $value;
     echo $col_value, ": ", $value, "<br><br>";
  }
}

echo "áéőóúűüöí";

The first echo which has the returned values from the query prints out question marks wherever
these characters are found "áéőóúűüöí".

The second echo prints out the charcaters just fine. If I run the same sql query in for example in phpmyadmin or other then drupal location then it prints out fine. At this point I dont see any solutions to this problem and I can not even think of anything what could cause this, unless there is a javascript or something that rewrites the result set returned from the query.
Please advise!
Best regards,
Gabor