var xmlHttp
var queryId

function logout() {
	queryId = "main"
	xmlHttp = GetXmlHttpObject()
	if (xmlHttp == null) {
		alert("Browser does not support HTTP Request")
		return
	}
	var url = "src/funcs/logout.php"
	xmlHttp.onreadystatechange = stateChanged
	xmlHttp.open("GET", url, true)
	xmlHttp.send(null)
}

function showLogin() {
	queryId = "main"
	xmlHttp = GetXmlHttpObject()
	if (xmlHttp == null) {
		alert("Browser does not support HTTP Request")
		return
	}
	var url = "src/funcs/login.php"
	xmlHttp.onreadystatechange = stateChanged
	xmlHttp.open("GET", url, true)
	xmlHttp.send(null)
}

function stateChanged() {
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") {
		document.getElementById(queryId).innerHTML = xmlHttp.responseText
	}
}

function GetXmlHttpObject() {
	var xmlHttp = null;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}