function CH1903_WGS84(y, x) {
	var x_ = (x - 200000) / 1000000;
	var y_ = (y - 600000) / 1000000;

	var lambda_ = 2.6779094 + (4.728982 * y_) + (0.791484 * y_ * x_) + (0.1306 * y_ * x_ * x_) - (0.0436 * y_ * y_ * y_);
	var phi_ = 16.9023892 + (3.238272 * x_) - (0.270978 * y_ * y_) - (0.002528 * x_ * x_) - (0.0447 * y_ * y_ * x_) - (0.0140 * x_ * x_ * x_);

	return {
		lng : lambda_ * 100 / 36, 
		lat : phi_ * 100 / 36
	};
}