offset google maps center

gistfile1.txt

function offsetCenter(map, latlng, offsetx, offsety) {

	// latlng is the apparent centre-point
	// offsetx is the distance you want that point to move to the right, in pixels
	// offsety is the distance you want that point to move upwards, in pixels
	// offset can be negative
	// offsetx and offsety are both optional

	var scale = Math.pow(2, map.getZoom());
	var nw = new google.maps.LatLng(
	    map.getBounds().getNorthEast().lat(),
	    map.getBounds().getSouthWest().lng()
	);

	var worldCoordinateCenter = map.getProjection().fromLatLngToPoint(latlng);
	var pixelOffset = new google.maps.Point((offsetx/scale) || 0,(offsety/scale) ||0)

	var worldCoordinateNewCenter = new google.maps.Point(
	    worldCoordinateCenter.x - pixelOffset.x,
	    worldCoordinateCenter.y + pixelOffset.y
	);

	var newCenter = map.getProjection().fromPointToLatLng(worldCoordinateNewCenter);

	map.setCenter(newCenter);

}