def METHOD_NAME(self, widget, event):
    """Handles up/down "key-press-event" in the lyrics view."""
    adj = self.scrolled_window.get_vadjustment().props
    if event.keyval == Gdk.KEY_Up:
        adj.value = max(adj.value - adj.step_increment, adj.lower)
    elif event.keyval == Gdk.KEY_Down:
        adj.value = min(adj.value + adj.step_increment,
                        adj.upper - adj.page_size)
    elif event.keyval == Gdk.KEY_Page_Up:
        adj.value = max(adj.value - adj.page_increment, adj.lower)
    elif event.keyval == Gdk.KEY_Page_Down:
        adj.value = min(adj.value + adj.page_increment,
                        adj.upper - adj.page_size)
    elif event.keyval == Gdk.KEY_Home:
        adj.value = adj.lower
    elif event.keyval == Gdk.KEY_End:
        adj.value = adj.upper - adj.page_size
    else:
        return False
    return True