I'd like to request some improvements for the combobox control in HTML forms.
1. The style should be customizable, e. g. the border type and color and the arrow element
via CSS: the normal possibilities (see e. g. normal textbox)
via HTML attribute: <select border="1" bordercolor="blue" color="white">
2. There should be multi-column support as it is e. g. in Microsoft Access' dropdown boxes
3. There should be support for free text input and autoselect of predefined values; configurable should also be the property to allow free text or only selection of predefined values
4. In a long list of elements, pressing key "G" and then "e" should not go to first element beginning with "G" and then to first element beginning with "e"; it should select the first element beginning with "Ge" - I expect this as normal behaviour in a modern GUI.