var ammendged = false;
var allOK = true;
var msg = '';

function addNewsLetter() {
    allOK = true;
    msg = 'Please correct the following errors.\n Fields with errors are highlighted in red\n\n';

    var email = ele('email').value;
    var freq = ele('freq').value;

    if (email == null || email == '' || email == 'Enter your Email')
        ammend('email', 'Please enter an Email address.');

    if (!emailValidate(ele('email').value))
        ammend('email', 'Invalid email address');

    if (allOK == true) {
        loadJSON('http://www.binbin.net/AddToDB.aspx?ty=newsletter&email=' + email + '&freq=' + freq);
        unblock();
    }
    else
        alert(msg);    

    return false;
}

function loadJSON(url) {
    var headID = document.getElementsByTagName("head")[0];
    var newScript = document.createElement('script');
    newScript.type = 'text/javascript';
    newScript.src = url;
    headID.appendChild(newScript);
}

function ele(e) { return document.getElementById(e); }

function ammend(name, error) {
    allOK = false;
    ele(name).style.backgroundColor = '#FF0000';
    try {
        ele(name).focus();
    }
    catch (x) { }

    msg += error + '\n';
}

function NewsLetterClearAll() {
    ele('email').value = '';

    alert('Thank You.\n\n for signing up to our newsletter.');
}

function emailValidate(emailStr) {
    var checkTLD = 1;
    var knownDomsPat = /^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/i;
    var emailPat = /^(.+)@(.+)$/;
    var specialChars = "\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
    var validChars = "\[^\\s" + specialChars + "\]";
    var quotedUser = "(\"[^\"]*\")";
    var ipDomainPat = /^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
    var atom = validChars + '+';
    var word = "(" + atom + "|" + quotedUser + ")";
    var userPat = new RegExp("^" + word + "(\\." + word + ")*$");
    var domainPat = new RegExp("^" + atom + "(\\." + atom + ")*$");
    var matchArray = emailStr.match(emailPat);
    if (matchArray == null)
        return false;
    var user = matchArray[1];
    var domain = matchArray[2];
    for (i = 0; i < user.length; i++) {
        if (user.charCodeAt(i) > 127)
            return false;
    }
    for (i = 0; i < domain.length; i++) {
        if (domain.charCodeAt(i) > 127)
            return false;
    }
    if (user.match(userPat) == null)
        return false;
    var IPArray = domain.match(ipDomainPat);
    if (IPArray != null) {
        for (var i = 1; i <= 4; i++) {
            if (IPArray[i] > 255)
                return false;
        }
        return true;
    }
    var atomPat = new RegExp("^" + atom + "$");
    var domArr = domain.split(".");
    var len = domArr.length;
    for (i = 0; i < len; i++) {
        if (domArr[i].search(atomPat) == -1)
            return false;
    }

    if (checkTLD && domArr[domArr.length - 1].length != 2 && domArr[domArr.length - 1].search(knownDomsPat) == -1)
        return false;

    if (len < 2)
        return false;
    return true;
}

function unblock() {
    for (var i = 0; i < window.top.document.getElementsByTagName('SELECT').length; i++)
        window.top.document.getElementsByTagName('SELECT')[i].style.backgroundColor = "#ffffff";
    for (var i = 0; i < window.top.document.getElementsByTagName('INPUT').length; i++)
        if (window.top.document.getElementsByTagName('INPUT')[i].id != 'btnNext' && window.top.document.getElementsByTagName('INPUT')[i].id != 'pcaButtonTE35')
        window.top.document.getElementsByTagName('INPUT')[i].style.backgroundColor = "#ffffff";

    if (navigator.appVersion.indexOf('MSIE 6') > -1)
        for (var i = 0; i < window.top.document.getElementsByTagName('SELECT').length; i++) {
        try {
            var old = window.top.ge('txt' + window.top.document.getElementsByTagName('SELECT')[i].id);
            old.id = '';
            old.style.display = 'none';
            window.top.document.getElementsByTagName('SELECT')[i].style.display = 'inline';
        }
        catch (x) { x = x; }
    }
}