function alterFontsize(amount) {
	var cookie = readCookie("size");
	var size = parseFloat(cookie ? cookie : 80);
	//alert("cookie size = "+size);
	size+=parseFloat(amount);
	//alert("new size = "+size);
	if(size>200){
		size=200;
	}else if(size<50){
		size=50;
	}
	createCookie("size", size, 365);
	document.body.style.fontSize = size + "%";
}

function setFontsize(size){
	if(size==null){ size=80 }
	//alert("new size = "+size);
	createCookie("size", size, 365);
	document.body.style.fontSize = size + "%";
}

var cookie = readCookie("size");
var size = cookie ? cookie : 80;
//alert("cookie size = "+size);
document.body.style.fontSize = size + "%";