How to catch the zoom level of GoogleMap

Dec 7, 2010 at 11:12 AM

Hi,

1.  I want to catch the zoom level of google map .

2.   How to change the color of google marker when user drag the mouse on some location like in asia(Google marker color is rad)

find out the India(Google marker color is green).

plz help me out for finding the solution asap.

Thanks