$(':input').bind 'change', (event) =>
		N = $('#entN').val()
		S = $('#entS').val()
		S = Math.max S, 0
		S = Math.min S, N
		$("#entS").val S
		f = S/N
		$("#sorF").text (f*100).toFixed 2
		h = 1.96*Math.sqrt f*(1-f)/N
		c1 = Math.max 0, f-h
		c2 = Math.min 1, f+h
		$("#a1").text (100*c1).toFixed 2
		$("#a2").text (100*c2).toFixed 2