// either fail in registration attempt, or succeed and delete/re-create cookie
function validateContact() {
    if (document.forms[0].user_name.value == "" || document.forms[0].password1.value == "" || document.forms[0].passwordrepeat.value == "")
    document.getElementById('fields_required').innerHTML = 'You must fill out all fields.';
//    else if (!document.forms[0].user_name.value.match(/^([a-zA-Z0-9])/) || !document.forms[0].password1.value.match(/^([a-zA-Z0-9])/) || !document.forms[0].passwordrepeat.value.match(/^([a-zA-Z0-9])/))
//    document.getElementById('email_required').innerHTML = 'Please only use numbers and alphabetic characters, with no spaces or punctuation.';
    else {
//        document.cookie.counter = 1;
        document.cookie = "username=" + encodeURIComponent(document.forms[0].user_name.value) + ";expires=Sun, 2 May 2010 00:00:00 UTC; path=/";
        document.cookie = "password=" + encodeURIComponent(document.forms[0].password1.value) + ";expires=Sun, 2 May 2010 00:00:00 UTC; path=/";

        document.forms[0].reset();
//        document.getElementById('success').innerHTML = 'Thank you for registering!';
}
}

function validateLogin() {
    if (document.forms[1].user_name.value = "" || document.forms[1].password.value == "")
    document.getElementById('fields_required').innerHTML = 'You must fill out all fields.';
}

function cookieExists(name) {
    var cookiearray = document.cookie.split(';');
    if (cookiearray[0] == '') {
        //window.alert("cookieExists false 1")
        return false;
    }
    for (var i in cookiearray) {
        var cookiepair = cookiearray[i].split('=');
        if (cookiepair[0] == name) {
            //window.alert("cookieExists true")
            return true;
        }
    }
    //window.alert("cookieExists false 2")
    return false;
}

function setCookie() {
    var counter;
    if (document.cookie.length == 0) {
        // if cookie has not been created, create one
        document.cookie = 'counter=0;expires=Sun, 1 May 2011 00:00:00 UTC; path=/';
        window.alert("created a cookie.");
    }
    else {
        if (!cookieExists('username')) {
            // if they have not registered
            var cookiearray = document.cookie.split(';');
            alert("got to two");
            for (var i in cookiearray) {
                var cookiepair = cookiearray[i].split('=');
                if (cookiepair[0] == "counter") {
                    // if this cookie entry is the counter
                    counter = ++cookiepair[1];
                    window.alert("The counter has reached " + cookiepair[1]);
                    document.cookie = 'counter=' + counter + ';expires=Sun, 1 May 2011 00:00:00 UTC; path=/';
                    if (cookiepair[1] % 5 == 0) {
                        // if counter is a multiple of five
                        window.alert("Please register!");
                        // nag
                    }
                }
                else
                alert("got to four" + cookiepair[0]);
            }
            alert("got to three");
        }
        else {
            // if they have registered\
            var cookiearray = document.cookie.split(';');
            var username;
            var password;
            for (var i in cookiearray) {
                var cookiepair = cookiearray[i].split('=');
                if (cookiepair[0] == "username") {
                    username == cookiepair[1];
                }
                else if (cookiepair[0] == "password") {
                    password == cookiepair[1];
                }
            }
            window.alert("Your username is " + username + ". Your password is " + password);
        }
    }
}