function getCookie(name)
{
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1)
  {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  }
  else
    begin += 2;

  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
	  end = dc.length;

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