(function() {
	"use strict";

	window.onload = function() {
		document.getElementsByName('size').onchange = changeSize();
		var sizes = document.getElementsByName('size');
		for (var i = 0; i < sizes.length; i++) {
			sizes[i].onchange = changeSize();
		}
	};

	function changeSize() {
		var fontSizes = document.getElementsByName('size');
		for(var i = 0; i < fontSizes.length; i++) {
			if(fontSizes[i].checked) {
				alert("font is set to " + fontSizes[i].value);
				document.getElementById('sample').style.fontSize = fontSizes[i].value;
			}
		}
	}
}) ();