private void expand() {
resize(new Coord(sz.x, 100));
setcanfocus(true);
if (sel != null) sel.show();
chansel.show();
expanded = true;
}
public void select(Channel chan) {
Channel prev = sel;
sel = chan;
if (expanded) {
if (prev != null) prev.hide();
sel.show();
resize(sz);
}
}