var size = 1.4;
var step = 0.2;

function larger()
{ 
	
	if (!document.getElementById)
		return;

	var sizer = document.getElementById('resizer');
	if (!sizer)
		return;
	
	if (size < 2.2)
	  {
	  size += step;
	  sizer.style.fontSize = size + 'em';
  	
	  storeSize();
	  }
}

function smaller()
{
	if (!document.getElementById)
		return;

	var sizer = document.getElementById('resizer');
	if (!sizer)
		return;

	if (size > 0.8)
	  {
	  size -= step;
	  sizer.style.fontSize = size + 'em';

	  storeSize();
	  }
}

function storeSize()
{
	var expires = new Date();
	expires.setTime(expires.getTime() + 365 * 24 * 60 * 60 * 1000);

	var cContent = size;
	Cookie.setCookie('size', cContent, expires, null, null, null);
}

function restoreSize()
{
	var cContent = String(Cookie.getCookie('size'));
	size = cContent;

	var sizer = document.getElementById('resizer');
	if (!sizer)
		return;

	sizer.style.fontSize = size + 'em';
}

function init()
{
	if (!Cookie.getCookie('size'))
	{
		var cContent = size;
	
		var expires = new Date();
		expires.setTime(expires.getTime() + 365 * 24 * 60 * 60 * 1000);
		Cookie.setCookie('size', cContent, expires, null, null, null);
	}
}

function Cookie() { }

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

Cookie.getCookie = function(name)
{
  var curCookie = document.cookie;
  var prefix = name + '=';

  var begin = curCookie.indexOf('; ' + prefix);
  if (begin < 0)
  {
    begin = curCookie.indexOf(prefix);
    if (begin != 0) return null;
  }
  else begin += 2;

  var end = document.cookie.indexOf(';', begin);
  if (end < 0) end = curCookie.length;

  return unescape(curCookie.substring(begin + prefix.length, end));
}

Cookie.deleteCookie = function(name, path, domain)
{
  if (getCookie(name))
  {
    document.cookie = name + '=' +
    ((path) ? "; path=" + path : "") +
    ((domain) ? "; domain=" + domain : "") +
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}

Cookie.fixDate = function(date)
{
  var base = new Date(0);
  var skew = base.getTime();

  if (skew > 0) date.setTime(date.getTime() - skew);
}

window.onload = init;