https://www.270towin.com/js/cookies.js

1/**
2 * Sets a Cookie with the given name and value.
3 *
4 * name       Name of the cookie
5 * value      Value of the cookie
6 * [expires]  Expiration date of the cookie (default: end of current session)
7 * [path]     Path where the cookie is valid (default: path of calling document)
8 * [domain]   Domain where the cookie is valid
9 *              (default: domain of calling document)
10 * [secure]   Boolean value indicating if the cookie transmission requires a
11 *              secure transmission
12 */
13function setCookie(name, value, expiredays, path, domain, secure)
14{
15     var ExpireDate = new Date ();
16     ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
17
18
19    document.cookie= name + "=" + escape(value) +
20        ((ExpireDate) ? "; expires=" + ExpireDate.toGMTString() : "") +
21        ((path) ? "; path=" + path : "") +
22        ((domain) ? "; domain=" + domain : "") +
23        ((secure) ? "; secure" : "");
24}
25
26/**
27 * Gets the value of the specified cookie.
28 *
29 * name  Name of the desired cookie.
30 *
31 * Returns a string containing value of specified cookie,
32 *   or null if cookie does not exist.
33 */
34function getCookie(name)
35{
36    var dc = document.cookie;
37    var prefix = name + "=";
38    var begin = dc.indexOf("; " + prefix);
39    if (begin == -1)
40    {
41        begin = dc.indexOf(prefix);
42        if (begin != 0) return null;
43    }
44    else
45    {
46        begin += 2;
47    }
48    var end = document.cookie.indexOf(";", begin);
49    if (end == -1)
50    {
51        end = dc.length;
52    }
53    return unescape(dc.substring(begin + prefix.length, end));
54}
55
56/**
57 * Deletes the specified cookie.
58 *
59 * name      name of the cookie
60 * [path]    path of the cookie (must be same as path used to create cookie)
61 * [domain]  domain of the cookie (must be same as domain used to create cookie)
62 */
63function deleteCookie(name, path, domain)
64{
65    if (getCookie(name))
66    {
67        document.cookie = name + "=" + 
68            ((path) ? "; path=" + path : "") +
69            ((domain) ? "; domain=" + domain : "") +
70            "; expires=Thu, 01-Jan-70 00:00:01 GMT";
71    }
72}