Misery of the Content Editor Web Part

a) It is only compatible with IE no FireFox, Safari.
b) Management of hyperlink is messy (and IE make it worse read and read)

Decided to move to TinyMCE
a) How to install in sharepoint
- another version of the script
b) How to manipulate with Jquery
c) How to copy/paste from Word

Or Maybe
Webpart with FCKEditor (not tested)
Fixing Absolute URL (no tested)
Telerik WebPart (not tested too expensive for me )

Understanding Absolute and Relative URL Addresses

- MSDN Understanding Absolute and Relative URL Addresses

tinymce

Rich Text Editor tinymce

Try JPoint

Cool Jquery for SharePoint