[Parse error ]in my code help needed

[Almax1]

Parse error: parse error in /xxx/xxx/xxx/topp.php on line 17

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PHP Code:

<?php


require("admin/config.php");
$db=mysql_connect($servername,$dbusername,$dbpassword) or die("Unable to connect to database");
mysql_select_db($dbname) or die("Unable to select database $dbname");


$postsresult = mysql_query("SELECT COUNT(*) AS count,postuserid,postusername FROM thread WHERE forumid IN (10,11) GROUP BY postuserid ORDER BY count DESC LIMIT $maxposters;") or die("Unable to complete query");
while ($topposters = mysql_fetch_array($postsresult)):
    if (($counter++ % 2) != 0) {
        $bc=$bc1;
    } else {
        $bc=$bc2;
}
eval("dooutput(\"".gettemplate("topp")."\");");
?>

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trying to display thread starters in 2 forums 10 & 11
in a template
a simple guideline would be great please