var http_request = false;

window.onload = function() {
		var pass = document.getElementById('HMAC_pass')
		var get = function() {
			document.getElementById('ajax_login').innerHTML = "";
		
			var user = document.getElementById('HMAC_user').value;
			var pass = document.getElementById('HMAC_pass').value;
			var key = document.getElementById('HMAC_key').value;
			var hash = document.getElementById('HMAC_hash').value;
			var str = "HMAC_user=" + user + "&HMAC_pass=" + pass + "&HMAC_key=" + key + "&HMAC_hash=" + hash;
			
			makeRequest('/include/ajax.php', str);
		};
		
		pass.onblur = get;
	};

function makeRequest(url, parameters) {
	http_request = false;
	
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			//http_request.overrideMimeType('text/xml');
			http_request.overrideMimeType('text/html');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	
	if (!http_request) {
		alert('Cannot create XMLHTTP instance');
		return false;
	}
	
	http_request.onreadystatechange = alertContents;
	http_request.open('POST', url, true);
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
}

function alertContents() {
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
			//alert(http_request.responseText);
			result = http_request.responseText;
			var span = 'ajax_login';
			document.getElementById(span).innerHTML = document.getElementById(span).innerHTML + result;

			if( result == '<img src="/images/check.png" />') {
				document.getElementById('HMAC_user').disabled = true;
				document.getElementById('HMAC_pass').disabled = true;
				document.getElementById('changeAcc').innerHTML += '<a href="/dailyUser/admin.php">Change your account settings.</a>';
			}
		} else {
			alert('There was a problem with the request.');
		}
	}
}