function setCookie(name, value, expires, path, domain, secure) {
 document.cookie = name + "=" + escape(value) +
  ((expires) ? "; expires=" + expires.toGMTString() : "") +
  ((path) ? "; path=" + path : "") +
  ((domain) ? "; domain=" + domain : "") +
  ((secure) ? "; secure" : "");
}
function getCookie(name) {
 var prefix = name + "=";
 var cookieStartIndex = document.cookie.indexOf(prefix);
 if(cookieStartIndex == -1)
   return null;
 var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length);
 if(cookieEndIndex == -1)
   cookieEndIndex = document.cookie.length;
 return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex));
}
function deleteCookie(name, path, domain) {
 if(getCookie(name)) {
  document.cookie = name + "=" +
   ((path) ? "; path=" + path : "") +
   ((domain) ? "; domain=" + domain : "") + 
   "; expires=Thu, 01-Jan-80 00:00:01 GMT";
 }
}
function fixDate(date) {
 var base = new Date(0);
 var skew = base.getTime();
 if(skew > 0)
  date.setTime(date.getTime() - skew);
}