I still have the problem of getting the ajaxForm() function to work with <input type="image"> of JQuery Form Plugin 2.28 (with JQuery 1.2.6), which is supposed to fix a similar/related issue.
For the first mouse click on the type-image-input, _all_ form vars are POSTed correctly, including, e.g., """&vu.x=13&vu.y=7""" and updates the designated portion within the outer <form>...</form> with the AJAX response, everything seems to be fine. However, the """&""" vars are completely missing from the _subsequent_ AJAX POSTs. I try to set "semantic: True" according to its documentation, but to no avail. It probably still sounds hopelessly confusing -- the live problem is with the link vote up/down portion of the site http://collectivesys.com (sorry registration/login is required to vote). Thanks in advance. Sincerely, Jerry