Replacing all existing textareas - without ID

Hello,

I am using a content management system which I do not want to change, so I want to cover all changes in the html templates.

The textarea attributes are rendered by the CMS, so I don't want to change them, therefore I just want to replace all existing textareas with FCKeditor-textareas.

This method is of course described in the docs, but you have to add an id to each textbox:

<textarea id="MyTextarea" name="MyTextarea">This is <b>the</b> initial value.</textarea>

How can I achieve the same effect without having to add an id= and keep the existing "name="?

Thanks!