"Smooth panning magnifier" how to?

1

here is the sample :

http://www.ozcay.com/index1.html

link is BUYUTECLI GALERI - GALLERY WITH MAGNIFIER

I use simple codes for classic magnifier trick. but which codes I must use for this type of magnifier ?

here is my codes in “lens_mc” in _root

setProperty(“largeobject”, _x, (getProperty("/original", _x)-_x)*2);
setProperty(“largeobject”, _y, (getProperty("/original", _y)-_y)*2);

and codes for drag magnifier
on (press) {
startDrag("/lens");
}
on (release) {
stopDrag();
}

that’s it. and here is the fla.