DHTMLX
  
DHTML eXtensions - professional AJAX components for advanced Web UI.

Features details

Initialization from HTML Select/XML/Javascript

You can convert existing select boxes to dhtmlxCombo objects automatically, enablng automatic conversion, or manualy with script method. Combobox also can be initialized from xml or javascript.

Filtering

Filtering means the ability to narrow already loaded list by typing in combobox. You can try it in Live Demo on component home page.

Autocomplete

It is easy to implement autocomplete functionlity with dhtmlxCombo. In contrast to filtering, autocomplete loads values from external datasource while user types in Combobox. Live sample, which works with thousands of possible values is available.

Ability to include images or other objects in list

dhtmlxCombo has native support for including images and other objects (like checkboxes for example) into the list