function fontsizeminus(){
	var body = document.getElementsByTagName('body')[0];
	font_size = body.style.fontSize;
	font_size = parseInt(font_size.replace("%", ""),10);
	font_size = font_size-2;
	body.style.fontSize = font_size+"%";
	set_cookie('fontsize',font_size,0);
}

function fontsizeplus(){
	var body = document.getElementsByTagName('body')[0];
	font_size = body.style.fontSize;
	font_size = parseInt(font_size.replace("%", ""),10);
	font_size = font_size+2;
	body.style.fontSize = font_size+"%";
	set_cookie('fontsize',font_size,0);
}

function fontsizenormal(){
	var body = document.getElementsByTagName('body')[0];
	body.style.fontSize = "70%";
	set_cookie('fontsize',70,0);
}

function set_cookie(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=/";
}