The HTML List Box is a multi-column select box that mimics the functionality of a list box in a thick client application. The user is able to select and deselect a number of items from what appears to be a select box. In reality, the box is a table within a div which has a set height and an overflow scrollbar. JQuery handles the hovering and selection of the list items. The radio buttons allow the user to select a batch of items within the list. In this case, countries can be selected by continent.