dualListBox | Refactored DualListBox

dualListBox is a JavaScript library. dualListBox has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

usage == options listing: ` *transfermode - the type of transfer to perform on items (see heading transfer modes) *sortby - the attribute to use when sorting items (values: 'text' or 'value') *usefilters - allow the filtering of items in either box (true/false) *usecounters - use the visible/total counters (true/false) *usesorting - sort items after executing a transfer (true/false) *selectonsubmit - select items in box 2 when the form is submitted (true/false) ` all options have default values, and as such, are optional. check the 'settings' json object below to see the defaults. transfer modes: ` * 'move' - in this mode, items will be removed from the box in which they currently reside and moved to the other box. this is the default. * 'copy' - in this mode, items in box 1 will always remain in box 1 (unless they are hidden by filtering). when they are selected for transfer they will be copied to box 2 and will be given the class 'copiedoption' in box 1 (my default styling for this class is yellow background but you may choose whatever styling suits you). if they are then transferred from box 2, they disappear from box 2, and the 'copiedoption' class is removed from the corresponding option in box