same form wrong values

when a user submits a wrong value for a field is there a way to return the form with the given values but with a red asterix indicating where the error was and their previous values still filled in.

I would like to do that instead of having to make them go back a page. Is this only possible in javascript or somthing?

Client side - use Javascript to validate the form before it is submitted to the server.

Server side - after the form is submitted check for errors. If there are errors, redisplay the form with the fields highlighted.

This will require your form to accept data - to pre-load the fields with values. Part of the the data supplied to the form could be a list of fields identified with errors. Your form display code can then choose to highlight the fields.

Grim

thanks grim. is this only done in javascript or can it be done easily in python?

Client side - stick to javascript. at least you know the client has it installed.

Python client scripting did work once (for IE anyway) but not anymore

Grim

you can do the whole thing with Python.

really??? can you let me know o howi would go about doingthis?