problem with the fckeditor , help please .

$oFCKeditor = new FCKeditor ("world") ;

this code will create code of

<input type="hidden" style="display: none;" value="" name="art" id="art"/>
<input type="hidden" style="display: none;" value="" id="art___Config"/>

but you have aleady writed
<p><textarea rows="15" name="world" cols="56"></textarea></p>

it's the error . maybe..
you can try it