Facebook-Like Inputs With jQuery Or MooTools
It is possible to create stylish textboxes with auto-complete feature, just like Facebook has, using plugins for jQuery & MooTools.
Autobox is a jQuery plugin that makes creating textboxes with auto-complete support easier.
Values expected can be mentioned staticly or called dynamically via Ajax requests. Documentation for the plugin can be found here.
It can be feeded with data from any data-source easily, makes a binary search for a better performance & offers various options for maximum flexibility.