newJS = document.createElement('script');
newJS.type='text/javascript';
newJS.src='ajax.js';
document.getElementsByTagName('head')[0].appendChild(newJS);

function toggleList(id) {
    if ( document.getElementById(id).style.display == 'block' ) {
        document.getElementById(id).style.display = 'none';
    } else {
        document.getElementById(id).style.display = 'block';
    }
    
}

function login() {
    document.body.style.overflow = 'hidden';
    document.getElementById("fadeback").style.width = '100%';
    document.getElementById("fadeback").style.height = '100%';
    document.getElementById("fadeback").style.display = 'block';
    document.getElementById("loginwindow").style.display = 'block';
}
function closeLogin() {
    document.body.style.overflow = 'auto';
    document.getElementById("fadeback").style.display = 'none';
    document.getElementById("loginwindow").style.display = 'none';
}

function ajaxCheckPW() {
    data = document.getElementById("loginForm").pw.value;
    
    var xhr = createXHR();

    xhr.onreadystatechange=function() { 
        if(xhr.readyState == 4) {
            response = xhr.responseText;
            if ( response == 'error' ) {
                alert('Feil passord');
            } else {
                document.getElementById("loginForm").action = response;
                document.getElementById("loginForm").submit();
            }
        }
    }; 
    xhr.open("POST", "login/login.php", true);        
    xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    xhr.send("data="+data); 
 }