Like in outlook (or gmail) where you can just type into an input field to select multiple items. The value for each item isn't what is displayed, just like a normal multi select box, for example in the screenie below it has a values of "VA", "MI" and "DE".
We're using this in an app so that users can type in the names/emails/etc of people to send items to, but the value of the fields is the user IDs.
I've only tried it with a local store setup as in the demo, but seems to work well on FF, IE6, IE7 and Safari.
30/11/2007 - v0.0.3 - fixed bug where multiple fields didn't initialize data properly
30/11/2007 - v0.0.2 - added validation, fixed bug deleting items
29/11/2007 - v0.0.1 - initial version
Bugs reports and Suggestions are very welcome! Cheers.
Source on GitHub