aihh...still got some problem.

I have created a function for submitting forms. The function will be called onclick of the graphics button.
Why doesn't document.location works in my javascript file?

I have

document.myform.field1.value = aaa
document.myform.field2.value = bbb
document.myform.field3.value = document.myform.field1.value + document.myform.field2.value

So, when I submit the form "document.myform.submit()", all the three values got submitted. I only want to submit field3. How? I have tried "document.location = 'field3'" but doesn't work.