var accessCookie = 'smbva-fontsize';

function getSavedSize() {
  var size = 14;
  var cookieSize = $.cookie(accessCookie);
  if(cookieSize) {
    size = cookieSize;
  }
  return size;
}

function saveSize(size){
  $.cookie(accessCookie, size, { expires: 365 });
}

function modifyFont(increase){
  var newSize = parseFloat($('.yui-b').css('font-size')) + increase;
  if(newSize < 18 && newSize >=14) {
    setFont(newSize);
  }
}

function setFont(size){
  $('.yui-b').animate({fontSize:size},300);
  saveSize(size);
}