How to generate OpenOffice code with WYSIWYG online editor

I'm looking for a way to use/implement/set up a WYSIWYG online editor that generates sxw or odt code when saved.

Only basic features are needed, like font size, bold, italic, underline, ordered and unordered lists.

As far as I can guess, the best solution would be if an HTML editor would allow custom namespacing, thus I could generate the tags I need instead of HTML.

Does anyone have experience with such a solution?

u can use http://code.google.com/p/jodconverter/ to convert from html to odt . We use it on several projects.

thats a java converter