Form validation

[eluser]Alix.G[/eluser]
Hi,

Is it possible to make a callback on two field at the same time, I mean I would like to check if username/password are ok, but using a single callback.

Thanks

[eluser]pistolPete[/eluser]
http://ellislab.com/forums/viewreply/548657/

[eluser]Alix.G[/eluser]
Thank you very much