var textsizevalue;

function sizeBigger(){
	var cookiesize = readCookie("textsize");
	if(!cookiesize){
		createCookie("textsize", "111", 1000);
		textsizevalue = 111;
	}else{
		textsizevalue = cookiesize - (-10);
		createCookie("textsize", textsizevalue, 1000);
	}
	
	setCSS();
}

function sizeReset(){
	createCookie("textsize", "101", 1000);
	textsizevalue = 101;
	setCSS();

}

function sizeSmaller(){
	var cookiesize = readCookie("textsize");
	if(!cookiesize){
		createCookie("textsize", "91", 1000);
		textsizevalue = 91;
	}else{
		textsizevalue = cookiesize - (10);
		createCookie("textsize", textsizevalue, 1000);
	}
	
	setCSS();
}

function setCSS(){
	document.documentElement.style.fontSize = textsizevalue + "%";
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

textsizevalue = readCookie("textsize");
if(!textsizevalue){
	textsizevalue = 101;
}
setCSS();