Popup zimlet

Hi all,
i'm newbie in zimbra.
I'm modifying com_zimbra_gmaps.
Current behavior com_zimbra_gmaps: hover a postal address (Valid), a tooltip popup, but when mouse move out postal address, tooltip auto close.
I wanna create same package. But tooltip doesn't auto close, and i can embedded Google Map to this tooltip so i can drag and drop map in tooltip.
Have any idea for me?
Thanks all.