var xmlHttp;

function getXmlHttpObject()
{
        var objXMLHttp=null;
        if (window.XMLHttpRequest)
        {
                objXMLHttp = new XMLHttpRequest();
        }
        else if (window.ActiveXObject)
        {
                objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        return objXMLHttp;
}

function authStateChanged()
{
        if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
        {
                var authResponse = xmlHttp.responseText;
                if (authResponse == 1)
                {
                        window.location = "/myeweka/index.php?p=home";
                }
                else
                {
                        document.getElementById('login_form').innerHTML = "<center>Login incorrect!<br /><br /><a href=\"index.php?p=login\">Probeer opnieuw</a> - <a href=\"index.php?p=login&a=forgot\">Gegevens kwijt?</a></center>";
                }
        }
}

function pchangeStateChanged()
{
        if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
        {
                var abResponse = xmlHttp.responseText;
                document.getElementById('abbo1').innerHTML = 'Welk abbonement heeft u?';
                document.getElementById('abbo2').innerHTML = abResponse;
        }
}

function auth()
{
	var username = document.getElementById('login_user').value;
	var password = document.getElementById('login_pass').value;

	var formHtml = document.getElementById('login_form');

	var url = "/myeweka/auth.php";
	url=url+"?u="+username;
	url=url+"&p="+password;
	formHtml.innerHTML = '<center>Bezig met inloggen...<br /><br /><img src="images/loadingwheel.gif"></center>';

	xmlHttp = getXmlHttpObject();

	xmlHttp.onreadystatechange = authStateChanged;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);

	return false;
}

function imgShow()
{
	var i = document.getElementById('plist').array.selectedIndex;
	var url = document.getElementById('plist').array.options[i].value;
	if (url == "-")
	{
		document.getElementById('imgbox').innerHTML = "";
	}
	else
	{
		document.getElementById('imgbox').innerHTML = "<table style=\"width: 630px; text-align: center;\"><tr><td><img src=\"" + url + "\" /></td></tr></table>\n";
	}
}

function pchange() 
{
	var w = document.getElementById('plist').selectedIndex;
	var value = document.getElementById('plist').options[w].value;

	var url = 'ablist.php';
	url=url+"?id="+value;

	xmlHttp = getXmlHttpObject();

	xmlHttp.onreadystatechange = pchangeStateChanged;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}