Validation plugin use diff css classes for certain error messages

Validation plugin use diff css classes for certain error messages

i'm using this great plugin, but the prob for me is that all error messages have the same class added to them.
due to the layout of my form, i need to be able to move some of the error messages around in diff ways.
i'll bet there is a way to add a diff error class to elements based on their id or class or whatever, but not sure how to do so.
any ideas?