jxSlider widget turns the selected DIV into a small embedded ajax tabbed-navigator. The ajax-loaded content will automatically and recursively be shown into the initial DIV.
Best jQuery Ajax Plugins & Tutorials with Demo
Ajax Easy Expand jQuery
Easily and quickly create multiple expandable / collapsable regions on the same page. Each easy expand element will look like an accordion but but with more options. Unlike an accordion you’ll be able to open as many easy expand elements as you want at one time. Alternatively, you may close them all at the same time if you wish. You can preset each individual easy expand element to appear open or close at page load.
Dynamically adding form inputs and submit using jQuery
You may find a need to allow the user to dynamically add or remove text inputs from your application. This is relatively easy to do using jQuery and using arrays to submit the form data to a PHP page. This tutorial runs through setting up the form with the controls to add, remove and reset the form fields as well as preparing the form variables to be sent using AJAX.