Examples of Combo box controls for the Web

I am looking for examples of Combo box controls relying on jquery, or just javascript and CSS. The control would allow the u开发者_运维知识库ser to slect from a drop down list, or simply type a custom value.

http://www.asp.net/AJAX/AjaxControlToolkit/Samples/ComboBox/ComboBox.aspx

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http://plugins.jquery.com/project/jEC

sample: http://stuff.rajchel.pl/jec/demos/