/* cookie lib */
function getExpDate(days, hours, minutes) {
  var expDate = new Date();
  if (typeof days == "number" && typeof hours == "number" && typeof hours == "number") {
    expDate.setDate(expDate.getDate() + parseInt(days));
    expDate.setHours(expDate.getHours() + parseInt(hours));
    expDate.setMinutes(expDate.getMinutes() + parseInt(minutes));
    return expDate.toGMTString();
  }
}

// utility function called by getCookie( )
function getCookieVal(offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1) {
    endstr = document.cookie.length;
  }
  return unescape(document.cookie.substring(offset, endstr));
}

// primary function to retrieve cookie by name
function getCookie(name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg) {
      return getCookieVal(j);
    }
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) {
      break;
    }
  }
  return "";
}
// store cookie value with optional details as needed
function setCookie(name, value, expires, path, domain, secure) {
  document.cookie = name + "=" + escape (value) +
                    ((expires) ? "; expires=" + expires : "") +
                    ((path)    ? "; path=" + path : "") +
                    ((domain)  ? "; domain=" + domain : "") +
                    ((secure)  ? "; secure" : "");
}

// remove the cookie by setting ancient expiration date
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";
  }
}

/**************************************************/