function setText(size) {
  document.getElementsByTagName('body').item(0).style.fontSize = size;    
  document.cookie = 'textSize=' + size + ';';
  return false;
}

function getText() {
  var size = getCookie('textSize');
  if (size == null) {
    size = '12px';
  }
  return size;
}

function getCookie(name) {
  var c = document.cookie;
  var prefix = name + "=";

  var start = c.indexOf("; " + prefix);

  if (start == -1) {
    start = c.indexOf(prefix);
    if (start != 0) return null;
  } else {
    start += 2;
  }

  var end = c.indexOf(";", start);
  if (end == -1) {
    end = c.length;
  }

  return unescape(c.substring(start + prefix.length, end));
}