Originally Posted by tangoforce
An image in place of a submit button has no value. The very code you show has no value to it and no it won't be sent.
When a form is submitted by clicking on an image defined like that the x
co ordinates within the image where the mouse cursor was when the button was clicked are sent. I have not come across any form where the spot on the image you click would make any difference but presumably whoever wrote that part of the specification could see such a need.
The safest thing to do if you only have the one submit button in your form is to not give it a name at all.