input type="hidden" id="body___Config"

I'm using fckeditor\fckeditor.cfc and it works great, except for this:

Rendered source code is:

<input type="hidden" id="body" name="body" value="" style="display:none" />
<input type="hidden" id="body___Config" value="" style="display:none" />
<iframe id="body___Frame" src="../../fckeditor/editor/fckeditor.html?InstanceName=body&amp;Toolbar=Default" width="900" height="500" frameborder="0" scrolling="no"></iframe>