If you need to create collapsible and expandable fieldset, this jQuery plugin might be helpful. This plugin can collapsed or hide fieldset and it's content by clicking it's legend. You can also decide the initial state for your fieldset wheter it's expanded or collapsed. The separated CSS file will also useful if you need to modify the fieldset appearance. By the way, I named this plugin coolfieldset.

This jQuery plugin will help you to create an AJAX auto-suggest or auto-complete textfield easily. Some features it has are :

• Customizable styles via one CSS file.
• You can set its width to automatically adjust to the textfield's width or your preferred width.
• You can specify how many characters typed to trigger the auto-suggest.
• Stay on top of combobox in IE 6.
• The data transferred from server is using JSON (JavaScript Object Notation).