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);
}
$(document).ready(function(){

var fs = getCookie("cur_size");
$('.main-content').css('font-size', fs);

  // 13px
  $(".fs13").click(function(){
    $('.main-content').css('font-size', 13);
	setCookie("cur_size", "13px");
    return false;
  });

  // 14px
  $(".fs14").click(function(){
    $('.main-content').css('font-size', 14);
	setCookie("cur_size", "14px");
    return false;
  });

  // 15px
  $(".fs15").click(function(){
    $('.main-content').css('font-size', 16);
	setCookie("cur_size", "16px");
    return false;
  });
});