var registerPage = "/ajax/registerUser.php";
var loginPage = "/ajax/loginUser.php";
var logoutPage = "/ajax/logoutUser.php";
var deletePage = "/ajax/deleteUserHistory.php";

function loadPage(url)
{
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.send(null);
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChange;
            req.open("GET", url, true);
            req.send();
        }
    }
}

function processReqChange() 
{
	 if (req.readyState == 4) {
		response  = req.responseText;
		document.getElementById("customSearch").innerHTML = response;
    }
	else
	{
		document.getElementById("customSearch").innerHTML="<div style='width: 500px; text-align:center; height:35px;'><img src='../images/article_loading.gif' height='35' width='35' /></div>";
	}
}

function registerUser(uname,pwd) {
	var url = registerPage + '?uname='+uname+'&pwd='+pwd;
	loadPage(url);
}

function loginUser(uname,pwd) {
	var url = loginPage + '?uname='+uname+'&pwd='+pwd;
	loadPage(url);
}

function logoutUser() {
	var url = logoutPage;
	loadPage(url);
}

function deleteUserHistory(id) {
	var url = deletePage + '?id='+id;
	loadPage(url);
}