ysf7

I want to Calculate the x and y values of fusion Maps based on latitude and Longitude Coordinates of city Eg. Vapi: Coordinates: 20°22′N 72°54′E i want to know x and y values of marker tag for city is there a way to find out ? any formula or js method where i enter latitude and longitudes and it returns x and y values of city... there is only limited cities in markerXML folder Regards, Yusuf