I have a form containing two input fields (text and submit). On submit, either there will be an error or there will be a redirection to a confirmation page. I wish for the errors to be displayed in an overlay, which is only possible if I use AutoValidator on the form, otherwise the errors are displayed in a new page. If I use the AutoValidator, in cases where there are no errors (based on the text input), I receive an unspecified error on submit. How could I serve the errors as necessary, within an overlay?