Include af sider via $pageid

Hej.

Jeg har i min index.php denne kode:

    <?
        if($pageid == "1"){ include("forside.php");
        }
        else if($pageid == "2"){ include("side2.php");     
        }
            else if($pageid == "3"){ include("side3.php");     
        }
            else if($pageid == "4"){ include("side4.php");     
        }
        else if($pageid == "5"){ include("links.php");
        }
        else if($pageid == "6"){ include("links/add.php");
        }
            else if($pageid == "7"){ include("links/add-ok.php");     
        }
        else if($pageid == "8"){ include("onlinecounter/liste.php");
        }
                        else { include("forside.php");
        }
    ?>

I min links.php er følgende kode:
<p align="center">
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%" id="AutoNumber1">

    <tr>
        <td bgcolor="#7a9294" width="100%" colspan="3"><p align="center"><b>Links</b></p></td>
    </tr>
    <tr>
        <td width="3%"></td>
        <td width="94%">
<br>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%" id="AutoNumber1">
<tr>
<td>
<?
include("links/add.php");
?>
</td>
</tr>
</table><br>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="100%" id="AutoNumber1">
  <tr>
    <td bgcolor="#656565" width="100%">
    <p align="center"><font color="#FFFFFF"><b>Link Oversigt</b></font></td>
  </tr>

<?
require("config.php");
$query = mysql_query("SELECT url, beskrivelse, id FROM linkdatabase ORDER BY id, url, beskrivelse") or die(mysql_error());
while($row = mysql_fetch_assoc($query)) {
  echo"
  <tr>
    <td width=\"100%\"><p align=\"left\"><a href=\"http://".$row['url']."\"><b>".$row['url']. "</b></a><br>" .$row['beskrivelse']. "<br><a href=\"admin/link/admin_link.php?id=".$row['id']."\">Ret/Slet</a></p></td>
  </tr>
  ";
}
?>
</table>

</td>
        <td width="3%"></td>
    </tr>
</table>
</p>
<br>



Mit spørgsmål lyder så, hvordan får jeg linket <a href=\"admin/link/admin_link.php?id=".$row['id']."\">Ret/Slet</a> til at åbne som en side ligesom de andre i index.php ?