You mention this :
#1. make sure you name your form, i.e. <form name="someform"...>
#2. in the img src tag, put <img src="blah.jpg" onclick="document.forms.someform.FIELDNAME.value='someval'; return true">
Not sure how the form field gets the image name, by doing onclick, you have the onclick value as someval...
Can you give me a better example as it would look like in a form so that I can test this to learn from it, before I use it.
Please... 🙂