r = getXMLHttpRequest();  
var id;

function getXMLHttpRequest()
{
	var request = false;
	try {
		request = new XMLHttpRequest();
	} catch(err1) {
		try {
			request = new ActiveXObject('Msxml2.XMLHTTP');
		} catch(err2) {
			try {
				request = new ActiveXObject('Microsoft.XMLHTTP');                
			} catch(err3) {
				request = false;
			}
		}
	}
	return request;
}   


function processResponse(){
	if (r.readyState == 4) {
		if (r.status == 200) {
			document.getElementById(id).innerHTML = r.responseText;
		};
	};
}

function getData(dane){
	var argument = "gal_kat_p2" + '=';
	argument += encodeURIComponent(dane);
	return argument;	
}

function wybierz(tag){
	var x = getData(document.getElementById('gal_kat_p2').value);
	id = tag;
	plik = "SelektorKategorii.php" + "?data=" + Number(new Date);
	r.open('POST', plik, true);
	r.onreadystatechange = processResponse;
	r.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	r.onreadystatechange = processResponse;
	r.send(x);
}

function load(){
	if(document.getElementById('gal_kat_p2') != null){
		document.getElementById('gal_kat_p2').selectedIndex = 0;
	}
}

function Wyslij(){
try{
var x = document.getElementById('gal_kat_p2').selectedIndex;
document.SELECTY.gal_kat_p2_nazwa.value = document.getElementById('gal_kat_p2').options[x].text;
x = document.getElementById('gal_kat_p3').selectedIndex;
document.SELECTY.gal_kat_p3_nazwa.value = document.getElementById('gal_kat_p3').options[x].text;
}catch(er){
alert("Blad wyslij");
}
}