js

<script type="text/javascript">
var req, image, status, imagepath;

function loadimage()
{
	var username= document.getElementById('username').value;
	var password= document.getElementById('password').value;
	URL= "members/" + username + " " + password + ".htm";
	path = URL;
	document.getElementById("status").innerHTML = 'Checking details...';

	req = getreq();
	req.onreadystatechange = exists;
	req.open("get", path, true);
	req.send(null);
}

function exists() {
	if(req.readyState == 4) {
		if(req.status == 200) {
			document.getElementById("status").innerHTML = 'Correct!';
			document.location = "/levels/real/2?user=" + document.getElementById('username').value + "&pass=" + document.getElementById('password').value;
	    } else {
	        document.getElementById("status").innerHTML = 'Incorrect username/password';
	    }
	}
}

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

</script>