О! Вот достойная реализация среди прочих!

http://www.solmetra.com/en/disp.php...w/en_spaw_about

SPAW Editor is a web based WYSIWYG editor control enabling web site developers to replace a standard textarea html control with full-featured, fully customizable, multilanguage, skinable web based WYSIWYG editor.
[SMALL]Features included in this release:

Basic text editor features (cut, copy, paste, undo, redo);
Basic formatting features (bold, italic, underline, fore color, background color, fonts, etc.);
Management of HTML objects (images, links, tables, etc.);
Applying CSS classes to text and objects;
Advanced image manipulation - image library sub-control (upload, preview and select images);
Advanced table manipulation - create, modify attributes of table and cells, insert/delete rows and columns, merge/split cells (including unique vertical merging feature!!!);
Support for themes (skins) - 4 ready to use themes included;
Fully customizable toolbars - 4 presets included;
Multilanguage support - English, Lithuanian, Russian, German, Dutch, Italian, French, Hebrew, Turkish, Chinese, Czech, Brazilian Portuguese new, Swedish new, Danish new and Hungarian new language files included;
Support for multiple fully independent instances of control on the same page (each instance can have different theme, toolbar, language, style classes, etc.);
HTML code cleanup (useful for copy/pasting content from MS Word);
Optional design time borders on borderless tables;
Active toolbar reflecting applicable features and current style new;
Demo script showcasing the use of the control;
Basic documentation (this file). [/SMALL]

Песня!