This module uses custom jquery + css + html to replace a standard drupal single dropdown with css-driven dropdown that has much more flexibility with styling than the default browser select element.
Also included in this module is a sub module called "Jquery dropdown jump." All you do is add the class "jquery_dropdown_jump" and it clicks the submit button for you when an item is selected from our CSS dropdown. Also to hide any submit button all you do is give it a class of "jquery_dropdown." Sound fun? Great!
This module is sponsored by http://mediacurrent.com.