This Visualforce component is a twin-list multiselect picklist, modelled on the native component used for adding tabs to a Force.com application.
Two lists of options are shown side-by-side; the user may move items between the left and right lists, and reorder items on the righthand list:
JavaScript is used to manipulate the lists in the browser; no server round trips are required until the page is submitted.
Here's how you might use the component in a Visualforce page:
<c:MultiselectPicklist leftLabel="Available Contacts"
leftOptions="{!allContacts}"
rightLabel="Selected Contacts"
rightOptions="{!selectedContacts}"
size="14"
width="150px"/>
Install the unmanaged package, or download the code and add to your org.
Feel free to fork, improve, and submit pull requests!
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