function submitFrm(){ 
	document.getElementById('form_login').submit();
} 

var http_request = false;
function makeRequest(url, handler) 
{
  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 = handler;
  http_request.open('GET', url, true);
  http_request.send(null);
}

function stampaListaCategorie()
{ 
	if (http_request.readyState == 4) 
	{ // Complete
		if (http_request.status == 200) 
		{ // OK response
			var dcat = window.document.getElementById("menu-listaCategorie");
			if(dcat) dcat.innerHTML = http_request.responseText;
			var dzone = window.document.getElementById("menu-listaZone");
			if(dzone) dzone.innerHTML = ""; 
		} 
		else 
		{
			alert("Problem: " + http_request.statusText);
		}
	}
}

function stampaListaZone()
{ 
	if (http_request.readyState == 4) 
	{ // Complete
		if (http_request.status == 200) 
		{ // OK response
			var dzone = window.document.getElementById("menu-listaZone");
			if(dzone) dzone.innerHTML= http_request.responseText; 
			var dcat = window.document.getElementById("menu-listaCategorie");
			if(dcat) dcat.innerHTML=""; 
		} 
		else 
		{
			alert("Problem: " + http_request.statusText);
		}
	}
} 

function getListaCategorie()
{
	makeRequest("getListaCategorie.php",stampaListaCategorie);
}

function getListaZone()
{
	makeRequest("getListaZone.php",stampaListaZone);
}