function OnGUI() {
	var dof : DepthOfFieldEffect = GetComponent(DepthOfFieldEffect);
	GUILayout.BeginArea(Rect(5,5,250,80), GUI.skin.window);
	GUILayout.Label("Focal distance (1/2 to change): " + dof.focalDistance.ToString("f1"));
	GUILayout.Label("Focal range (3/4 to change): " + dof.focalRange.ToString("f1"));
	GUILayout.EndArea();
}

function Update() {
	var dof : DepthOfFieldEffect = GetComponent(DepthOfFieldEffect);
	var dt = Time.deltaTime;
	if (Input.GetKey("1"))
		dof.focalDistance -= 5*dt;
	if (Input.GetKey("2"))
		dof.focalDistance += 5*dt;
	if (Input.GetKey("3"))
		dof.focalRange -= 5*dt;
	if (Input.GetKey("4"))
		dof.focalRange += 5*dt;
	dof.focalDistance = Mathf.Clamp(dof.focalDistance, 1.0, 15.0);
	dof.focalRange = Mathf.Clamp(dof.focalRange, 1.0, 30.0);
}