Setting a value for CFTEXTAREA (richtext) via Javascript

Is anyone really familiar with the way CF8 implements FCK? I'm trying to set the innerHTML value for a richtext field via javascript, and am having no luck finding the property. CF8 provides a nifty ColdFusion.getElementValue() function, but no setElementValue function . I'm able to get the ID of the field (document.MyFormName.MyFormField.id) but am not aware of a way to dup out the properties of the object. I'd prefer not to have to go through the trouble of binding, and just set it directly in my JS function. Any help here is appreciated.