function st_send(e)
{
    if(ajax)
    {     
        xStopPropagation(e);
        xPreventDefault(e);
        var elem;
        var elem2 = document.getElementById("submit_btn");
        var phid=document.getElementById("hidden");
        elem = document.getElementById("txt_uname");
        elem2.style.visibility = 'hidden';        
        phid.innerHTML="In elaborazione";
        function load_details(){
			if (ajax.readyState < 4) return;
			if (ajax.status != 200) {
					alert("Error while connecting to the server:\n" 
					+ ajax.status + " " + ajax.statusText);
			}
			if(ajax.responseText == "Banned" ||ajax.responseText == "Error")
			{
			    alert("Nome utente errato " + ajax.responseText);
			    window.location.reload();
			}
			else 
			    nd_send(ajax.responseText);
		}
		var param = "uname=" + escape(elem.value);
        var page = domain + "asp/getp.asp";
        ajax.abort();
        ajax.open("post",encodeURI(page),true);
        ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
        ajax.setRequestHeader('Connection', 'close');   
        ajax.onreadystatechange = load_details;
        ajax.send(param);    
    }
}
function nd_send(text_ts)
{
    if(ajax)
    {   
        var elem2 = document.getElementById("txt_psw");
                
        function load_details2(){
			if (ajax.readyState < 4) return;
			if (ajax.status != 200) {
					alert("Error while connecting to the server:\n" 
					+ ajax.status + " " + ajax.statusText);
			}
			if(ajax.responseText == "Wrong")
			{
			    alert("Password sbagliata");
			    window.location.reload();
			}
			else
			    activate(ajax.responseText);
		}
        var param = "chksum=" + text_ts + "&psw=" + elem2.value;
        var page = domain + "asp/chkpsw.php";
        ajax.abort();
        ajax.open("post",encodeURI(page),true);
        ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
        ajax.setRequestHeader('Connection', 'close');   
        ajax.onreadystatechange = load_details2;
        ajax.send(param);    
    }
}

function activate(ttt)
{
    var elem;     
    elem = document.getElementById("txt_uname");
    function load_details(){
		if (ajax.readyState < 4) return;
		if (ajax.status != 200) {
				alert("Error while connecting to the server:\n" 
				+ ajax.status + " " + ajax.statusText);
		}
		window.location.reload();
	}
	var param = "uname=" + escape(elem.value) + "&passwd=" + ttt;
    var page = domain + "asp/check.asp";
    ajax.abort();
    ajax.open("post",encodeURI(page),true);
    ajax.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    ajax.setRequestHeader('Connection', 'close');   
    ajax.onreadystatechange = load_details;
    ajax.send(param);
}

function set_event()
{
    xAddEventListener(document.getElementById("submit_btn"),'click',st_send,false);
}

var ajax = createXMLHttpRequest();
var domain = "http://www.ypsilonclub.it/";