AJAX Form Submit

i need an ajax form submission script written that will post information to a web form that is hosted on a separate domain and submit the info in the background. > the information will be pre-compiled from either a flat-file or mysql db. no information will be "gathered" from the user. the information should change with each unique IP that clicks on the link. > the user will click on a link and the information will post to the form in the background - invisible to the user. > the user should re-direct to landing page after form submission. > the entire process must be hidden from the user and be usable in the major browser programs - FF/IE. > the script should allow editing so a variety of forms may be used with the script.