How to select a item using keypress event in a listbox which has autopostback true

[Mithun J]

Hi friends ,

                    I have two list boxes along with country name.when i select a country in the first list box it should not be found in my second list box so i used autopostback there.now i need to select the country name by key press that is the control has to go to india if i press "i" in my first listbox.how can i solve it.
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Thanks & Regards
Mithun.J
http://www.edcindia.com