// JavaScript Document


 $(document).ready(function(){
// changer links when clicked
$("span.changer").click(function(){

//set the div with class mainText as a var called $mainText 
var $mainText = $('#main');

// set the current font size of .mainText as a var called currentSize
var currentSize = $mainText.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 ID
if (num < 18){
	num = num * 1.25;
} else {
	num = 12;
};

// jQuery lets us set the font Size value of the mainText div
$mainText.css('font-size', num + unit);
   return false;
});




});