Disable AW.Templates.Combo

var list = new AW.UI.List;
list.setItemText(<<m.lcItems>>);
list.setItemValue(<<m.lcValues>>);
list.setItemCount(<<m.lnItems>>);
list.setStyle('color', '<<HTMLcolor(.ItemForeColor)>>');
var cbo = new AW.Templates.Combo;
cbo.setStyle('color', '<<HTMLcolor(.ForeColor)>>');
setCellTemplate(cbo, <<m.tcCol>>);
setPopupTemplate(list, <<m.tcCol>>);

How can I disable cbo,
IOW prevent user from dropping the list down
and/or select an item in the list?

thanks