function showForm(val)
{
	if (val == 2)
	{
		document.getElementById("zone1").style.display = 'none';
		document.getElementById("zone2").style.display = '';
	}
	else
	{
		document.getElementById("zone2").style.display = 'none';
		document.getElementById("zone1").style.display = '';
	}
}

function ajax(val)
{
	var http_request = false;

	if (window.XMLHttpRequest)
	{
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType)
		{
			http_request.overrideMimeType('text/xml');
		}
	}
	else if (window.ActiveXObject)
	{
		try {http_request = new ActiveXObject("Msxml2.XMLHTTP");}
		catch (e) {try {http_request = new ActiveXObject("Microsoft.XMLHTTP");} catch (e) {}}
	}

        if (!http_request)
	{
		alert("Abandon : impossible de cr\351er une instance XMLHTTP");
		return false;
	}

	if (val == 1)
	{
		document.getElementById("progress_img1").style.display = "";
		var city = document.getElementById("nomville1").value;
		var country = document.getElementById("pays").value;
		if (country == "")
		{
			alert("Veuillez d'abord sélectionner un pays.");
			document.getElementById("progress_img1").style.display = "none";
		}
		else if (city == "")
		{
			alert("Veuillez d'abord entrer le nom de la ville.");
			document.getElementById("progress_img1").style.display = "none";
		}
		else
		{
			var url = 'getcity.php?name='+city+'&country='+country;
			http_request.onreadystatechange = function() {getCity(http_request);};
			http_request.open('GET', url, true);
			http_request.send(null);
		}	
	}
	else if (val == 2)
	{
		var codeinsee = document.getElementById("nomville3").value;
		var country = document.getElementById("pays").value;
		var url = 'getdistricts.php?id='+codeinsee+'&country='+country;
		http_request.onreadystatechange = function() {getDistricts(http_request);};
		http_request.open('GET', url, true);
		http_request.send(null);
	}
	else if (val == 3)
	{
		var country = document.getElementById("pays").value;

		var reg = document.getElementById('post').region;
		for (var i = reg.options.length; i > 0;  i--)
		{
			reg.options[i] = null;
		}

		var dep = document.getElementById('post').dep;
		for (var i = dep.options.length; i > 0;  i--)
		{
			dep.options[i] = null;
		}
		dep.disabled = true;

		if (country == "")
		{
			
			document.getElementById("zone0").style.display = "none";
			document.getElementById("zone1").style.display = "none";
			document.getElementById("zone2").style.display = "none";
			document.getElementById("zone2radio").checked = true;
		}
		else
		{
			document.getElementById("zone0").style.display = "";
			document.getElementById("zone1").style.display = "none";
			document.getElementById("zone2").style.display = "";
			document.getElementById("zone2radio").checked = true;

			document.getElementById("ville1").style.display = "";
			document.getElementById("ville2").style.display = "none";
			document.getElementById("ville3").style.display = "none";
			document.getElementById("nomville3").value = "";

			document.getElementById("quartier0").style.display = "";
			document.getElementById("quartier1").style.display = "none";
			document.getElementById("quartier3").style.display = "none";
			document.getElementById("quartier4").style.display = "none";
			document.getElementById("nom_quartier").value = "";

			document.getElementById("progress_img3").style.display = '';

			var url = 'getreg.php?id='+country;
			http_request.onreadystatechange = function() {getReg(http_request);};
			http_request.open('GET', url, true);
			http_request.send(null);
		}
	}
}

function getDistricts(http_request)
{
	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			if (http_request.responseText != "" && http_request.responseText != null)
			{
				var districts = new Array();
				districts = http_request.responseText.split('|');
				var form = document.getElementById("post");

				for (var i = form.quartier1.options.length - 1; i > 0; i--)
				{
					form.quartier1.options[i] = null;
				}

				var nbdistricts = districts.length / 2;

				form.quartier1.options[0] = new Option('---', '0');

				for (var j = 0; j < nbdistricts; j++)
				{
					form.quartier1.options[j+1] = new Option(districts[(j*2)+1], districts[j*2]);
				}

				form.quartier1.selectedIndex = 0;
				document.getElementById("quartier0").style.display = "none";
				document.getElementById("quartier1").style.display = "";
				document.getElementById("quartier2").style.display = "none";
				document.getElementById("quartier4").style.display = "none";
				document.getElementById("spanquartier2").style.display = "";
			}
			else
			{
				document.getElementById("quartier0").style.display = "none";
				document.getElementById("quartier1").style.display = "none";
				document.getElementById("quartier2").style.display = "";
				document.getElementById("quartier4").style.display = "none";
				document.getElementById("spanquartier2").style.display = "none";
			}

		}
		else
		{alert("Un probl\350me est survenu avec la requ\352te.");}
	}
}

function selectDistrict()
{
	var form = document.getElementById("post");

	if (form.quartier1.value == "0") {alert("Veuillez d'abord s\351lectionner un quartier.");}
	else
	{
		form.nom_quartier.value = form.quartier1.value;
		var quartier = document.createTextNode(form.quartier1.options[form.quartier1.selectedIndex].text);
		var el = document.getElementById('spanquartier4');
		if (el.firstChild) el.removeChild(el.firstChild);
		el.appendChild(quartier);
		document.getElementById("quartier1").style.display = "none";
		document.getElementById("quartier4").style.display = "";
	}
}

function changeDistrict()
{
	var form = document.getElementById("post");

	document.getElementById("quartier4").style.display = "none";
	document.getElementById("quartier1").style.display = "";
	form.nom_quartier.value = "";
}

function getCity(http_request)
{
	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			if (http_request.responseText != "" && http_request.responseText != null)
			{
				var cities = new Array();
				cities = http_request.responseText.split('|');
				var form = document.getElementById("post");

				for (var i = form.nomville2.options.length - 1; i > 0; i--)
				{
					form.nomville2.options[i] = null;
				}

				var nbcities = cities.length / 2;

				for (var j = 0; j < nbcities; j++)
				{
					form.nomville2.options[j] = new Option(cities[(j*2)+1], cities[j*2]);
				}

				form.nomville2.selectedIndex = 0;
				document.getElementById("ville1").style.display = "none";
				document.getElementById("ville2").style.display = "";
			}
			else {alert("Aucune ville n'a \351t\351 trouv\351e. Modifiez votre requ\352te.");}
		}
		else
		{alert("Un probl\350me est survenu avec la requ\352te.");}
		document.getElementById("progress_img1").style.display = "none";
	}

}

function changeCity(step)
{
	with (document)
	{
		getElementById("ville"+step).style.display = "none";
		getElementById("ville"+(step-1)).style.display = "";
		getElementById("nomville3").value = "";
		getElementById("quartier0").style.display = "";
		getElementById("quartier1").style.display = "none";
		getElementById("quartier3").style.display = "none";
		getElementById("quartier4").style.display = "none";
		getElementById("nom_quartier").value = "";
	}
}

function selectCity()
{
	var form = document.getElementById("post");
	form.nomville3.value = form.nomville2.value;
	var nomville = document.createTextNode(form.nomville2.options[form.nomville2.selectedIndex].text);
	var el = document.getElementById('spanville3');
	if (el.firstChild) el.removeChild(el.firstChild);
	el.appendChild(nomville);
	document.getElementById("ville2").style.display = "none";
	document.getElementById("ville3").style.display = "";
	ajax(2);
}

function getReg(http_request)
{
	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			var form = document.getElementById("post");
			if (http_request.responseText != "" && http_request.responseText != null)
			{
				var reg = new Array();
				reg = http_request.responseText.split('|');

				var nbreg = reg.length / 2;

				for (var j = 0; j < nbreg; j++)
				{
					form.region.options[j+1] = new Option(reg[(j*2)+1], reg[j*2]);
				}

				form.region.disabled = false;
			}
			else {form.region.disabled = true;}
		}
		else
		{alert("Un probl\350me est survenu avec la requ\352te.");}
		document.getElementById("progress_img3").style.display = 'none';
	}

}

function getDep(val)
{
	var dep = document.getElementById('post').dep;
	for (var i = dep.options.length; i > 0;  i--)
	{
		dep.options[i] = null;
	}

	if (val > 0)
	{
		var http_request = false;

		if (window.XMLHttpRequest)
		{
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType)
			{
				http_request.overrideMimeType('text/xml');
			}
		}
		else if (window.ActiveXObject)
		{
			try {http_request = new ActiveXObject("Msxml2.XMLHTTP");}
			catch (e) {try {http_request = new ActiveXObject("Microsoft.XMLHTTP");} catch (e) {}}
		}

		if (!http_request)
		{
			alert("Abandon : impossible de cr\351er une instance XMLHTTP");
			return false;
		}
		document.getElementById("progress_img2").style.display = '';
		var url = 'getdep.php?id='+val;
		http_request.onreadystatechange = function() {setDep(http_request);};
		http_request.open('GET', url, true);
		http_request.send(null);
	}
	else {dep.disabled = true; document.getElementById("progress_img2").style.display = 'none';}
}

function setDep(http_request)
{
	if (http_request.readyState == 4)
	{
		if (http_request.status == 200)
		{
			var form = document.getElementById("post");
			if (http_request.responseText != "" && http_request.responseText != null)
			{
				var dep = new Array();
				dep = http_request.responseText.split('|');

				var nbdep = dep.length / 2;

				for (var j = 0; j < nbdep; j++)
				{
					form.dep.options[j+1] = new Option(dep[(j*2)+1], dep[j*2]);
				}

				form.dep.disabled = false;
			}
			else {form.dep.disabled = true;}
		}
		else
		{alert("Un probl\350me est survenu avec la requ\352te.");}
		document.getElementById("progress_img2").style.display = 'none';
	}
} 

function selectAll(el)
{
	var el = document.getElementById(el);
	for (var i = 0; i < el.options.length; i++)
	{
		el.options[i].selected = true;
	}
}

function formSubmit()
{
	var form = document.getElementById("post");
	var val = 0;
	for (var i = 0; i < form.zone.length; i++)
	{
		if (form.zone[i].checked == true) val = form.zone[i].value;
	}
	if (val == 1 && form.nomville3.value == '') {alert("Vous devez choisir une ville.");}
	else {form.submit();}

}