replace
event.preventDefault();
return false;
with
event.stopPropagation();
event.stopPropagation()
Stops the bubbling of an event to
parent elements, preventing any parent
handlers from being notified of the
event.
event.preventDefault()
Prevents the browser from executing
the default action. Use the method
isDefaultPrevented to know whether
this method was ever called (on that
event object).