Draw google maps grid always in the same place?

Hi everybody, I can create a grid of cells inside a given boundary in google maps, the priblem is I want this grid overlay to be always the same! no matter where my bounds are/start, I use polylines to create the greed as you can see in code bellow.

http://jsfiddle.net/geocodezip/8z38L0o0/1/

Is it possible to do? will the grid cells always hold the same latitudes and longitudes? This is important becuase I want the overlay to always be the same.