Here's a nice little script. If you have a basic guestbook, you know there's not a message that tells you your mail has been sent. That's what this does. When your viewer clicks on the Send button, an alert box pops up and displays that the mail is on the way.
The script is not displayed here because it would fill up my e-mail box and throw a lot of errors. Grab the script and try it for yourself.
Here's the script and little guestbook format:
<FORM method="POST" action="donothing" onSubmit="alert('Mail is being sent');">
<B>Please enter your name: </B><input NAME="username" size="30">
<input type=submit value="Send it!">
<input type=reset value="Start over">
</form>
Change the message that comes up by changing the message in the alert section above. Just make sure that the quote mark stays put.