Javascript Cookies in Javascript

Cookies in Javascript

function setCookie(name, value, days, path, domain, secure) {
var expires = -1;
if(typeof days == "number" && days >= 0) {
var d = new Date();
d.setTime(d.getTime()+(days*24*60*60*1000));
expires = d.toGMTString();
}
value = escape(value);
document.cookie = name + "=" + value + ";"
+ (expires != -1 ? " expires=" + expires + ";" : "")
+ (path ? "path=" + path : "")
+ (domain ? "; domain=" + domain : "")
+ (secure ? "; secure" : "");
}

function getCookie(name) {
var idx = document.cookie.lastIndexOf(name+'=');

if(idx == -1) { return null; }
var value = document.cookie.substring(idx+name.length+1);
var end = value.indexOf(';');
if(end == -1) { end = value.length; }
value = value.substring(0, end);
value = unescape(value);
if(value=='invalid')
return null;
if(value=='NA')
return null;
return value;
}