Asp classic - using ajax to submit each field in a form

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ASP

Ajax

Hi, hopefully someone can point a total non web programmer in the right direction - I know a little so be gentle :)

I have a web form that has dynamic content on there, each field has a specific value associated, i.e. Q12345 related to a field in a table, under ID 12345 - so i can trace what is being posted as I wont actually know. So - we have these forms - sometimes they have 300 items on there. The pages are session less so there should not be any timeouts but the problem is, some client's, users are saying that they have saved the form and then refuse to fill it out again - who could blame them ! so what I need to do, is use ajax i believe, to post each of these questions on the form, as they fill it out. I would just want to post a few pieces of information:

A code we call ACode which is hidden field that holds the value of the "form as a whole"
A client identifier field called CID
and a Question field, which has either a graphic or text box or both
I am happy to do a separate post on the graphic and the text box just so we have a bullet proof save

At the moment, it is one form and everything gets posted in one go. this can take up to 10 seconds to digest at the server end.

So what Im looking for, is an onclick that runs an ajax post (I think, correct me if I am wrong) that will post just the bit that I want to send to the server

if that is possible, is it also possible, if for example the user was on wifi and the signal went down, can i send back a piece of information to the browser, from the server to say "save answer ok" and if that did not return to the browser, on the next post, it would try and send what originally didnt go PLUS what has just been answered.
effectively, if the wifi was down for a while then some sort of alert to let the user know, the form cannot be saved until there is a response from the server, to which whatever was not sent, can be sent in one go.

Im not expecting anyone to write it for me - I wont learn anything that way, but if some code was to be shown i.e. the ajax, an example object and method of maybe doing the error capturing on the save to build it up for the next save try then that would be really appreciated.

Sorry I cant even show any code - I have nothing to show other than its just a huge form asking questions and I want to send each reply as they happen rather than a whole form on a submit.

Thanks!

What I have tried:

googling, codeproject, Ive seen some php similar answers, but nothing for asp classic