SW Chosen free WordPress plugin

Converts the select boxes of your WordPress site into Chosen autocomplete boxes Chosen is a wonderful jQuery plugin which changes select tags into user-friendly auto-complete boxes. Configuration This plugin allow you to set a jQuery selector to apply Chosen to. e.g. If you use “select.chosen-box” as the selector, only select boxes with class name “chosen-box” will be converted. You can also manage if you wish to apply Chosen to front-end pages, admin panel pages, both, or neigher.