//COOKIE
var cookiename="mresfs";
var cookieduration=60;

//FONT
var size=75; 
var defaultsize = 75;
var unit='%';
var step=10;
var maximum=200;
var minimum=50;

//HTML ELEMENT
var resizedElementID="main";

function initFontSize() {
	if (!getCookie(cookiename)){
		size=defaultsize;
		setCookie(cookiename,size,cookieduration);
	}
	else{
		size=getCookie(cookiename);
		document.getElementById(resizedElementID).style.fontSize=size+unit;
	}
}

function increaseFont(){
	
	size = (parseInt(size)+step>maximum) ? maximum : parseInt(size) + step;
	document.getElementById(resizedElementID).style.fontSize=size+unit;
	setCookie(cookiename,size,cookieduration);
}

function decreaseFont(){

	size = (parseInt(size)-step<minimum) ? minimum : parseInt(size)-step;
	document.getElementById(resizedElementID).style.fontSize=size+unit;
	setCookie(cookiename,size,cookieduration);
}

function normalFont(){
	size=defaultsize;
	document.getElementById(resizedElementID).style.fontSize=size+unit;
	setCookie(cookiename,size,cookieduration);
}