Is there a jQuery plugin to select user emails into a text field? Like Facebook

I am looking for something similar to Facebook massage "To" field.

ExtJS has very nice UI component called Ext.ux.BoxSelect. Is there anything si开发者_如何学Cmilar for jQuery?

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try http://loopj.com/2009/04/25/jquery-plugin-tokenizing-autocomplete-text-entry/ (demo)