click to bind a second bubbletip
to the trigger element
$('#a1_trigger').bubbletip($('#tip1_trigger2'), {
positionAtElement: $('#a1_target'),
deltaDirection: 'down',
delayShow: 500,
delayHide: 1000
});
click to unbind the second bubbletip
$('#a1_trigger').removeBubbletip($('#tip1_trigger2'));