metadaddy-sfdc/Visualforce-Multiselect-Picklist — pull request #3 by shoaibshakeel381 (2013-12-30 10:45:27+00:00)
Title: Added support for hiding Up/Down buttons

Sometimes we do not need Up/Down buttons like in case of selecting User Roles. So i have added extra attribute: showUpDownButtons
It this attribute is false Up/Down buttons will not be displayed. Default value is true and it is an optional attribute.