All this does is generate XHTML from the DOM, but might as well jam your ass bad HTML into the browser and start converting from there, right?
Oooo, XHTML *drool*
HTML2XHTML JavaScript Converter (H2X) generates a well-formed XHTML string from an HTML DOM object.
H2X could be used in Content Management Systems (CMS), online wysiwyg html editors or any other javascript application to produce well-formed XHTML 1.0 code.