Error with display:none

Hello, I am using the PHP version of the editor, putting the textarea in a DIV with display:none

<DIV ID="not1" STYLE="display:none ">

<?
$oFCKeditor = new FCKeditor('notizia'.$IDnot) ;
$oFCKeditor->Value        = $row_not["testo"] ;
$oFCKeditor->Create() ;
?>