dropdown menu

Hejsa..
Har lavet en dropdown menu som ser sådan her ud..

<select name="select" onChange="if(this.value != 'v' && document.location != this.value){document.location=this.value}else{this.value='v'}" onmouseover="this.value='v'" style="width:110;background-color:#abcdef;color:#000000;" target="_new">
<option value="v" selected>Venner</option>
<?
include("http://net-town.be/checkban.php");
include("../../password.php");
  $rew_rum = mysql_query("SELECT * FROM users WHERE(username='$username')");
  $row_rum = mysql_fetch_array($rew_rum);
  $output = "<table width=\"200\"><form name=\"form\">";
  $select_newest_users = mysql_query("SELECT * FROM venneliste WHERE(username='$row_rum[username]') ORDER BY ven DESC") or die('Query failed: ' . mysql_error());
  while($row_newest_users = mysql_fetch_array($select_newest_users)) {
    echo "<option value=\"v\" target=\"_new\">$row_newest_users[ven]</option><br>";
  }

  echo "";


?>

men vil ha den til at åbne ned i et iframe når man trykker på den ven..
Håber i kan hjælpe mig
Tak :)