Many a times you would like to perform field level validations, before submitting the form by email. Also a lot of you would like to hide the submit button when the form is emailed to the end user
I have included a simple form which demonstrates this capability
Please click here to get the pdf Click Here to get the pdf
Let me know if you have any further questions
Original article at http://eslifeline.wordpress.com/2009/01/28/disabling-form-fields-with-validation/.