Text area with autosuggest and removal functionality

I am working on a simple messaging system. For composing the message, I provide a text area. This text area should have an autosuggest functionality and also something like a "remove" button.

Can you tell me how to implement this sort of functionality? I think there is a jQuery plugin to accomplish something like this, but I can't recall the name.

Here is a mockup of what I'm expecting:

markup http://img138.yfrog.com/img138/6428/autosuggesttextarea开发者_Go百科.jpg

I think what you want is something like facebook autocomplete.

Try this: Jquery or Prototype