function setCookie(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;
}

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));
}

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

function fixDate(date) {
 var base = new Date(0);
 var skew = base.getTime();
 if (skew > 0)
  date.setTime(date.getTime() - skew);
}