Check for cookie script correct?

[bacterozoid]

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
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 null;
}
function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}
function DeleteCookie () {
var exp = new Date();
exp.setTime (exp.getTime() - 1000000000);
var cval = GetCookie ('FreeStuffL');
document.cookie ='FreeStuffL' + "=" + cval + "; expires=" + exp.toGMTString();
}
function cookieCreater () {
if(GetCookie('FreeStuffL') == null) {
var FreeStuffL_Name = "joe";
if (FreeStuffL_Name == null && FreeStuffL_Name == "") {
var expdate = new Date ();
expdate.setTime(expdate.getTime() + (24 * 60 * 60 * 1000 * 1));
SetCookie('FreeStuffL', FreeStuffL_Name, expdate);
location.href = "nocookie.htm"
}
}
else {
DeleteCookie ();
cookieCreater ()
}
}
if(GetCookie('FreeStuffL') == null) {
location.href="nocookie.htm"
}
function check() {
var tester = document.login.numOne.value + document.login.numTwo.value;
if (tester == "") {
alert ("Incorrect Password");
}
else
{
if (tester == document.login.numThree.value) {
cookieCreater ();
}
else {
alert ("Incorrect Password");
}
}
}
// End -->
</SCRIPT>


Ok, first of all, I modified this script from a previous page and don't know if all that is needed for a check. Where it is bolded, it used to be !=, but I changed it to = to act if it is not there...is this right, or is there a simpler way?

Oh, and it does work, I just wans't sure if it was completely right.

Thanks!