a problem to integrate the javascript FCKeditor ?

Hi friends,

Itried for several time to integrate FCK editor in my web page using javascript as it is chown at hearhttp://docs.fckeditor.net/FCKeditor_2.x/Developers_Guide/Integration/JavaScript ,but whenever i tried,i get this message:
" La ressource demandée (/fckeditor/editor/fckeditor.html) n'est pas disponible." and
"Etat HTTP 404 - /fckeditor/editor/fckeditor.html".

Thank you very much for your help