var xmlhttp;

function getXHO() {
    if (window.XMLHttpRequest) {
        return new XMLHttpRequest();
    }
    if (window.ActiveXObject) {
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    return null;
}

function updateText(url, div) {
    xmlhttp = getXHO();
    xmlhttp.onreadystatechange = function () {
        document.getElementById(div).innerHTML = xmlhttp.responseText;
    }
    xmlhttp.open("GET", url, false);
    xmlhttp.send();
}

function change(x) {
    var e = x.split("#");
    var a = e[1];
    v = "textfiles/" + a + ".php";
    updateText(v, 'content');
}

function showInfo(person) {
    xmlhttp = getXHO();
    xmlhttp.onreadystatechange = function () {
        document.getElementById('a').innerHTML = xmlhttp.responseText;
    }
    xmlhttp.open("GET", 'textfiles/bios/get.php?person=' + person, false);
    xmlhttp.send();
}

function updateQt(qt, p) {
    xmlhttp = getXHO();
    xmlhttp.onreadystatechange = function () {
        if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) {
            var x = xmlhttp.responseText;
            var e = x.split('%');
            document.getElementById('p').innerHTML = '$' + e[1];
            document.getElementById('t').innerHTML = '$' + e[0];
        }
    }
    xmlhttp.open("GET", '/shop/update.php?qt=' + qt + '&p=' + p, false);
    xmlhttp.send();
}

function validate(theField, name, filter) {
    if (theField.value == "") {
        theField.style.background = '#FFFFFF';
        return false;
    }
    if (filter.test(theField.value)) {
        theField.style.background = '#D6FFD8';
    } else {
        theField.style.background = '#FFD6D6';
        alert('Invalid input in ' + name);
    }
}

function validateUsername(theField, name, filter) {
    if (filter.test(theField.value)) {
        var e = document.getElementById('email').value.split('@');
        var a = e[0];
        if (theField.value == a) {
            theField.style.background = '#FFD6D6';
            alert('Username can\'t be the same as email address');
        } else {
            theField.style.background = '#D6FFD8';
        }
    } else {
        theField.style.background = '#FFD6D6';
        alert('Invalid input in ' + name);
    }
}

function pass(theField) {
    var p = document.getElementById('password');
    if (theField.value != p.value) {
        theField.style.background = '#FFD6D6';
        p.style.background = '#FFD6D6';
        alert('Passwords don\'t match!');
    } else {
        theField.style.background = '#D6FFD8';
        p.style.background = '#D6FFD8';
    }
}