felj i php kode

Parse error: syntax error, unexpected T_STRING, expecting ',' or ';' in c:\AppServ\www\new gongo\PhP\menu.php on line 23

<link href="css.css" rel="stylesheet" type="text/css" />

<script type="text/javascript">
oldElm = null //menuen er skjult

function visMenu(objekt){
    if (oldElm)
        oldElm.display = "none";
    oldElm = document.getElementById(objekt).style;
    oldElm.display = "block";
}
</script>


<?



$foresp = mysql_query("SELECT * FROM menu_nyheder WHERE menu_id = '2'  ORDER BY nr ASC ") or die (mysql_error());
while($row = mysql_fetch_array($foresp)) {
?><div id="topmenu1"><?

echo "<a class="navigation" href="java script:visMenu('menu1');">";
echo $row['navn'];
echo "</a>";
}

?>

<div id="menu1">
    <div><a class="navigation" href="blank0.php">Introduktion</a></div>
    <div><a class="navigation" href="blank0.php">Indre planeter</a></div>
    <div><a class="navigation" href="blank0.php">Asteroiderne</a></div>
    <div><a class="navigation" href="blank0.php">Ydre planeter</a></div>
    <div><a class="navigation" href="blank0.php">Kometskyen</a></div>
</div>
</div>

----------
echo "<a class="navigation" href="java script:visMenu('menu1');">";
ville jeg tro