The following doesn't seem to work

            <ext:KeyBinding>
                <Keys>
                    <ext:Key Code="UP" />
                    <ext:Key Code="DOWN" />
                </Keys>
                <Listeners>
                    <Event Handler="node.select();" />
                </Listeners>
            </ext:KeyBinding>
Although the Up/Down keys correctly navigate up and down the TreePanel, it doesn't select the nodes as it goes. We really need the node to be selected as the Up/Down keys are used to navigate. thanks.