Add New Map Features to JEM2.2.0

Dear all,

I requested a programmer to add some new google map features to JEM2.2.0. The major features includes:
1. Master control for Map Height and Zoom Level
2. Map Centre control for individual venue

The details description can be found here:
kb.prohma.org/index.php?title=Add_NewMapFeatures_toJEM220#Project_Specifications

while installation procedures can be found here:
kb.prohma.org/index.php?title=Add_NewMapFeatures_toJEM220#Installation_Procedures

Installation file is attached as follows for your download:

-> Pls. be remember to backup your database and program directory before making any changes

I hope that this new map features can be kept for future release of JEM
-> so are there some way to contact with the developer(s) of JEM for this purpose?

Thanks!

Pls. note that "Map Center" control has NOT been fully implemented!

That is:
(a) only the venue view is working, see the following demo:
mfy8.jm3ime.com/mfy8/index.php/component/jem/venue/108

(b) while the Event-Venue view is NOT working, see the following demo:
mfy8.jm3ime.com/mfy8/index.php/component/jem/event/354
-> the programmer claims that the google map in venue view use javascript code thru which he has more finer control, while Event-Venue view uses iFrame thru which he can only pass a few parameters and not possible to implement the map center control
-> so any Guru knows how to make this happen for the Event-Venue View?

Thanks for any kind of help!