Rich Text Editor WYSIWYG with Javascript

Looking for a simple way to format source code in the blog, i remembered that it exists a wonderful and useful Rich Text editor in Javascript, it's called TinyMCE, and the best is that is licensed under a Free Software License (LGPL). To see how it works you can visit http://tinymce.moxiecode.com. I have also found a tool to do the same and a little bit faster.