<script LANGUAGE="JavaScript">

cookie_name = "dataCookie";

function putCookie() {

if(document.cookie != document.cookie)
{index = document.cookie.indexOf(cookie_name);}
else
{ index = -1;}
</SCRIPT>
<script LANGUAGE="JavaScript">

cookie_name = "dataCookie";

function getName() {
if(document.cookie)
{
index = document.cookie.indexOf(cookie_name);
if (index == -1)
{javascript:go ('home.htm');}
}
</SCRIPT>

<script LANGUAGE="JavaScript">

cookie_name = "dataCookie";

function putCookie() {

if(document.cookie != document.cookie)                 <-- This is a weird piece! (*)
{index = document.cookie.indexOf(cookie_name);}
else
{ index = -1;}
</SCRIPT>
<script LANGUAGE="JavaScript">

cookie_name = "dataCookie";

function getName() {
if(document.cookie)
{
index = document.cookie.indexOf(cookie_name);
if (index == -1)
{java script:go ('home.htm');}
}
</SCRIPT>

<script language='JavaScript'>
function setCookie(page){ //This is the function that sets the cookies
var date = new Date(); //A date-var
var expires = 24*60*60*1000; //This is the time the cookie is valid in milliseconds (This is 1 day)
date.setTime(date.getTime()+expires); //This is where we see when the cookie is no longer valid
var expires = "; expires="+date.toGMTString(); //We're going to need this for the cookie
document.cookie = "page=" + page + expires; //Filling the cookie with data (Important: this cookie needs the variable expires!
window.location = page; //Redirecting to the given page
}

function getCookie(){ //This function will check the cookies
if(!document.cookie) return; //If no cookie: return
var cookie = document.cookie; //Getting the data from the cookie to a var
var cookie = cookie.split("="); //Splitting the data at '='
j=false; //This will be clear a few lines later
for(i=0;i<cookie.length;i++){ //A for-loop that will run once for each piece of the array cookie
if(cookie[i] == "page") j=i+1; //If the piece of the array is equal to "page" our var in the first function, we save the position + 1 in the var j. Why 'i+1': this is the piece of the array that will contain the page, since we splitted at '='
}
if(!j) return; //If j is not set, see the line 'j=false', return. (This is when there is a cookie, but it doesn't contain the right data.
document.location = cookie[j]; //And again: redirect to the given page
}
window.onload = getCookie; //Makes the function getCookie() start when the page is loaded
</SCRIPT>