Guestbook Problem

[toddpianoworks]

Hello all,

I just created a guestbook on my website. However, I get the following:

Warning: date() expects parameter 2 to be long, string given in /home/llpmomh/public_html/guestbook.php on line 240

It says this over and over line after line on the guestbook.

Can someone tell me what I need to do to correct this please?

Thank you,
Matthew