Components: combobox and comboitem.
A combobox is a special text box that embeds a drop-down list. With comboboxes, users are allowed to select from a drop-down list, in addition to entering the text manually.
<combobox><comboitem label="Simple and Rich"/> <comboitem label="Cool!"/> <comboitem label="Ajax and RIA"/> </combobox>
Mouseless Entrycombobox
Alt+DOWN to pop up the list.
Alt+UP or ESC to close the list.
UP and DOWN to change the selection of the items from the list.