Removing the editor

Hi!

How can I remove a instance of the fckeditor?

I create the fckeditor with ReplaceTextarea(), and then I have a save function in which I want to remove the loaded fck editor. Now I basically just do this: editorcontainer.innerHTML = '';

But apparently that's not enough, because when I try to recreate the editor with ReplaceTextarea() I get an error message in the console:
FCK is not defined (line 88 in fckeditorcode_gecko.js). And then the toolbar doesn't redraw etc.

Please help