Features

ability to double click on either select box to move elements from one side to the other

added headers to the select boxes

ability to change layout easily, using CSS classes and a mini template

allows to change item size shown of each multiple select box

ability to manage one single list with checkboxes to solve problem if javascript is unavailable

ability to sort lists (by programming, or user-end handling)

display live counter (selected/unselected items count). Available since version 1.3.0

ability to use fancy attributes (disabled, CSS class and style) on both template mode (single or dual) and keep them on move. Available since version 1.5.0

add or remove persistant options (disabled attribute) at run-time. Available since version 1.5.0