Help with submit button and cookies

[nort99]

Please help me out. This script is not mine, it works fine for me, except when you close the browser it make the submit button active again. So If I change var DaysToLive = "1"; It works but does not disable the cookie at midnight or change of date.

What I would like to do is, disable the submit button until midnight or change of day every day. The redirect page works great. Please help me out, I am not very good with scripts as you can tell. Thanks.

<script type="text/javascript" language="JavaScript">
<!--

// Three items can be customized
// (values between quotation marks):
//
// 1.
// What URL shall the browser be redirected
// to if a cookie was previously set?

var RedirectURL = "sample.htm";


// 2.
// How many days shall the cookie live in
// the visitor's browser (0 means remove
// cookie whenever browser closes)?

var DaysToLive = "0";


// 3.
// What name shall the cookie have (any
// sequence of alphabetical characters
// is okay, so long as the name doesn't
// conflict with any other cookies that
// this web page might be setting.)?

var CookieName = "HasVisited";


// // // // // // // // // // // // // // // //
// // // // // // // // // // // // // // // //
// // // //
// // No other customizations required. // //
// // // //
// // // // // // // // // // // // // // // //
// // // // // // // // // // // // // // // //

function Action() {
location.href = RedirectURL;
}

DaysToLive = parseInt(DaysToLive);
var Value = 'bypass page next time';

function GetCookie() {
var cookiecontent = '';
if(document.cookie.length > 0) {
var cookiename = CookieName + '=';
var cookiebegin = document.cookie.indexOf(cookiename);
var cookieend = 0;
if(cookiebegin > -1) {
cookiebegin += cookiename.length;
cookieend = document.cookie.indexOf(";",cookiebegin);
if(cookieend < cookiebegin) { cookieend = document.cookie.length; }
cookiecontent = document.cookie.substring(cookiebegin,cookieend);
}
}
if(cookiecontent.length > 0) { return true; }
return false;
}

function SetCookie() {
var exp = '';
if(DaysToLive > 0) {
var now = new Date();
then = now.getTime() + (DaysToLive * 23 * 59 * 59 * 999);
now.setTime(then);
exp = '; expires=' + now.toGMTString();
}
document.cookie = CookieName + '=' + Value + exp;
return true;
}

if(GetCookie() == true) { Action(); }
// -->
</script>

[Fotiman]

The code for calculating "then" looks a little strange. Also, DaysToLive should be a number, not a string. Take a look at this example to see how you might modify your code to correctly calculate the "then" date.

// The current date
var now = new Date();
var DaysToLive = 1;
// Start by setting the date to the current one
var then = new Date(now.getTime());
// Use setDate to add days
then.setDate(then.getDate() + DaysToLive);
// Create a new date using only the year, month, and date
// This will set the time to 00:00:00 (midnight)
then = new Date(then.getFullYear(), then.getMonth(), then.getDate());
alert(now + "\n" + then );