essaye plutot ceci :
[html] {L_ADDED}
<table class="c_est_le_texte">
{PREVIEW}
<tr>
<td align="center">
<form name="edit" method="POST" action="index.php?id=add_page" language="javascript" onsubmit="updateRTE('rte1'); document.edit.contenu.value = document.edit.rte1.value ;" id="edit">
<input type="hidden" name="result" value='{L_DEFAULT}' id="result" />
{L_TITRE}: <input name="titre" value="{TITRE}" /><br /><hr /><br />
<script language="JavaScript" type="text/javascript" src="richtext.js"></script>
<script>
writeRichText('rte1', '{L_DEFAULT}',700,400, true);
</script>
<noscript><p><b>{L_NEED_JS}</b></p></noscript><br />{L_HIDDEN} <input type="checkbox" name="hidden" value="1" />
</td></tr>
<tr>
<td align="center"><input type="submit" value="{L_SUBMIT}" /> .:. <input name="preview" type="submit" value="{L_PREVIEW}" /></form></td>
</tr>
</table>
[/html]
pas sur que cela marche...
difficile de t'aider tu sais