Is there any browser based XHTML editor which we can use to make text to xhtml conversion?

Is there any browser based XHTML editor which we can use to make text to xhtml conversion?

If PC dosen't have any I开发者_开发知识库DE or tool other than Notepad and we can't install anything on PC due to restrictions.

Then what is fast and good way to make .txt or word 2007 document to clean valid xhtml code?

not sure if this is what you are looking for .. but you can take a look at

1. tinyMCE
2. CKEdtior