✔ 最佳答案
You may download the following file:
http://rapidshare.com/files/44918580/htmlarea.zip.html
Extract all the files in the .zip files to the file of your web page.
Follow the procedure in this web page and you can create a testarea with buttons to change the font, color, size, etc:
http://www.codeproject.com/jscript/htmlarea.asp