If by "textbox", you mean "textarea", that's not possible. The HTML
Textarea element contains pure, plain, uninterpreted text. Tools like
FckEditor (http://www.fckeditor.net/demo/default.html) use a combination of
JavaScript and IFRAME to fake something that looks like a textarea, but a
lot of the functionality (like the ability to edit text) had to be
reimplemented from scratch.

   - Oliver

feel free to do so :)

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lol, sry for that stupid answer. just came from c.l.c news group
and thats what they always answer, if they find a post without
any real question in it.

As to adress, what you would like to do:
use select(int, int), setSelectionEnd, setSelectionStart from
class TextComponent (TextField, TextArea), if you deal with awt
components, or from class JTextComoponent (JTextField, JTextArea)
for swing.

Best regards,
Bart