All of the surveyed browsers ignore any VALUE attribute, if it
is present. When the image is activated, the form data is submitted along with two
extra name/value data items: the X- and Y-coordinates of the point of activation
on the image. Coordinates are sent in this format -
- Item 1
- Name: [name].x
- Value: [x-position]
- Item 2
- Name: [name].y
- Value: [y-position]