adding 3 buttons to form.php

Hello dear Guestbook members,

I am new on this forum, I live in Holland and I am playing with the Guestbook for a few weeks now.
So far all goes fine and I made some modifications so the Guestbook fits perfect in our website.
The last few days I have been trying to place 3 buttons on the form.php, the Bold button, the Italic and the underline button , the same as on this form.
The buttons are on the form.php now, but I cant get them working, can somebody help me please.
I have AGcode and HTML activated in General settings.

greetings from nimf

You would have to add the JavaScript for doing it. Or have a look at Lazarus. Link in my signature.

Hello carbonize, thanks for your answer, there is only a "little" problem I have been looking on this site and on lazarus but I really dont know wich part of the javascript I have to use.
On both guestbooks I cant find the code in a template only when I look at the source code.
So please help me on the way.

Sorry if my English isn't so well.