Loginsystem, simpelt

Nogen der kan fortælle mig hvad jeg gør galt.. ?! :S

<?PHP
 
global $nameinput;
require("config.inc.php");

$conn = mysql_connect($mysql_host, $mysql_user, $mysql_password);
$db = mysql_select_db($mysql_db, $conn);
$sql = "SELECT * FROM member WHERE nick ='$nameinput'";


echo "";

if ($func == "") {

echo "
<CENTER>
            <FORM action=index.php?page=login&func=login
            method=post>
            <TABLE cellSpacing=0 cellPadding=0 align=top width=0>
              <TBODY>
              <TR>
                <TD width=0 height=10>
                  <P align=left><INPUT class=box size=10 value=Nick name=nameinput></P></TD></TR>
              <TR>
                <TD width=0 height=10>
                  <P align=left><INPUT class=box size=10 value=Password name=passinput></P></TD></TR>
              <TR>
                <TD width=0 height=10>
                  <P><INPUT class=box type=hidden value=login name=func><INPUT class=box type=submit value=OK></P></TD>
                <TD width=0 height=10>
                  <P align=left></P></TD></TR></TBODY></TABLE>
            <P align=center></P></FORM></CENTER>";
}

elseif ($func == "login") {

$result = mysql_query($sql, $conn);

$table = mysql_fetch_array($result, MYSQL_ASSOC);

$pass = base64_decode($table["pass"]);

if($nameinput == $table["nick"] && $passinput == $pass && !empty($nameinput) && !empty($passinput))
{
$result = mysql_query($sql, $conn);
$table = mysql_fetch_array($result, MYSQL_ASSOC);

$usera = $table["nick"];
$login_user = $usera;
session_register ('login_user');

$passa = $table["pass"];
$login_pass = $passa;
session_register ('login_pass');

echo "</font><p align=center><a href=index.php><font face=Verdana color=#FFFFFF size=\"1\">Logged in</font></a></p><font color=\"#FFFFFF\" size=\"1\" face=\"Verdana\">";

echo "
<script language=\"JavaScript\">
url=(\"index.php\");
window.location=url
</script>
";

}
else
{
echo "<p align=center><a href=index.php?page=login><font face=Verdana size=2>Wrong nick or password</font></a></p>";
}
}



mysql_close($conn);



?>