$(document).ready(function(){
	// changer links when clicked
	$(".fs13, .fs15").click(function(){
		// set the current font size of body as a var called currentSize
		var currentSize = $("body").css('font-size');
		// parse the number value out of the font size value, set as a var called 'num'
		var num = parseFloat(currentSize, 10);
		// make sure current size is 2 digit number, save as var called 'unit'
		var unit = currentSize.slice(-2);
		// javascript lets us choose which link was clicked, by class
		if ($(this).hasClass('fs15')) {
			num = num * 1.4;
		} else {
			num = num / 1.4;
		}
		// set the current fontsize and the units
		$("body").css('font-size', num + unit);
		return false;
	});
});