looking for javascript - json - load on demand combo box

I have seen Flexbox (http://www.fairwaytech.com/flexbox) which appears quite nice bu开发者_C百科t I don't think it is dynamic in nature where as someone types it will go back to the server to get only those results that start with the typed in text.

I was looking at a telerik combobox which is nice but it requires a bunch of web.config entries which I am trying to avoid.

Anyone know of any other client based type ahead combo boxes?

thx

After getting on jQuery::Automplete, all questions with combos/autocomplete is closed for me.