/********************************
Funzione che sostituisce il SUBMIT, utile al passaggio di tutti i parametri
alla pagina che poi restituirˆ i valori a seconda dei parametri inseriti
esempio utilizzo: <a href="javascript:submit('nomefile.php', 'GET')">link</a>
********************************/
function submit(FILE, METHOD){

	var num = document.forms[0].elements.length;
	var url = "";

	//radio button
	var j = 0;
	var a = 0;
	var radio_buttons = new Array();
	var nome_buttons = new Array();
	var the_form = window.document.forms[0];
	for(var i=0; i<the_form.length; i++){
	var temp = the_form.elements[i].type;
	if ( (temp == "radio") && ( the_form.elements[i].checked) ) {
	nome_buttons[a] = the_form.elements[i].name;
	radio_buttons[j] = the_form.elements[i].value;
	j++;
	a++;
	}
	}
	for(var k = 0; k < radio_buttons.length; k++) {
	url += nome_buttons[k] + "=" + radio_buttons[k] + "&";
	}
	//checkbox
	var j = 0;
	var a = 0;
	var check_buttons = new Array();
	var nome_buttons = new Array();
	var the_form = window.document.forms[0];
	for(var i=0; i<the_form.length; i++){
	var temp = the_form.elements[i].type;
	if ( (temp == "checkbox") && ( the_form.elements[i].checked) ) {
	nome_buttons[a] = the_form.elements[i].name;
	check_buttons[j] = the_form.elements[i].value;
	j++;
	a++;
	}
	}
	for(var k = 0; k < check_buttons.length; k++) {
	url += nome_buttons[k] + "=" + check_buttons[k] + "&";
	}
	for (var i = 0; i < num; i++){
	
	var chiave = document.forms[0].elements[i].name;
	var valore = document.forms[0].elements[i].value;
	var tipo = document.forms[0].elements[i].type;

	if ( (tipo == "submit") || (tipo == "radio") || (tipo == "checkbox") ){}
	else {
	url += chiave + "=" + valore + "&";
	}
	}
	var parameters = url;
	url = FILE + "?" + url;
	if (METHOD == undefined) { METHOD = "GET"; }
	if (METHOD == "GET") { ahah(url, 'target', '', METHOD); }
	else { ahah(FILE, 'target', '', METHOD, parameters); }
}

function ahah(url, target, delay, method, parameters) {

 if (method == undefined) {
	document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	if (window.XMLHttpRequest) {
	req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
	req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (req) {
	req.onreadystatechange = function() {
	ahahDone(url, target, delay, method, parameters);
	};
	req.open("GET", url, true);
	req.send("");
	}
 }
 if ( (method == "GET") || (method == "get") )
 {
	document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	if (window.XMLHttpRequest) {
	req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
	req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (req) {
	req.onreadystatechange = function() {
	ahahDone(url, target, delay, method, parameters);
	};
	req.open(method, url, true);
	req.send("");
	}
 }

 if ( (method == "POST") || (method == "post") )
 {
	document.getElementById(target).innerHTML = 'caricamento dati in corso...';
	if (window.XMLHttpRequest) {
	req = new XMLHttpRequest();
	} else if (window.ActiveXObject) {
	req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (req) {
	req.onreadystatechange = function() {
	ahahDone(url, target, delay, method, parameters);
	};
	req.open(method, url, true);
	req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	req.send(parameters);
	}
 }
}

function ahahDone(url, target, delay, method, parameters) {
 if (req.readyState == 4) {
 if (req.status == 200) {
 document.getElementById(target).innerHTML = req.responseText;
 } else {
 document.getElementById(target).innerHTML="ahah error:\n"+req.statusText;
 }
 }
}