The jQuery Form Plugin allows you to easily and unobtrusively upgrade HTML forms to use AJAX. The main methods, ajaxForm and ajaxSubmit, gather information from the form element to determine how to manage the submit process. The Form Plugin API provides several methods that allow you to easily manage form data and form submission.
The jQuery Form Plugin you can download at:
Requirements: jQuery v1.3.2 and later
Compatibility: All-most all Browsers