Just help me

hello,
Sorry for my bad english, I'm French and I'll try to summerize my problem
I'm not an expert with ckeditor; and I want to update the editor of my website, so I change it with ckeditor I read all the infomation on it, the editor is OK with writting, but it don't work when I upload photos or links, my browser blocks, am I clear enough?

I just send a part of my page, peruhups can you see where is my mistake
Thanks for your help,
Bernard

<?php
is_admin();

// Confiruration du HTMLArea
if (@$_GET['action']=="ajouter" || @$_GET['action']=="editer") {
   
   $header='<script type="text/javascript" src="include/ckeditor/ckeditor.js"></script><script type="text/javascript" src="/ckfinder/ckfinder.js"></script>';
}

switch (@$_GET['action']) {
default:

   
   $topic="Administration des Articles";
   $contenu="Administration des articles :<br><br>
            <a href='?page=admin/articles&action=ajouter' class='nobord'><div class='admin_mbre_lien'>Ajouter un article</div></a>
            <a href='?page=admin/articles&action=gerer' class='nobord'><div class='admin_mbre_lien'>Gérer un article</div></a>";
   design();
   
break;
##########################################################################################
##########################################################################################
case "ajouter":
   $topic="Ajouter un article :";

   
         if (isset($_SESSION['message'])) {
               $contenu.= "<font color=red><center>".stripslashes($_SESSION['message'])."</center></font>";
            unset($_SESSION['message']);
        } 

$contenu.='<br><form name="form1" method="post" action="?page=admin/articles&action=ajouter2">
  <div class="edit_news"><p>Sujet de l\'article : <br>
  <input name="sujet" type="text" id="sujet" size="40" maxlength="255" value="'.$_SESSION['temp_sujet'].'" class="sujet_news" onMouseOver="this.style.border=\'1px solid #000000\'; this.style.borderLeft=\'4px solid #0073FF\'" onMouseOut="this.style.border=\'1px solid #666666\'; this.style.borderLeft=\'4px solid #0053B8\'"></p>
  Texte de l\'article :<br>
<center><textarea id="MyTextarea" class="ckeditor" name="texte"> 
<script type="text/javascript" src="/ckeditor/ckeditor.js"></script>'.$_SESSION['temp_texte'].'</textarea></center>
  <p><input type="submit" name="Submit" value="&nbsp;&nbsp;Valider&nbsp;&nbsp;" class="input_inscript" onMouseOver="this.style.border=\'1px solid #000000\'; this.style.borderLeft=\'4px solid #0073FF\'" onMouseOut="this.style.border=\'1px solid #666666\'; this.style.borderLeft=\'4px solid #0053B8\'"> </p></div>
</form><br><center>- <a href="?page=admin/articles">Retour à l\'administration des Articles</a> -</center><br><br>';
   
   unset ($_SESSION['temp_sujet']); unset ($_SESSION['temp_texte']);

   design();

break;
##########################################################################################
##########################################################################################
case "ajouter2":

      if (empty($_POST['sujet']) || empty($_POST['texte'])) {
            @$_SESSION['message'] .= ">> Les champs Sujet et/ou Texte n'ont pas été renseignés.<br>";
            @$erreur++; }   
          
      if (@$erreur != 0) { 
         $_SESSION['temp_sujet']=$_POST['sujet'];
         $_SESSION['temp_texte']=$_POST['texte'];
            rediriger("?page=admin/articles&action=ajouter"); } 
      else {
         $sujet=addslashes($_POST['sujet']);       $texte=addslashes($_POST['texte']); 
         $idaut=$_SESSION['sess_id'];     $date = date("Y-m-d");

            $sql = mysql_query("INSERT INTO articles ( `sujet` ,  `texte` , `date`, `auteur`) VALUES ('$sujet','$texte','$date','$idaut')");
         rediriger("?page=admin/articles"); 
      }
break;