Código HTML:
javascript:FAjax('a.php','contenido','titulo='+document.getElementById('titulo').value,'post')
el fck lo declaro en php:
Código PHP:
$oFCKeditor = new FCKeditor('FCKeditor1') ;
$oFCKeditor->BasePath = '/FCKeditor/';
$oFCKeditor->Value = html_entity_decode(stripslashes($copete));
$oFCKeditor->Width = '450' ;
$oFCKeditor->Height = '250' ;
$oFCKeditor->Border = '0' ;
$oFCKeditor->Create() ;