Nick,
TinyMCE: http://tinymce.moxiecode.com/
V/r Anthony
Actually, HTMLArea is pure javascript. The original developer stopped maintaining it, but another picked it up and renamed it XINHA (Xinha Is Not HTMLArea) and continues maintaining it. Xinha is available at
To add to what the others have mentioned, the dojo toolkit includes a simple editor as well (www.dojotoolkit.org).
- Mark.