http://gegsa.es/js/warnCookies.js

1///////////////////////////////////////
2// Author: Donatas Stonys            //
3// WWW: http://www.BlueWhaleSEO.com  //
4// Date: 26 July 2012                //
5// Version: 0.9                      //
6///////////////////////////////////////
7
8// Asign current date to variable //
9var currentDate = new Date();
10
11// Create some DOM elements
12var newCookiesWarningDiv = document.createElement("div");
13
14// Retrieving cookie's information
15function checkCookie(cookieName) {
16	"use strict";
17	var cookieValue, cookieStartsAt, cookieEndsAt;
18
19	// Get all coookies in one string
20	cookieValue = document.cookie;
21	// Check if cookie's name is within that string
22	cookieStartsAt = cookieValue.indexOf(" " + cookieName + "=");
23	if (cookieStartsAt === -1) {
24		cookieStartsAt = cookieValue.indexOf(cookieName + "=");
25	}
26	if (cookieStartsAt === -1) {
27		cookieValue = null;
28	} else {
29		cookieStartsAt = cookieValue.indexOf("=", cookieStartsAt) + 1;
30		cookieEndsAt = cookieValue.indexOf(";", cookieStartsAt);
31
32		if (cookieEndsAt === -1) {
33			cookieEndsAt = cookieValue.length;
34		}
35
36		// Get and return cookie's value
37		cookieValue = unescape(cookieValue.substring(cookieStartsAt, cookieEndsAt));
38		return cookieValue;
39	}
40}
41
42// Cookie setup function
43function setCookie(cookieName, cookieValue, cookiePath, cookieExpires) {
44	"use strict";
45
46	// Convert characters that are not text or numbers into hexadecimal equivalent of their value in the Latin-1 character set
47	cookieValue = escape(cookieValue);
48
49	// If cookie's expire date is not set
50	if (cookieExpires === "") {
51		// Default expire date is set to 6 after the current date
52		currentDate.setMonth(currentDate.getMonth() + 6);
53		// Convert a date to a string, according to universal time (same as GMT)
54		cookieExpires = currentDate.toUTCString();
55	}
56
57	// If cookie's path value has been passed
58	if (cookiePath !== "") {
59		cookiePath = ";path = " + cookiePath;
60	}
61
62	// Add cookie to visitors computer
63	document.cookie = cookieName + "=" + cookieValue + ";expires = " + cookieExpires + cookiePath;
64
65	// Call function to get cookie's information
66	checkCookie(cookieName);
67}
68
69// Check if cookies are allowed by browser //
70function checkCookiesEnabled() {
71	"use strict";
72	// Try to set temporary cookie
73	setCookie("TestCookieExist", "Exist", "", "");
74	// If temporary cookie has been set, delete it and return true
75	if (checkCookie("TestCookieExist") === "Exist") {
76		setCookie("TestCookieExist", "Exist", "", "1 Jan 2000 00:00:00");
77		return true;
78	// If temporary cookie hasn't been set, return false	
79	}
80	if (checkCookie("TestCookieExist") !== "Exist") {
81		return false;
82	}
83}
84
85// Add HTML form to the website		
86function acceptCookies() {
87	"use strict";
88
89	document.getElementById("cookiesWarning").appendChild(newCookiesWarningDiv).setAttribute("id", "cookiesWarningActive");
90	document.getElementById("cookiesWarningActive").innerHTML = "<strong id='text'>Nos gustar&iacute;a a&ntilde;adir cookies en su ordenador para mejorar el sitio. </strong><span id='readMoreURL'></span><form name='cookieAgreement'><input type='checkbox' name='agreed' value='Agreed' class='checkbox'><span class='acceptance'>Acepto las cookies de este sitio.</span><input type='submit' value='Continuar' onclick='getAgreementValue(); return false;' class='button'></form>";
91	// Change the URL of "Read more..." here
92	document.getElementById("readMoreURL").innerHTML = "<a href='http://www.ico.gov.uk/for_organisations/privacy_and_electronic_communications/the_guide/cookies.aspx' title='ICO - New EU cookie law (e-Privacy Directive)' target='_blank' rel='nofollow'>Leer m&aacute;s...</a>";
93}
94
95function acceptCookiesTickBoxWarning() {
96	"use strict";
97
98	setCookie("TestCookie", "Yes", "", "1 Jan 2000 00:00:00");
99	document.getElementById("cookiesWarning").appendChild(newCookiesWarningDiv).setAttribute("id", "cookiesWarningActive");
100	document.getElementById("cookiesWarningActive").innerHTML = "<strong id='text'>Nos gustar&iacute;a a&ntilde;adir cookies en su ordenador para mejorar el sitio. </strong><span id='readMoreURL'></span><form name='cookieAgreement'><p id='warning'><small>Usted debe marcar la casilla 'Acepto las cookies de este sitio'. Si contin&uacute;a sin cambiar su configuraci&oacute;n, asumiremos que desea recibir todas las cookies de este sitio..</small></p><input type='checkbox' name='agreed' value='Agreed' class='checkbox'><span class='acceptance'>Acepto las cookies de este sitio.</span>

100<input type='submit' value='Continuar' onclick='getAgreementValue()' class='button'></form>";
101	// Change the URL of "Read more..." here
102	document.getElementById("readMoreURL").innerHTML = "<a href='http://www.ico.gov.uk/for_organisations/privacy_and_electronic_communications/the_guide/cookies.aspx' title='ICO - New EU cookie law (e-Privacy Directive)' target='_blank' rel='nofollow'>Leer m&aacute;s...</a>";
103}
104
105// Check if cookie has been set before //
106function checkCookieExist() {
107	"use strict";
108	// Call function to check if cookies are enabled in browser
109	if (checkCookiesEnabled()) {
110		// If cookies enabled, check if our cookie has been set before and if yes, leave HTML block empty
111		if (checkCookie("TestCookie") === "Yes") {
112			document.getElementById("cookiesWarning").innerHTML = "";
113		// If our cookie hasn't been set before, call cookies' agreement form to HTML block	
114		} else {
115			acceptCookies();
116		}
117	} else {
118		// Display warning if cookies are disabled on browser
119		document.getElementById("cookiesWarning").appendChild(newCookiesWarningDiv).setAttribute("id", "cookiesWarningActive");
120		document.getElementById("cookiesWarningActive").innerHTML = "<span id='cookiesDisabled'><strong>Cookies are disabled. We use cookies to give you the best online experience.</strong><br /> Your browser currently not accepting cookies.</span>";
121	}
122}
123
124// Get agreement results
125function getAgreementValue() {
126	"use strict";
127
128	// If agreement box has been checked, set permanent cookie on visitors computer
129	if (document.cookieAgreement.agreed.checked) {
130		// Hide agreement form
131		document.getElementById("cookiesWarning").innerHTML = "";
132		setCookie("TestCookie", "Yes", "", "");
133	} else {
134		// If agreement box hasn't been checked, delete cookie (if exist) and add extra warning to HTML form
135		acceptCookiesTickBoxWarning();
136	}
137}