Custom Dialog Instant Web Publishing

[aniron]

I'm using Filemaker Pro 7, and made a database with custom dialogs on error's etc. However, I'm sharing this database over the internet, other Mac's arround have OS 9 running, so it's not possible to have FM7 running.

Is it, in some way, to generate custom dialogs in Instand Web Publishing? So, if a field is empty that should not be empty, the user will get a message after pressing the 'finished' button??

thanks for your help.

greetings,

Michiel