besked system

PHP kode 

 $hent_mail = mysql_query("SELECT * FROM kontakt WHERE til = '".$_GET[id]."'") or die(mysql_error());
 $vis_mail = mysql_num_rows($hent_mail);
 
 if($vis_mail == 0)
 {
 echo "Du har ikke modtaget nogen mails endnu";
 } else {
 ?>
 <table cellpadding="0" cellspacing="0" width="530" border="0">
   <tr>
     <td width="40"><b>ID:</b></td>
     <td width="222"><b>Afsender:</b></td>
     <td width="119"><b>Dato:</b></td>
     <td width="26"><b>Slet:</b></td>
   </tr>
 
 
 
 <?php
 
 while($vis_mail = mysql_fetch_array($hent_mail))
 {
     
     $nummer++;
     
 
 if($skiftfarve == 0) {
 ?>
 
 <tr>
     <td style="background-color:#f9f9f9;"><?php echo $nummer; ?></td>
     <td style="background-color:#f9f9f9;"><a href="vis.mail.php?id=<?php echo $vis_mail[id] ?>"><?php echo $vis_mail['navn']; ?></a></td>
     <td style="background-color:#f9f9f9;"><?php echo $vis_mail['dato']; ?></td>
     <td style="background-color:#f9f9f9;"><a href="mail.inbakke.php?id=<?php echo $vis_mail[id] ?>">slet</a></td>
 </tr>
 
 <?php
 $skiftfarve = 1;
 } else {
 ?>
 
 <tr>
     <td style="background-color:#ffffff;"><?php echo $nummer; ?></td>
     <td style="background-color:#ffffff;"><a href="vis.mail.php?id=<?php echo $vis_mail[id] ?>"><?php echo $vis_mail['navn']; ?></a></td>
     <td style="background-color:#ffffff;"><?php echo $vis_mail['dato']; ?></td>
     <td style="background-color:#ffffff;"><a href="mail.inbakke.php?id=<?php echo $vis_mail[id] ?>">slet</a></td>
 </tr>
 
 <?php
 $skiftfarve = 0;
 }
 ?>
 
 
 <?php
 }#Lukker while
 }#lukker else
 ?>
 </table>
 <?php