Adding CKEDITOR in MATE

// Add following in Javascript section.
    function addCkEditor(id)
    {
        if(CKEDITOR.instances[id])
        {
        CKEDITOR.remove(CKEDITOR.instances[id]);
        }
        CKEDITOR.replace(id);
    }

// Use following function
public function addCkEditor()
{
  $this->Editor->addJavascript('addCkEditor("'.$this->mateInstances[0].'notes");');
}

// define, when to use this CKEditor.
$this->Editor->setConfig('addScreenFun',array(&$this,'addCkEditor'));
$this->Editor->setConfig('editScreenFun',array(&$this,'addCkEditor'));