var size=100;
function setCookie (name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setStr = null;
	var offset = 0;
	var end = 0;
	if (cookie.length > 0) {
		offset = cookie.indexOf(search);
		if (offset != -1) {
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if (end == -1) {
				end = cookie.length;
			}
			setStr = unescape(cookie.substring(offset, end));
		}
	}
	return(setStr);
}



function larger()
{
 size=parseInt(size)+20;
 if (size>160) size=160;
 document.body.style.fontSize=size+"%";
 savefont();
}

function smaller()
{
 size=parseInt(size)-20;
 if (size<60) size=60;
 document.body.style.fontSize=size+"%";
 savefont();
}

function savefont()
{
 setCookie('fontsize',size,"Mon, 01-Jan-2020 00:00:00 GMT","/");
}

function setfont()
{
 size=getCookie('fontsize');
 if (!size) size=100;
 if (size>160) size=160;
  if (size<60) size=60;
 document.body.style.fontSize=size+"%";
}